If this cannot be given, use a fluorescent tube specially designed for plant growing. These are available under a variety of trade names. Most annual plants and vegetables prefer nighttime temperatures between 60 and 65 degrees F. Day temperatures may run about 10 degrees higher. If temperatures are warmer than this, leggy plants result. F. An unused bedroom, basement or sun porch is often a good location.
Good humidity is an asset for producing good plants.
A humidifier may be used, or shallow pans of gravel filled with water may be placed as close to the growing area as possible. Flats should be kept moist at all times but never soggy. Allow drying between waterings, but don t allow seedlings to wilt at any time. Seedlings will need some fertilization for best development. Those in totally artificial mixes need prompt and regular fertilization.