Marilyn-- I believe I got my seeds from Emily who is Yvonne's daughter back in 2006. Been growing it since. It's an annual for me, so I always collect seeds from the plant. It produces many seeds usually. Would you like some? I haven't collect any seeds yet, but will soon.
Judy- My garage is dark, no light. I let them go dormant and water sparingly. About a cup a month. Bring them back out when I know it won't freeze anymore. Sometimes I bring them out too soon and end up bringing them back in the garage briefly.
