Hi, I'm not sure what I did, but I killed 2 bulbs 2 winters ago--it was not very cold but they didn't return in the spring. Do they need protection from hard frosts if they are in pots? Do they need pH-adjusted soil because the come from limestone soils originally? I'm asking because a friend gave me another bulb yesterday, hers were in full flower in gallon and 2-gallon cans. They sit under the eaves of her home, in half-day sun on the west side. So, they don't get too much rain year round, but they will get some as it blows in and as it splashes in. Also, they will get baking hot sun all summer. If that is the formula I'm happy to give them baking hot sun and limited water--I have an excess of hot sun in summer. Cordially, Conroe Joe not too hot now, nights near 60, lots of humidity but not rain the past 2 days.