Avoid the use of frost-free freezers, which vary enormously in temperature during the frequent automatic defrosting cycles.
Sweet peppers, tomatoes, cucumbers, aubergines, celery, salads and globe artichokes can all be sown in a frost-free greenhouse.
We brought a new freezer for Christmas one of these new high tech Frost Free models.
As with watermelons, you can either start the seeds indoors a few weeks before the last frost-free date, or plant seeds directly into the garden once the daytime temperatures hit 80 degrees consistently.
Keeping a gardening journal will help you pinpoint which natural events, such as frog calls, the return of particular birds or the leafing out of trees will coincide with frost-free days in your region.
