Sow Toad Lily seeds directly in the garden in late fall, or early in the spring, up until one month before the last killing frost date. If you are starting your Toad Lilies indoors, place your fresh seeds in the refrigerator for a 2 weeks (or longer) before planting. Sow the seeds onto a moist growing medium Space them one-half to 1 inch apart and maintain a temperature of 65-70 until germination which takes from 2 to 4 weeks.