StinkyAttic knows what she's talking about - Jiffy pots suck - been there, done that, never again - while you CAN have good results with them, they're not worth the effort ... tend to be acidic, go thru wet and dry cycles too easily, very easy to wind up with Pythium Wilt, etc - don't worry about penetrating the pot - when you transplant, just poke some holes in them, or make cuts - no big deal