Which of these flowers is NOT listed among the common nectar sources that rival or surpass milkweed attraction for Eastern Tiger Swallowtails?

Answer

Aspen leaves

Joe Pye Weed, Blazing Star, and Honeysuckle are explicitly listed as common nectar sources that rival or surpass milkweed attraction; Aspen leaves are a larval host plant for the Western variety.

Which of these flowers is NOT listed among the common nectar sources that rival or surpass milkweed attraction for Eastern Tiger Swallowtails?
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