This hydrangea cutting has been in this pot for a few weeks now. Several days ago I removed the plastic bag that was covering it, as the stick that I was using to hold the bag upright started to mold from the moisture. There are obvious roots and new leaves at the lower nodes...but the gradual discoloration of the leaves concerns me that it isn't thriving?? Any ideas? It's housed indoors and receives indirect light from an adjacent window.