Chapter 11: Health, Pests and Diseases – Natural Approaches
Overview of Chapter Eleven~
Prioritise genetics: local, untreated stock.
- Varroa: Monitor with natural drop; use drone brood removal, powdered sugar, or thymol if essential.
- Diseases: Strong colonies self-manage.
- Predators: Mice screens, badger-proof stands.
No routine chemicals.
Chapter Eleven~
Health in this system rests on local genetics, continuous comb renewal through harvest, adequate nutrition, and site. It does not rest on a calendar of treatments. Varroa destructor is present throughout Ireland and remains the main parasite. Natural mite drop onto a mesh floor gives a rough seasonal picture. Drone-brood removal in May and June removes a portion of mites if you are willing to cut comb. Powdered sugar dusting and thymol products are used by some keepers when drop counts rise sharply; organic acids are another option but require correct temperature and dose. The book’s stance is to monitor, to prefer stock that has overwintered without synthetics, and to treat only when infestation clearly threatens collapse rather than on a fixed schedule. Colonies that collapse from varroa should be removed promptly so mites do not drift.
Brood diseases are less common in strong, unstressed colonies but still occur. American foulbrood is notifiable: ropey larval remains and a foul smell mean you stop, close the hive, and contact the Department. Do not shake such bees into clean equipment. Chalkbrood and sacbrood often clear when the flow improves and the colony expands. Nosema is managed by good quilts (dry interiors) and by culling very old comb through the harvest cycle.
Predators and pests are practical. Mice enter in autumn and build nests in quilt or empty comb; the guard prevents them. Wasps are a late-summer issue at weak hives; reduce entrances. Badgers and cattle overturn stands; height and fencing stop most losses. Wax moth damages stored comb, so keep spare boxes in the light or freeze combs if you hold them over.
No routine antibiotic or synthetic miticide is part of the method. Keepers who choose an intervention should follow current Irish and EU rules on residues and record it. The long-term route expected here is selection: propagate the colonies that survive and build well, and do not replace losses automatically with imported stock.
