Calculating Winter Feed Stores for Honey Bee Colonies

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

Northern climate honey bee colonies require 60-90 pounds (27-41 kg) of stored food (honey and pollen) for overwintering, while milder southern climates need 30-50 pounds (14-23 kg), contingent on cluster size and winter duration.
Accurate assessment of existing stores is critical; weighing hives in late summer/early fall using a scale and subtracting equipment weight provides a total, while frame-by-frame inspection reveals store distribution within the brood nest.
Heavy syrup (2:1 sugar to water by weight) should be fed in late summer/early fall to allow bees sufficient warm days to ripen and cap stores, ceasing syrup feeding when nighttime temperatures consistently drop below 50°F (10°C).
Dry sugar or fondant are appropriate late-season or midwinter food sources as they require no water evaporation, mitigating fermentation risk in cold conditions.
Combining weak colonies in early fall is a more effective strategy than attempting to overwinter multiple small units, as larger clusters exhibit superior thermoregulation and resource utilization.
Midwinter checks on mild days are essential to verify remaining stores, as colonies can deplete reserves rapidly due to late-season brood rearing, even if ample food was present in autumn.

Every beekeeper faces the same late summer question: how much honey and syrup do my colonies need to survive until spring? The answer depends on your climate, colony strength, and the length of your dearth period. This guide explains how to calculate winter feed for bees, how to assess what your colonies already have, and how to provide supplemental sugar syrup or dry sugar when natural stores fall short. It is written for small-scale beekeepers, sideliners, and commercial operations that want a repeatable system for winter preparation rather than guesswork.

At a Glance

A typical northern climate colony needs 60 to 90 pounds (27 to 41 kg) of stored food to overwinter. Southern mild-winter colonies may need only 30 to 50 pounds (14 to 23 kg).
Weigh your hives in late summer or early fall to know exactly what you have. A hive tool, scale, and record sheet are the only tools required.
Feed heavy syrup (2 parts sugar to 1 part water by weight) in late summer and early fall. Switch to dry sugar or fondant only after cold weather stops syrup feeding.
Stop feeding syrup when nighttime temperatures regularly fall below 50°F (10°C) or when the bees stop taking it down.
Do not harvest honey from a colony that lacks adequate stores. Leave at least 60 pounds for northern colonies and adjust for your region.
Combine weak colonies in early fall rather than trying to overwinter many small units.
Check stores again in midwinter on a mild day. A colony can starve in February even if it had plenty in October.
Record your feeding dates, weights, and colony conditions every year. Your own records are the best guide for next season.

Why Winter Feeding Matters

Honey bee colonies do not hibernate. They cluster inside the hive and shiver their flight muscles to generate heat. The cluster maintains a core temperature around 95°F (35°C) even when outside temperatures drop far below freezing. That heat production requires energy, and the only energy source available is the stored honey and pollen in the comb. A colony that runs out of food in January or February will starve even if the bees are healthy and the queen is laying well.

The problem is that many beekeepers underestimate how much food a cluster actually consumes. A strong colony with a large cluster burns through stores faster than a small one because more bees need feeding. A colony in a windy exposed yard uses more energy than one in a sheltered spot. A colony that enters winter with a late-season brood rear cycle will consume stores faster because brood rearing requires protein and carbohydrates. All of these factors make a single universal number unreliable, which is why weighing hives and understanding your local conditions matters more than following a generic rule.

Another reason winter feeding matters is that the quality of the food affects bee health. Honey that contains a high proportion of honeydew or dark plant sugars can cause dysentery in bees that are confined for long periods. Bees cannot leave the hive to eliminate waste during cold spells, and poor-quality stores can lead to fecal buildup inside the hive. This creates unsanitary conditions and can spread disease. Feeding your bees clean sugar syrup in the fall gives them a reliable, clean food source that reduces these risks.

The timing of feeding also affects how the bees store the food. Bees ripen sugar syrup by evaporating water and adding enzymes, just as they do with nectar. If you feed too late in the season, the bees may not have enough warm days to cure the syrup properly. Syrup that is stored with high moisture content can ferment in the comb, which spoils the food and can make bees sick. Feeding early enough gives the colony time to process and cap the syrup properly.

