| Sweet William Catchfly Seeds ( Silene armeria ). Sweet William Catchfly is a shown annual flower native to Europe. Sometimes called Lobel's Catchfly, it was established in American gardens in the 1820's. The broadside Bernard McMahon published in Philadelphia about 1804 offered seed for both red and white forms. In spring or early summer, scatter seeds thinly over well-prepared ground in a sunny spot. They may also be started indoors for transplanting. In USDA Zone 7 or warmer, early fall sowings produce crowns that usually overwinter and bloom... - Sweet William Catchfly Seeds ( Silene armeria ). |