Nope just use caution when taking apart the plug before you plant it how ever you are going to grow.

I use them when I grow from seed and they clean up just fine for Hydroponics use.
Zandor Reviewed by Zandor on . jiffy peat pellets i use these to start my seeds after the paper towel thing.i noticed that the root that comes out from the bottom is very fuzzy.after i remove the skin from the pellet the lil hairs are gone.does this harm the plant in any way or not.anyone know what im talking about. Rating: 5