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 ...

Purple-headed sneeze weed has to be near the top of the ‘’bad names for great plants’’ list. A native perennial, this 2-to-3-foot species (Helenium flexuosum) is so attractive that it’s often mistaken ...