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puffkit

Swallowtail madness!

puffkit
13 years ago

Has anyone else noticed an explosion of eastern swallowtails this year? we are in zone 6b/7a in maryland and i have seen at least 4 or 5 times more tiger swallowtails than i have ever seen before. granted we have lots of plants that make them happy (joe-pye weed, poplar, lots of buddleias) but i've never seen so many before. at any one time i can circle our yard and count maybe 50-75 of them. in addition i have seen very few monarchs. in years past the ratio would have been about 70:30 swallowtails:monarchs on our property....this year it's more like 99:1. is it the heat? any effect from the snowy winter? anyone have an explanation?

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