Understanding Colony Food Requirements

Cluster Size and Consumption

The size of the winter cluster is the single largest factor in how much food a colony needs. A cluster of 15,000 bees consumes less than a cluster of 30,000 bees, but a larger cluster also has a better chance of surviving the winter because it can maintain temperature more efficiently. Beekeepers sometimes make the mistake of thinking that a small cluster is cheaper to feed and therefore better. In practice, a small cluster often fails to reach the center of the brood nest in late winter, and the queen may not have enough workers to raise the first spring brood successfully.

A general rule is that a colony needs about 60 to 90 pounds of honey for a northern winter that lasts five months or more. This assumes a cluster of roughly 20,000 to 30,000 bees entering winter. A colony with a smaller cluster may survive on less food, but it is also more likely to die from other causes, so the savings are not worth the risk.

For milder climates where the dearth period is shorter, 40 to 60 pounds may be sufficient. Beekeepers in Florida, the Gulf Coast, and the desert Southwest can often overwinter on less because the bees have more flight days and the cluster breaks sooner. The key is to know your own region. Local beekeeping associations and your state apiarist can tell you the typical winter length and the average consumption rates for your area.

Brood Rearing in Late Winter

The queen typically begins laying eggs in late January or February, even in cold climates. This early brood rearing requires the colony to maintain the brood nest at 93°F to 95°F, which is actually warmer than the cluster temperature when no brood is present. The colony must also feed the larvae, which consumes protein from pollen stores and carbohydrates from honey. This late-winter brood rearing is when many colonies run out of food. The bees may have had plenty in November, but the demands of raising the first generation of spring bees can exhaust the stores by March.

This is why experienced beekeepers check stores in midwinter rather than assuming the fall assessment was correct. A colony that had 70 pounds in October may have only 20 pounds left in February, and if the queen has started laying heavily, that 20 pounds may disappear quickly.

The Pollen Factor

Pollen is not usually considered part of winter feed calculations, but it is essential for brood rearing. A colony that enters winter with ample honey but no pollen will struggle to raise spring brood. The bees will consume their protein reserves, and the queen may stop laying or the larvae may be undernourished. When you assess winter stores, check for pollen frames as well as honey frames. A colony should have at least four to six frames with pollen stores in a standard deep box, ideally positioned near the brood nest.

If a colony lacks pollen in the fall, you can feed pollen substitute patties, but the bees must be able to consume them before cold weather confines them to the cluster. Pollen patties are most useful in late winter and early spring when natural pollen is not yet available. For fall preparation, the priority is ensuring the colony has adequate honey and syrup stores, with pollen as a secondary consideration.

How to Assess Current Stores

The Weight Method

The most reliable way to know what a colony has stored is to weigh the hive. A standard deep box with frames and bees weighs about 40 to 50 pounds when empty of honey. A full deep frame of honey weighs about 6 to 7 pounds. A hive body with 10 frames of honey and bees weighs roughly 100 to 120 pounds. By weighing your hive and subtracting the known weight of the equipment, you can calculate the amount of stored honey.

To weigh a hive, you need a reliable scale. A luggage scale with a strap can work for lifting individual boxes, or you can use a platform scale designed for hive weighing. Some beekeepers use a simple bathroom scale and lift one side of the hive at a time, then add the two readings. This method is less accurate but can give you a rough estimate.

The process is straightforward. Weigh the entire hive, then subtract the known weight of the boxes, frames, and bottom board. If you do not know the empty weight of your equipment, weigh it when the hive is empty or estimate using standard weights. A standard Langstroth deep box weighs about 25 pounds empty with frames. A medium box weighs about 15 to 20 pounds. The bottom board, lid, and inner cover add another 10 to 15 pounds.

The weight method gives you a total figure, but it does not tell you where the stores are located. A colony may have 70 pounds of honey in the supers above the brood nest but very little in the brood box itself. In this case, the colony may starve in late winter because the cluster cannot move up through cold empty frames to reach the honey. When you assess stores, you need to know both the total weight and the distribution.

