It's an up stairs room and the wood stove is in the room below it so it is a pretty warm room. Temp is probably at least 70 - 80 constantly but I think 60 would be fine. I store my cannas in a colder area. My son's basement which is colder. My Dad has his Mandevillia go dormant in the basement probably 60-70. I usually start them a bit earlier about the end of April in a protected area. Our last frost date is around May 15th. But this year I was running later and they really don't really get going until the ground warms up. The EE's were planted in ground around the end of May. I am hoping to get an earlier start next year as we are putting up a GreenHouse and I am hoping to put out good sized plants after our frost date rather than the barely started bulbs I am usually planting.