I have 3 unrooted cuttings which are all in the same pot. They are leaning in a mix of potting soil and perlite. 1 is doing fine, but the other two are turning to mush at the bottom. Can I cut off the bottom and start again or throw them away? I was going to going to put the 2 into a 50% mix of water and perioxide for a few minutes after i cut them to stop any disease or rot. What does everyone think? Please help.