The Frame-by-Frame Method

The frame-by-frame method gives you a clearer picture of store distribution. On a warm day in late summer or early fall, open the hive and inspect each frame. Estimate how much of each frame is covered with capped honey. A fully capped deep frame holds about 6 to 7 pounds of honey. A frame that is half capped holds about 3 pounds. A frame with mostly open nectar holds less because the nectar has not been ripened.

This method is more time-consuming than weighing, but it tells you whether the brood nest has adequate stores around and above it. The ideal winter arrangement is a brood nest with honey frames on either side and above. The cluster moves upward through the box as it consumes stores, so the honey should be positioned above and beside the brood area.

To use this method, create a simple record sheet with columns for each frame position. Note whether each frame is mostly honey, mostly brood, mostly pollen, or a combination. Add up the estimated honey weights to get a total. This gives you a store assessment that accounts for distribution.

Combining Both Methods

The best approach is to use both methods. Weigh the hive for a quick total, then do a frame-by-frame inspection to check distribution. If the total weight is adequate but the stores are all in the supers, you may need to move frames down into the brood box or remove the supers and feed the colony to build stores in the correct location.

For commercial operations with many hives, weighing every hive may not be practical. Many commercial beekeepers use a sample approach, weighing a representative number of hives in each yard and using those figures to estimate the condition of the rest. They also rely on experience and hefting, which is lifting the back of the hive to estimate weight. Hefting is less accurate but can be learned with practice. A hive that feels heavy when you lift the back has adequate stores. A hive that feels light needs attention.

How Much Honey to Leave Bees

Regional Guidelines

The amount of honey you should leave on your hives depends on your winter length and severity. The following figures are general guidelines, not absolute rules. Adjust them based on your local conditions and your own experience.

For northern regions with five to six months of winter, leave 70 to 90 pounds of honey per colony. This includes the honey in the brood box and any that remains in the supers. If you harvested honey in the summer, you must account for what was removed and feed syrup to replace it if the colony does not have enough natural stores.

For intermediate regions with three to four months of winter, leave 50 to 70 pounds. This covers most of the Mid-Atlantic, the Midwest, and the Pacific Northwest.

For southern and mild-winter regions, leave 30 to 50 pounds. Colonies in these areas may have flight days throughout the winter, and the cluster breaks more often. They still need stores, but they do not need the same reserves as northern colonies.

These figures assume a healthy colony with a reasonable cluster size. A weak colony with a small cluster may not need as much food, but it is also less likely to survive regardless of food availability. If you have a weak colony, the better strategy is to combine it with a stronger colony in the fall rather than trying to overwinter it alone.

Forage Availability and Dearth Periods

The amount of natural forage available in your area affects how much you need to feed. A colony in an area with late-summer nectar flows may build its own stores without supplemental feeding. A colony in an area with a summer dearth that extends into fall will need more help.

Learn the nectar calendar for your region. Know when the major nectar flows occur and when they stop. In many areas, the main flow ends in July, and the bees spend August and September gathering what they can from goldenrod, asters, and other late-blooming plants. If your area lacks these late-season plants, your bees will need more supplemental feeding.

The condition of your colonies in late summer also matters. A colony that built up strongly during the spring flow and has ample stores may not need feeding at all. A colony that was recently split or that swarmed may have little stored honey and will need significant feeding to reach winter weight.

The Cost of Harvesting Too Much

Many beekeepers, especially those new to the craft, harvest too much honey in the summer and then find their colonies starving in the fall. The honey you harvest is the same honey your bees need for winter. Every pound you remove must be replaced with syrup or left on the hive.

A good rule is to never take the last full super of honey from a colony unless you are certain the colony has adequate stores in the brood box. Before you harvest, assess the brood box stores. If the brood box is not well provisioned, leave the honey supers on or feed syrup to compensate.

If you do harvest heavily, begin feeding syrup immediately after removing the supers. Do not wait until the weather turns cold. The bees need warm days to process the syrup and store it properly. Feeding in August or early September gives them time to ripen and cap the syrup before winter.

