Annual. Each packet contains 0.1 gram, which is approximately 350 seeds.
Depending on the texture and density of your soil, watering the seed in after broadcasting may be enough. Otherwise, cover with abut one-quarter inch of light, fine soil. The best soil temperature for germination is 65ºF to 75ºF and will germinate in 14 to 21 days. Once seedlings appear, thin them to eight inches apart.
- "Lewis and Clark as Naturalists," Smithsonian National Museum of Natural History.
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