200 seeds. Zinnia elegans. Annual.
 
Zinnia 'Dark Violet' has double blooms in solid purple. The large, 4-inch flowers look impressive even at a distance. They start blooming in late-summer and continue through the fall.
 
Height 3 feet. Spacing 12 inches.
 
Sowing Zinnia seeds:
 
Sow seeds outdoors after the last frost date. Or start indoors 4 weeks before the last frost date. Sow 1/8 inch deep. Full sun.