HEIRLOOM. Green Zinnias in your garden make a dramatic display that words can only partially describe. 3" double and semi-double blooms look as sensational in the garden as they do in the vase. Try them in fresh arrangements with white, deep blue or pink flowers. Can be sown directly in the garden after all chance of frost, or start indoors 6-8 weeks before last frost for earlier bloom. This annual grows best in full sun in well-drained soil.