Feeding Sugar Syrup for Winter Bees

When to Start Feeding

The ideal time to start feeding winter syrup is late summer, typically four to six weeks before your first hard frost. This timing gives the bees enough warm days to take down the syrup, ripen it, and store it in the comb. In most northern regions, this means feeding from mid-August through mid-September. In southern regions, feeding can start later, often in September or October.

Starting too early is rarely a problem, but starting too late can be. If you feed syrup when nighttime temperatures are consistently below 50°F (10°C), the bees may not take it down, or they may store it without properly ripening it. The syrup can ferment in the comb, creating a food source that is unhealthy for the bees.

Watch the weather forecast when you plan your feeding schedule. A stretch of warm days in September is ideal for feeding. If you miss that window, you may need to switch to dry sugar or fondant, which the bees can consume without the need to evaporate water.

Syrup Ratios and Preparation

For winter feeding, use a heavy syrup made from 2 parts sugar to 1 part water by weight. This ratio produces a syrup that is approximately 66% sugar, which is close to the concentration of ripened honey. The bees do not need to evaporate as much water from heavy syrup, so they can store it more quickly.

To make heavy syrup, measure the sugar and water by weight. For example, mix 10 pounds of sugar with 5 pounds of water. Heat the water to near boiling, then stir in the sugar until it dissolves completely. Do not boil the syrup after adding the sugar, as this can cause caramelization, which is harmful to bees. Let the syrup cool to room temperature before feeding.

White cane sugar is the standard choice for bee feeding. Do not use brown sugar, molasses, honey from unknown sources, or sugar substitutes. Brown sugar and molasses contain impurities that can cause dysentery in bees. Honey from unknown sources can introduce diseases to your apiary. Sugar substitutes may not provide the nutrition bees need.

Feeding Methods

The most common feeding method is the entrance feeder, which is a jar or pail placed at the hive entrance. Entrance feeders are easy to use and allow you to check and refill without opening the hive. However, they can attract robbers, especially in the fall when other colonies are looking for food. If you use entrance feeders, monitor them closely and remove them when the bees stop taking the syrup.

Hive-top feeders are another option. These are shallow trays that sit on top of the brood box, under the outer cover. They hold a larger volume of syrup and are less likely to attract robbers because the syrup is inside the hive. Hive-top feeders can be messy, and bees can drown in them if the syrup is too deep or if there is no floating material for the bees to cling to. Use a feeder with a built-in float or add twigs or straw to provide landing areas.

Frame feeders are internal feeders that replace one or two frames in the brood box. They hold a gallon or more of syrup and are protected from robbers because they are inside the hive. Frame feeders are effective but require opening the hive to refill, which can be disruptive in cool weather.

For large operations, division board feeders or pail feeders with small holes in the lid are common. Pail feeders are placed upside down over the inner cover hole, and the bees access the syrup through the holes. These are simple and effective, but they can be messy if the syrup leaks.

How Much Syrup to Feed

The amount of syrup you need to feed depends on how much honey the colony already has and how much it needs for winter. To calculate this, subtract the current stores from the target weight. For example, if a northern colony needs 80 pounds of honey and currently has 40 pounds, you need to provide 40 pounds of food. Since syrup is about 66% sugar, you would need to feed approximately 60 pounds of heavy syrup to produce 40 pounds of stored honey. The bees need to evaporate the water from the syrup, so the weight of syrup fed is always greater than the weight of honey stored.

This calculation assumes the bees will take down and process all the syrup you provide. In practice, some syrup may be lost to spillage or not taken down if the weather turns cold. Feed a little extra to account for these losses.

A strong colony can take down a gallon or more of heavy syrup per day in good weather. A gallon of heavy syrup weighs about 10.5 pounds and contains about 7 pounds of sugar. If you need to provide 40 pounds of stored honey, you would need to feed roughly 6 gallons of heavy syrup. This is a substantial amount, and it may take a week or more of good weather for the bees to process it all.

