Heart-leaved alexander

A larval food host for the black swallowtail butterfly.

Unique leaves attract the attention of both people and black swallowtail butterflies, which lay their eggs on them, and yellow dill-like flowers attract a wide variety of insects. The caraway-like seeds don’t fall far from the plants, so plants often occur in colonies. Though not poisonous, neither the plant nor seeds are edible. (I can attest that the seeds taste horrible!)

Grows with upland white aster, harebell, dwarf milkweed, Canada lousewort, sticky asphodel, prairie dropseed, big bluestem and sorghastrum.

Flower Colour: yellow
Life Cycle: perennial
Sun Exposure: full sun to part shade
Bloom Period: May – June
Height: 1 – 3 ft.
Soil: medium – moist