1) Chigger flower 2) Milkweed 3) Swallowwort 1) Herb 2) Herbaceous plant 3) Latex-producing herb 4) Milkweed 
• (n.) Any plant of the genera Asclepias and Acerates whose seed vessels contain a long, silky down; milkweed.
(Asclepias) Most of these perennials are from North America, but at least one is from South Africa and one is found in tropical America. Nearly all of these erect plants grow 2 or 3 feet high, but one, A. physocarpa (also known as Gomphocarpus physocarpus and commonly known as the Swan Plant), grows up to 6 feet high with a spread of 2 feet. This p...
Silk'weed` noun (Botany) Any plant of the genera Asclepias and Acerates whose seed vessels contain a long, silky down; milkweed.