Seasonal Care · · 6 min read
The June Gap: Why Strong Colonies Starve in Midsummer
Spring bloom finishes, summer forage has not started, and the biggest colonies of the year run out of food in a week. The June gap is short, predictable, and still kills hives.
By Dr. Anke Roos, Bee health researcher. About the author
The most common time to lose a colony to starvation is not January. It is early summer, in the quiet weeks between the spring blossom finishing and the summer flowers opening — the June gap.
It catches people out because everything looks fine. The weather is warm, the colonies are enormous, and the idea of feeding in midsummer feels wrong.
Why the Gap Happens
Fruit blossom, dandelion, hawthorn, and rape all finish within a few weeks of each other. Bramble, lime, clover, and the summer wildflowers have not started. In between there is a stretch — usually somewhere from late May to late June depending on your latitude and the season — with very little coming in.
Meanwhile the colony is at peak population. Forty or fifty thousand bees with a full brood nest consume a startling amount of food. A hive can burn through several kilos in a week with nothing to replace it.
Two more factors make it worse:
- You may have just extracted the spring crop, removing exactly the buffer the colony needed.
- Cold or wet weather during the gap stops even the marginal foraging that would otherwise carry them.
Recognising It Early
The gap announces itself before it bites, if you look:
- Entrance traffic drops sharply, with little pollen coming in on a warm afternoon.
- Colonies get defensive — a hive that was calm in May turns snappy.
- Uncapped nectar disappears from the brood frames, then the arc of stores above the brood shrinks.
- Eggs and young larvae are cut back as the colony reins in the queen. That is the last warning before real trouble.
The most reliable check does not need the hive opening at all.
Hefting the back of the hive weekly through June tells you more than an inspection does. You are not measuring anything absolute — you are noticing that it feels lighter than last Sunday.
What To Do About It
Feed if they are light. A 1:1 sugar syrup, one to two litres, given in the evening. Do not feed if supers are on for a crop you intend to sell — take the super off first, or use frames of stored honey instead. Feeding during a dearth also raises robbing risk, so feed inside the hive, avoid spillage, and reduce entrances on small colonies.
Keep some spring honey back. A couple of capped frames per colony left over from extraction are the cleanest possible insurance, and they cost nothing but shelf space.
Do not split into the gap. Nucs and splits made just before a dearth have no forage, few foragers, and a virgin queen that may not get mated in poor weather. Wait for the summer flow.
Plant and protect the bridge forage. Lime trees, bramble hedges, clover left unmown, and phacelia sown in spring all land squarely in the gap window. A small area of the right plant nearby changes the picture more than feeding does.
It Is Not the Same Every Year
The gap moves. A late spring compresses it to nothing; a hot dry June extends it into July and turns it into a full summer dearth. That is why a fixed calendar rule — "feed in the second week of June" — is worse than a weekly heft.
Recording hive weights or a simple light/medium/heavy judgement against each colony in ApiaryPilot builds up a season-by-season picture of when your own gap actually falls, and which apiaries feel it hardest.
