If you happen to have a porcelain berry bonsai, Ampelopsis brevipedunculata, watch out for yellowjackets. This plant is an Asian native, where it is pollinated by several different insects, including a wasp. I don't have it as a bonsai, but I am training it on the fence. I have the variegated form, & in Zone 5 it is not invasive. Here in the Northeast, I noticed that it is pollinated by our local yellowjackets. They are not very efficient, & I don't get big clusters of berries. I treat the yellowjackets with respect, as long as they don't invade the rest of the yard.
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