Sow them around four weeks before your last frost date, and keep them somewhere warm until the risk of frost has passed.
Courgettes are tender plants, so they will not tolerate cold. They are also fast-growing. Sow them around four weeks before your last frost date, and keep them somewhere warm until the risk of frost has passed. Give them a large growing space as they can make very large plants. This will help them be more productive too. Follow this simple guide for more information on how to grow courgettes.