Monitoring Syrup Uptake

Check your feeders regularly during the feeding period. A colony that is taking syrup well will empty a feeder in a few days. A colony that is not taking syrup may be weak, may have plenty of natural forage, or may be affected by robbing pressure. Investigate any colony that is not taking syrup to determine the cause.

If you are feeding multiple colonies, keep records of how much syrup each colony receives. This data will help you identify which colonies are strong feeders and which need extra attention. It will also help you plan future feeding programs.

Dry Sugar and Fondant for Late Feeding

When to Switch from Syrup to Dry Sugar

Once nighttime temperatures regularly fall below 50°F (10°C), stop feeding syrup. The bees will not take it down reliably, and the syrup can ferment in the feeder or in the comb. At this point, switch to dry sugar or fondant, which the bees can consume without needing to evaporate water.

Dry sugar feeding is simple. Place granulated sugar directly on the inner cover or on a piece of newspaper placed over the top bars of the brood box. The bees will take the sugar as needed, mixing it with moisture from the hive to create a food source. This method works best when the colony has some moisture in the hive, which is normal during winter.

Fondant is a better option for late feeding because it is easier for the bees to consume. Fondant is a stiff sugar paste that can be placed directly over the cluster. The bees access it through the inner cover hole or through slits cut in the fondant. Fondant is available from beekeeping suppliers, or you can make it at home using sugar, water, and cream of tartar.

How to Make Fondant

To make fondant, combine 5 pounds of sugar, 1 cup of water, and 1 teaspoon of cream of tartar in a large pot. Heat the mixture slowly, stirring constantly, until the sugar dissolves and the mixture reaches about 240°F (115°C). Do not let it boil over. Pour the mixture into a shallow pan lined with wax paper and let it cool. Once it is firm, cut it into blocks that fit over the inner cover hole.

Fondant can also be made without cooking by mixing powdered sugar with a small amount of water or corn syrup until it forms a stiff dough. This no-cook fondant is easier to make but does not store as well as cooked fondant. Use it within a few weeks of making it.

Placing Dry Sugar and Fondant

Place dry sugar or fondant directly above the cluster, on the top bars of the brood box. The heat and moisture from the cluster will soften the sugar, making it accessible to the bees. If you use an inner cover, place the sugar or fondant in a shallow container or on a piece of newspaper, then replace the inner cover and outer cover.

Do not place dry sugar or fondant on top of an empty super unless that super is directly above the cluster. The bees need to be able to reach the food without traveling through cold empty space. In very cold weather, the cluster may not move upward to access food that is too far away.

Check the sugar or fondant periodically during the winter, on mild days when you can open the hive briefly. Replace it if it has been consumed or if it has become hard and dry. A colony may need several pounds of dry sugar or fondant over the course of a long winter.

Common Mistakes in Winter Feeding

Feeding Too Late

The most common mistake is starting feeding too late in the season. Beekeepers often wait until they see a problem, such as a light hive in October, and then try to feed syrup when the weather has already turned cold. The bees cannot process the syrup, and the colony enters winter underweight.

Start your winter feeding program in late summer, before the weather turns. Assess your colonies in August, feed syrup through September, and switch to dry sugar or fondant in October. This schedule gives your bees the best chance to build adequate stores.

Overfeeding and Creating Robbing Pressure

Feeding syrup in the fall can trigger robbing, especially if you use entrance feeders or if you spill syrup outside the hive. Robbing is a serious problem because it can weaken colonies, spread disease, and lead to fighting and death.

To reduce robbing pressure, use hive-top feeders or frame feeders instead of entrance feeders. Feed only in the evening, when foraging activity has stopped. Do not spill syrup on the outside of the hive. If robbing starts, close the entrance to a small opening and remove the feeder temporarily.

Ignoring Store Distribution

A colony can have plenty of total stores but still starve if the stores are not positioned where the cluster can reach them. Honey in the supers above a queen excluder is inaccessible to the cluster in cold weather. Honey on the outer edges of the brood box may be too far from the cluster for the bees to reach during extreme cold.

When you assess stores, pay attention to distribution. The brood box should have a solid band of honey frames above and beside the brood nest. If the honey is all in the supers, move frames down into the brood box or remove the supers and feed the colony to build stores in the correct location.

