Here in SW Pennsylvania I plant Mancan buckwheat around the end of May. By the end of June the plants are blooming heavily and the bees are working it hard in the morning. Since the plants don't produce any nectar in the afternoon the bees have to find something else to keep them busy afteer about 1:00.
Over the last five years I've gotten a good honey crop out of the buckwheat four of those years. Last year is the only year they didn't produce a good crop. Go figure.
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