05/09/2026
⚠️ SPRING VARROA WARNING – DON’T LET A LOW WASH FOOL YOU
A warning for local beekeepers as our colonies rapidly expand their brood nests.
A low or even zero alcohol wash does NOT necessarily mean you have very few Varroa.
As spring brood increases, mites move from adult bees into brood cells to reproduce. Your wash only measures the mites on adult bees – it cannot see what is under the cappings.
I recently checked 134 just-capped worker cells and found 18 infested (13.4%), containing 22 adult female mites.
So if your washes are suddenly looking surprisingly good as your brood explodes, don’t assume the mites have disappeared. They may have simply moved into the brood.
Keep monitoring, and don’t let a low spring wash give you false confidence.