Hello--

I have about a dozen adenium plants that I bring inside for the winter. I used to have a plant light that I kept them under during the cold seasons, but the ballast burned up, so I've just been letting them go dormant in a cold room. A couple of the plants have gotten tip rot on them as the leaves have died off. If I prune the affected branches back, will cinnamon on the open wounds prevent the fungus from spreading, or should I just buy a fungicide? Thanks for any info!