I would just like to add that if you feed chickweed, make sure you never plant Lobelia (
Lobelia - Wikipedia, the free encyclopedia ) or harvest from an area where Lobelia has been previously planted. Lobelia looks an awful lot like chickweed when not blooming, and it is poisonous (its other common names include Pukeweed and Vomitwort). However, it has lovely purple flowers, is hardy, and often reseeds, so it is a common garden plant. If you're ever unsure, only feed blooming chickweed (
Stellaria media - Wikipedia, the free encyclopedia ). The flowers are very different in shape and color, so it's easy to tell the two plants apart.