Dear Mary Sue The seed was planted on Sept. 26 in small pots and about 1/2 inch deep. I had to be gone until Oct.8. During the time I was gone the temp. went to 30 F. The plants seem fine and this morning I noticed that 12 have leaves. All the seed are still in good condition and none have gone bad. I hope this helps. Daniel Thompson Kentucky. -10 average low the past few years and 95+ F for the high temp.