How much honey should I leave in my hive?

How much honey will your bees need for winter? Good question. But before I answer, here’s a question for you: How much heating fuel will my household use this winter?

Well, you say, that is complex. It depends on where you live, your local climate, and the size and geometry of your house. It depends on what type of furnace you have, how warm you like it, and how many people live there. It depends on how much insulation you have, and whether you have wind breaks, and what color it is. It depends on air leaks and ventilation and the materials it is made from. It depends on whether the seasons are early or late. And on and on.

Your bee colony has different issues, of course, but just as many. The climate and weather, the amount of ventilation, the structure of the hive, the number of bees, the kind of bees, the number of warmish days and the number of abnormally cold ones are some obvious examples. The fact is, you can’t predict exactly how much honey a colony will need, so it is better to estimate on the high side.

I checked dozens of sources this morning and found an amazing amount of agreement on general guidelines. Bees in the southern U.S. may thrive on as little as 40 pounds, bees in the middle states need about 60, and northern bees may require 80 or 90. Those are average numbers for average years and average hives. What’s average? Another good question.

In all but the warmest areas, I recommend that a beekeeper leave 80 to 90 pounds. In nearly all cases, this will assure a good supply of natural food for your bees, and it will save you messing around with syrups and sugars and supplements. In short, it is good for them and good for you.

The Mann Lake catalog used to have estimates for the weight of full boxes. According to them, a full ten-frame deep weighs 80-90 pounds, and a full ten-frame medium weighs 65-75 pounds. Discounting the weight of the structure and dividing by 10, a full deep frame holds about 8 pounds of honey and full medium holds about 6 pounds. (If you evenly space nine frames in a ten-frame box, a full frame will weigh a bit more.)

According to Caron and Conner (2013), the ideal fall colony will have brood in the center of the lowest box. This will be flanked with frames of honey and pollen, and the two outermost frames will be filled with just honey. The second deep will be filled to the brim with honey—all ten frames.

Applying the math to their ideal colony, you will have 12 deep frames completely full of honey which gives you (8 x 12) or 96 pounds, plus any additional that is stored on the pollen frames.

This setup should get you through any winter, but in the more temperate states, you could easily replace the second deep with a medium, which would give you (6 x 12) or 72 pounds of honey plus any additional on the pollen frames.

A common error that new beekeepers make is harvesting the honey supers without checking the brood boxes for honey. You cannot assume the deeps are full just because the honey supers are full. Often the bees use one or both brood boxes for brood and pollen during most of the season. Not until late in the year do they start moving the honey closer to the brood nest. If you take the supers without checking, you could be leaving your bees with almost nothing for the winter. So above all, remember to look before you take.

Rusty
HoneyBeeSuite

A-full-frame-of-honey
A full frame of honey. © Nancy McClure.

When the feed is too close

A beekeeper near San Francisco complained that her bees wouldn’t leave her hummingbird feeder alone, so she set up an open feeder containing sugar syrup directly in front of her hives to divert the bees from the hummingbirds. Much to her dismay, the bees continued to dine at the bird feeder and ignore the syrup she provided in her apiary.

She decided that her bees must prefer hummingbird nectar over plain sugar syrup, so she replaced the syrup in the bee feeder with hummingbird food mixed with water. Still the bees ignored their feeder and returned to join the hummingbirds. What is going on?

As we know, honey bees are brilliant at pointing their sisters to distant food sources. The waggle dance is used for food sources that are far from the hive, and the round dance—which contains less information—is used for sources that are less than about 50-70 meters from the hive.

But according to some observers, honey bees have a problem when the source is very close. Why is this?

Jürgen Tautz in The Buzz about Bees says this about the round dance:

A round dance contains only some information about the quality feeding site. An indication is merely given about what to look for, and that this source can be found close to the nest. A bee that returns from visiting a cherry flower will smell like cherries, and a cherry tree can be found easily enough after a few flight around the hive.

