Posted: 08/04/2015 at 19:11
If you can grow bush types, you can grow any tom, Gillygee. Apart from as much sun as possible - 6 to 8 hours a day is ideal - it's all down to temperatures, especially overnight. Planting out when overnight temps are in single figures won't hurt the plant - within reason, obviously, I'm talking about 8 or 9C - but their development will be retarded. You're better off waiting.
As an experiment, I once planted out a couple of plants with overnight temps of around 8C. A month later, I planted out the rest with overnight temps of 12-14C. They matured at the same time. The early plantings took that much longer.
Fleece doesn't really compensate.