Feeding the Wrong Sugar

Do not feed brown sugar, molasses, honey from unknown sources, or sugar substitutes. These can introduce diseases, cause dysentery, or provide inadequate nutrition. Use only white cane sugar for syrup and dry sugar feeding. If you are unsure whether a product is safe, ask your local beekeeping association or extension agent.

Forgetting to Check Stores in Midwinter

Many beekeepers assess their colonies in the fall and then do not check again until spring. This is a mistake. A colony can consume stores faster than expected, especially if the winter is long or if the colony is raising brood. Check your colonies in midwinter on a mild day. Heft the hive to estimate weight, and if it feels light, provide dry sugar or fondant immediately.

Decision Thresholds for Feeding

When to Feed Immediately

You should feed immediately if you find any of the following conditions:

The hive weighs less than the target weight for your region.
The brood box has fewer than four frames of capped honey in late fall.
The colony has no pollen stores and you expect a long winter.
The colony is light when hefted in midwinter.
The bees are clustered near the top of the brood box with no food above them.
You see bees crawling on the ground outside the hive in winter, which can indicate starvation.

When to Combine Weak Colonies

If a colony has fewer than about 10,000 bees in the fall, or if it has insufficient stores and is too weak to take down syrup, consider combining it with a stronger colony. Combining is often more successful than trying to overwinter a weak unit. The combined colony has a larger cluster, better temperature regulation, and a better chance of survival.

To combine colonies, use the newspaper method. Place a sheet of newspaper over the top of the stronger colony, poke a few small holes in the paper, and place the weaker colony's box on top. The bees will chew through the newspaper and mingle gradually, reducing fighting. Remove the empty box after the bees have combined, which usually takes a few days.

When to Call for Help

If you are unsure about the health of your colonies, or if you see signs of disease, contact your local extension agent or a veterinarian who works with bees. Signs that warrant professional advice include:

Large numbers of dead bees in front of the hive
Foul odors coming from the hive
Spotty or perforated brood patterns
Bees with deformed wings or other visible abnormalities
A colony that is rapidly losing population without an obvious cause

A veterinarian can help you diagnose diseases and recommend treatments. Your state apiarist or extension service can also provide guidance on local conditions and regulations.

Monitoring and Recordkeeping

What to Record

Good recordkeeping is essential for improving your winter feeding program over time. For each colony, record:

The date of your fall assessment
The estimated weight of the hive
The number of frames of honey and pollen in the brood box
The amount of syrup fed and the dates of feeding
The type of feeder used
The amount of dry sugar or fondant provided
The date of your midwinter check and the estimated weight
The outcome in spring, including whether the colony survived and its strength

This data will help you refine your feeding targets for your specific location and equipment. After a few years, you will know exactly how much food your colonies need and when to start feeding.

Using a Scale Hive

A scale hive is a colony that is permanently mounted on a scale, allowing you to track weight changes throughout the year. Scale hives are valuable tools for understanding how much food your colonies consume and when they consume it. By monitoring a scale hive in your apiary, you can see the rate of weight loss in winter and adjust your feeding program for your other colonies.

Scale hives are not difficult to set up. You can use a platform scale rated for at least 300 pounds, or a hive scale designed for beekeeping. Place the scale on a level surface, set the hive on top, and record the weight at regular intervals. Many beekeepers record the weight weekly during the winter.

The data from a scale hive will show you when your colonies are consuming stores most rapidly. This is typically during late winter, when brood rearing begins. If you see a sharp drop in weight in February, you know that your colonies need extra stores at that time.

Seasonal Calibration

Your feeding program should be calibrated to your specific location and your specific bees. The guidelines in this article are starting points, not final answers. Use your records to adjust the target weights for your apiary.

For example, if you find that your colonies consistently survive with 60 pounds of stores, you may not need to feed to 80 pounds. If you find that colonies with 60 pounds often starve in March, you need to increase your target. Your own experience, combined with local knowledge from other beekeepers, is the best guide.

