I propogated rose bush cuttings - don't know what kind of rose bush. I scraped them stem, applied rooting hormone, put them in 1/2 peat, 1/4 sand, 1/4 vermiculite, and covered them with a jar in the greenhouse. They took off, put on new leaves and were looking just perfect. Just as soon as I took the jar off they wilted in just a matter of an hour. I've still got one growing like crazy under the jar. What do I do? As soon as I lift the jar it will die, I tried proping the jar up just a little and that one died also. Thank you for helping me.