Boosting winter brood: a low-cost queen excluder hack
A cheap DIY queen excluder keeps winter brood safe while saving honey stores.
A simple excluder can protect your winter bees without draining your honey reserves.
What happened
After a cold snap, a backyard beekeeper noticed the queen slipping into the winter cluster, causing premature brood loss. He fashioned a thin mesh excluder from hardware store screen and placed it at the hive entrance. The queen stayed out of the winter brood, and the colony survived the freeze.
Why it matters
Winter brood loss can cripple a hive's spring buildup, forcing costly requeening or replacement. Using a low‑cost barrier preserves the queen’s egg‑laying capacity and protects stored honey for the colony’s spring surge. Small interventions like this keep backyard operations sustainable and profitable.
How to think about it
Cut a piece of 1 mm hardware screen slightly larger than the hive entrance. Fold the edges inward to form a shallow collar, then secure it with a few staples or a dab of hot glue. Install it after the final honey harvest and before the first hard freeze, checking that worker bees can still pass freely.
- Cheap (<$2)
- Easy DIY with common tools
- No impact on honey flow
- Requires careful sizing
- May need occasional cleaning
- Not suitable for very large bees
Make sure the mesh opening is small enough to block the queen but large enough for workers to move unimpeded.
FAQ
Can I use any mesh material?
A stainless‑steel or galvanized screen with 1 mm openings works best; avoid plastic that can warp in the cold.
Will the excluder affect ventilation?
If installed correctly, airflow remains unchanged; just ensure the collar doesn’t seal the entrance completely.
Do I need to remove it in spring?
Yes—once temperatures rise and the colony resumes normal brood rearing, take the excluder off to let the queen move freely.
Sources
Useful tools for backyard beekeepers
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