Asclepias hirtella, or Tall Green Milkweed, grows up to 4 feet tall and features prolific white-green flowers with up to 100 blooms per umbel. It has narrow, alternate leaves, distinguishing it from other milkweeds with opposite leaves. This species thrives in medium-wet to dry soil and prefers full sun to partial shade, reproducing by seed and making it drought-tolerant. It blooms in mid-summer, attracting pollinators like bees, butterflies, and wasps, and serves as a host plant for Monarch caterpillars. Unlike other milkweeds that spread through underground roots, Tall Green Milkweed spreads by seed and grows best in well-drained, sunny areas