Posted: 02/02/2016 at 16:42
Look on the back of the seed packets,it will say when to grow, pick a time about the middle of the months suggested, and the temperature they need to germinate,put a day/night thermometer in your plastic greenhouse and see if that temp is maintained over night.
dont forget that if you grow seeds in seed trays you will only be able to grow anminimal amount of variety of seeds, or have you separated your seed trays into four sections. what will you do with them when they are pricked out into separate flower pots. Have you got plenty of room. Lots to think about.
I grow all almost all my seeds in rice pots, that way I can grow 200 different varieties and just have about 8/10 decent plants of each variety.
good luck with your new venture.