When to Call a Veterinarian or Extension Agent

Most winter feeding decisions are within the scope of what a beekeeper can handle alone. However, there are situations where professional advice is warranted. If you see signs of disease, such as foulbrood, nosema, or deformed wing virus, contact your veterinarian or extension agent. These conditions can affect how the colony uses its stores and may require treatment.

Your veterinarian can also help you with nutrition questions. While most winter feeding uses simple sugar syrup or dry sugar, some colonies may benefit from supplements such as pollen substitute or probiotics. A veterinarian who works with bees can advise you on the appropriate products and feeding strategies for your situation.

Your local extension agent can provide information on regional nectar flows, winter severity, and best practices for your area. Many extension services publish fact sheets on winter feeding for bees, and some offer workshops or webinars on the topic. Take advantage of these resources to improve your feeding program.

Frequently Asked Questions

How much honey should I leave on my hives for winter?

The amount depends on your climate and winter length. Northern colonies with five to six months of winter need 70 to 90 pounds of honey. Intermediate regions need 50 to 70 pounds. Southern mild-winter regions need 30 to 50 pounds. These figures include honey in the brood box and any that remains in the supers. If you harvest honey, you must account for what you remove and feed syrup to replace it.

Can I feed bees sugar syrup in cold weather?

Bees cannot process syrup when nighttime temperatures are consistently below 50°F (10°C). The syrup may not be taken down, and it can ferment in the feeder or in the comb. Stop feeding syrup in early fall and switch to dry sugar or fondant, which the bees can consume without needing to evaporate water. Place dry sugar or fondant directly above the cluster so the bees can reach it in cold weather.

What is the best sugar-to-water ratio for winter syrup?

Use a heavy syrup made from 2 parts sugar to 1 part water by weight. This produces a syrup that is about 66% sugar, close to the concentration of ripened honey. The bees do not need to evaporate as much water from heavy syrup, so they can store it more quickly. Light syrup (1 part sugar to 1 part water) is better for spring feeding to stimulate brood rearing, but heavy syrup is the right choice for winter stores.

How do I know if my bees have enough honey for winter?

The most reliable method is to weigh the hive and compare the weight to your target. A standard deep box with frames and bees weighs about 40 to 50 pounds empty of honey. A full deep frame of honey weighs about 6 to 7 pounds. You can also do a frame-by-frame inspection to estimate the amount of capped honey in the brood box. A colony should have at least four to six frames of honey in the brood box for a northern winter.

Should I feed pollen substitute in the fall for winter stores?

Pollen is essential for brood rearing, but fall is not the primary time to feed pollen substitute. The priority in fall is ensuring adequate honey and syrup stores. If a colony lacks pollen stores in the fall, you can provide pollen substitute patties, but the bees must be able to consume them before cold weather confines them to the cluster. Pollen substitute is most useful in late winter and early spring when natural pollen is not yet available.

Why did my bees die in winter even though I fed them?

There are many possible causes of winter loss besides starvation. These include disease, mites, poor queen quality, moisture buildup in the hive, and inadequate cluster size. If your bees died with stores still in the hive, the cause was likely not starvation. Check for signs of disease, monitor your mite levels, and ensure your hives have adequate ventilation. Your local extension agent or veterinarian can help you diagnose the cause of winter losses.

Can I feed bees honey instead of sugar syrup?

Feeding honey from your own apiary is generally safe, but feeding honey from unknown sources is risky. Honey can carry diseases such as American foulbrood, and spores can survive for decades. If you feed honey, use only honey from your own healthy colonies. Do not feed honey purchased from grocery stores, as it may contain spores or be blended with honey from unknown sources. Sugar syrup is safer and more economical for most feeding situations.

When should I stop feeding bees for winter?

Stop feeding syrup when nighttime temperatures regularly fall below 50°F (10°C) or when the bees stop taking the syrup down. This is typically in October for northern regions. After this point, switch to dry sugar or fondant. The bees can consume dry sugar throughout the winter, but they need warm days to process syrup properly.

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This section will be populated with links to related animal farming guides after publication. Check back for updates on winter livestock management, poultry cold-weather care, and other seasonal farming topics.

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References

This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.