Winter Sowing: Two Reliable Methods for Outdoor Seed Starting Emergency Candle Heater: Building a Single Candle Clay Pot Radiator I have mushrooms growing in my indoor potted plant soil : r mushroomID Hear me out Many fertilizers that you can buy are made from urea which is a compound that naturally occurs in urine. Now, I know this may not be for everyone. Growing canna plants from the seed collected last year, great result! Harvested well over 100 seeds from this one plant, and left in a dry jar until Feb. I scarified them with some nail clippers