But a bee coming home with a sample of sugar syrup isn’t going to smell like a flower. So even though the sugar tastes sweet, it will be difficult for a bee to explain the location to her nest mates if the syrup is less than 50-70 meters away. If it doesn’t look like a flower, and it doesn’t smell like a flower, the bees really have no reason to check it out. Some will probably find it—more or less by accident—but when they return home to report their finding, they have the same problem: how to explain the location.

In this case, it was probably much easier for the bees to locate the hummingbird feeder (which was much further away and brightly colored) than the open bee feeder that was in tripping distance of the hives. It seems that the bees will eventually find these sources, but the process is more random and takes longer than you might expect.

I have found that a drop of flavoring oil—something like tea tree, spearmint, lemon grass, anise, or peppermint—solves the problem in no time. When the bee returns to the hive smelling delicious, and she explains that the source is nearby by using the round dance, her nest mates will search in the vicinity of the hive for the scent she has delivered and immediately find the source, even if it doesn’t look like a flower.

Rusty
HoneyBeeSuite

Let the hummingbirds eat in peace. © Rusty Burlew.
Let the hummingbirds eat in peace. © Rusty Burlew.

The value of a post mortem

One of the worst mistakes we can make—in any endeavor—is failing to learn from our mistakes. But we can’t learn until we know what went wrong, and that is the job of the post mortem. But beekeepers frequently assume they know what killed a colony without actually doing the leg work to prove it. I’ve done it, and many others have done it as well.

Here’s an example: It was a cold and blustery winter in the mid-Atlantic when Fred’s two hives died. When he looked inside, he saw lots of honey and two small clusters that looked like they froze to death. His conclusion: the bees weren’t warm enough. Next year he will add more insulation, moisture boards, tar paper, and whatever he can think of to prevent his colonies from freezing to death. He might even add a terrarium warmer and put them in the garage.

Now if this fictitious beekeeper had actually done a thorough post mortem, he would have known that although his remaining bees ultimately froze, that’s not what doomed the colony. A bumper crop of parasitic Varroa mites had been living among the bees as evidenced by copious bundles of guanine left in the brood cells. The mites killed many bees by sapping their strength and delivering viral disease until the colony was no longer large enough to keep itself warm, so the remaining small cluster did, indeed, freeze.

But by naming the wrong cause, the cold, Fred is destined to make the same mistake again—ignoring the mites. All the insulation, heaters, moisture control, and babysitting in the world won’t help if mites are taking over the colony.

No matter when your colony dies, it is fitting to do a post mortem. Even if you don’t know what the signs mean, make a note of them, take photos, or both. Later, you can get someone to help you analyze what went wrong so you can do something different next time—the right something instead of the wrong one.

Look for honey stores, pollen stores, brood. If brood cells look abnormal, note that. If they look normal, open a few. Do the pupae look normal? Do you see mites? Look at bottom board debris: What is it made of? Is anything living in it? Are dead things in it? Look at the top bars: Is bee feces evident? What about beetles?  Wax moths? Yellowjackets? Mice? Are frames moldy? Is the interior wet? Was the hive robbed? Is there a cluster of dead bees? Where is the cluster in relation to the nearest food? Look for signs of disease. Look for guanine deposits. Look for deformed wings. Record it all, no matter how insignificant it may seem.

I used the example of cold bees for a specific reason. I believe that most colonies belonging to hobby beekeepers die from two things: starvation or Varroa mites. I also believe that few colonies that are well fed and mite free actually die from cold. To a robust colony, the cold is almost a non-issue, especially if the bees are dry. But even a little moisture shouldn’t be life threatening to a strong colony.

That’s not to say there aren’t other reasons for colony demise—there are many—which is why a good set of observations can make you a better beekeeper the next time around. Don’t let first impressions fool you: always dig deeper.

Rusty
HoneyBeeSuite

What does it all mean?
What does it all mean?

Winter is coming and your bees know it

I missed the summer solstice this year; I wasn’t paying attention and it slipped right on by. The summer solstice is important because it signals the end of bee season, just as the winter solstice signals the beginning. “The end of bee season?” you say. “But it’s just getting started!”

