Asclepias viridiflora (Apocynaceae)
Green Comet Milkweed
Just a foot tall, this is a short one in the milkweed clan. Unbranched stems are lined with narrow pale green leaves, and topped in mid-summer with light green dangling flower clusters. These blooms take on yellow or purple tones as they mature. Feeds butterflies, but is also especially attractive to our friends the bumblebees. Widely distributed, particularly west of the Mississippi, in prairies and along the edges of dry woods. It can take a little shade and needs good drainage.
Bloom period: mid-summer
Container size: Qt.