Like DrDawg I use cinnamon when repotting orchids. I also use it when dividing other plants. have also found that it repels any ants you may have in containers. I just sprinkle it on top of the soil and some around the base of the container (not when you're expecting rain!). Those little blighters move away very quickly. Beats having to use a spray on the soil, or having it get on the plant.
