WBVC, I'm in your region. In Skagit county, we generally use buttercup bloom as the indicator of our nectar dearth. Most here in NW Washington use it to determine if syrup feed is needed until blackberries. A typical year is about three weeks of dearth from buttercups until berries, depending on weather.
I'm just across the water on the island. We saw the first buttercups last friday, they started replacing the dandies in some fields around us. My scale hive has put on 6lb since then, so the bees are still working something.
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