Germination of seeds of the common bitterweed was tested under several temperature regimes. The effect of constant temperatures depended upon duration of storage. Fresh seeds germinated well without ...
Q. A friend suggested I plant a perennial called Helen’s Flower in my garden. Can you tell me more about it? A. Helen’s Flower (Helenium autumnale) is a perennial native to the U.S. It is also ...
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