Milkweed is a weed of perennial crops or no-till fields. It very seldom is a problem in plowed and cultivated fields. A tall plant, it has a milky juice which was investigated as a source of rubber. The seed pods contain a silky material which was used at one time to stuff life preservers. Orange milkweed (Asclepias tuberosa) is a highly colored variant. Seldom a weed it is food for the monarch butterfly.
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