I just ordered Nicotiane seeds and would like to know the answer to your question also? I wasn't thinking so much about WS and just setting up my "garage greenhouse" and starting seeds. Except I don't have enough light for all my plants so they would be pretty spindly by June 1. My cold frame is officially under 3' so snow on the deck. Should have gotten stuff planted and into it before now. I will have to shovel my way to it and uncover it. Probably when we get back from Hawaii. We leave on Monday the 9th and return on the 19th. Then I really have to get hoppin'