I killed off a lot of things already but lets not talk about that. I threw these 2 plant trays in an unused planter then threw a thick plastic cover I found in the garage over them. The weather got cold and I was sick and tired of bringing all my trays into the house at night. So I threw these 2 in here ( basically because they looked like they were going to die anyway). I forgot about them and they sat under that cover for about a week. Yesterday the wind blew the cover into the middle of the yard and when I peeked into the planter I got a pleasant surprise. There is still time for me to kill them off yet, but for now things are looking good.