Posted: 17/02/2017 at 11:18
You don't need to start tomatoes so early. As you have a greenhouse I think it would be more practical to look into ways of heating it. Does it have an electrical supply? If not, there are paraffin heaters. If you get your seeds germinated that is only the start, where will you put all the baby plants? You need a frost free greenhouse. When the weather warms up seeds sown later will grow better and faster.