Here’s the thing: In temperate North America, the bee colony is at its smallest in late November and December. After the winter solstice, it gradually starts to build. The queen lays more eggs, there is more activity in the nursery, slowly the population increases. By the end of June most colonies are as strong as they are likely to get. Basically, the six months from January through June are months of increase, followed by the months of July through December which are months of decrease.

Sure there are variations and fluctuations depending on local climate, weather patterns, and individual colonies, but the trend is six months of increase and six months of decrease. I read recently that the response to photoperiod (increase or decrease of daylight) is much less in honey bees than in other insects. But regardless of how it works, you can see the yearly pattern in your colonies.

Up through June, beekeeping is as easy as breathing. In most cases, the rate of growth in your hive is greater than the growth of most predators and parasites. You wonder, “What’s all the fuss about mites?” You don’t see them anywhere. Are beetles and moths really a problem? You wonder what’s so hard about raising queens, catching swarms, or making honey. Like a rising market, everything looks rosy. The whole beekeeping thing is a piece of cake.

By the beginning of July things start to change. Much of the continent is headed toward a nectar dearth. Almost imperceptibly the ratio of problems to bees shifts. Swarms virtually cease. The swarms that are cast are usually small or weak. Just as the poem says, “A swarm in July is not worth a fly.” Splits take longer to build up. It’s a little harder to raise good queens. Honey production slows to a crawl. Even flowers that are in bloom may have less nectar because rainfall has dropped and temperatures climbed.

New problems arise. Your bees spend all their energy fanning. Robbing honey bees appear out of nowhere. Marauding yellowjackets and hornets case your hives looking for a meal. Your sweet little honey bees suddenly become skittish and would rather you stay away. Your neighbors complain about bees in their pool and hummingbird feeders.

Like yellowjackets and wasps, mite populations continue to grow, even while your honey bee populations are dropping. Suddenly, it seems like there is a handful of mites for every bee. Weaker hives may be overcome with beetles. By August workers are throwing out the drones in a last ditch effort to prepare for the coming winter. Foraging continues as long as there is something to collect, but it is harder, consumes more energy, and takes more time.

The solstice is not like a switch. Bees are not one way on the 21st and a different way on the 22nd, but the change is sure to come. The seasoned beekeeper knows this intuitively, but a new beekeeper needs to be aware that change is in the wind. The key is to be ready and to handle each situation as it arises. Remember: beekeeping doesn’t take much time, but timing is everything.

Rusty
HoneyBeeSuite

They-know-things
They know things we don’t. © Rusty Burlew.

Drones under house arrest

Beekeepers are frequently advised to put a queen excluder under the brood box to keep a new package from absconding. Since the queen can’t leave, the colony won’t leave either.

This is good advice that works well as long as you remove the excluder once the bees have settled in. Since drones cannot leave through the excluder, they are prohibited from leaving the hive as well. Recently, someone asked why they couldn’t just leave the drones inside.

Several reasons came to mind, and I’m sure you can think of others:

  • Incarcerated drones get in the way of progress in the nursery. Instead of helping with the work, they take up space, and the workers have to maneuver around them.
  • Drones consume the food stores that workers collect for winter. Drones that don’t fly probably have a longer lifespan than those on the prowl, and at home there’s nothing to do but eat.
  • Drones increase the heat load in the hive. In a colony that is desperately trying to keep the nursery cool, the last thing the bees need is an abundance of sweaty drones, each with three pairs of smelly socks.
  • If they can’t get out, drones will be forced to defecate in the hive. The workers must then spend time shoveling instead of building and nursing.
  • Once they die, dead bodies will contaminate the interior of the hive. Since drone bodies can’t fit through the excluder, the workers can do nothing but pile them in a corner. R.I.P.
  • From a larger perspective, those drones are an important part of the gene pool in your area. If you prevent your drones from flying, you are deleting their genetics from the local population.

As a beekeeper, it is easy to be overcautious. Yes, you want to prevent your new package from absconding, but if you go too far you will jeopardize the colony in other ways. So as soon as you see your bees hanging pictures and building comb, it is time to get that excluder out from under the brood box.

Rusty
HoneyBeeSuite

Drones just love a good top-bar hive.
Drones released on their own recognizance.