This time of year beekeepers are intently pursuing a number of different objectives. Are my clonies queenright? Are there swarm cells? Pursuing swarms in the trees. Getting honey supers installed. But most of us forget one of the most important tasks. Controlling varroa. Winter survivor hives are raising brood; both worker and drone brood, at a furious rate. This activity allows varroa to also re-produce. As a minimum you should start monitoring varroa levels. Some beekeepers treat varroa in the spring. If your honey supers are already installed you should only use formic acid or oxalic acid treatments. If your supers are not yet installed you can use other chemical treatments, but must wait at least 3 weeks prior to installing your honey supers. Otherwise your honey will get contaminated with these chemicals.
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