Courgette Seeds - British Summertime British Summertime is the British bred courgette that will yield an abundance of fruit even in cold weather conditions. British bred and perfect to grow in a British Summer (dull and wet!) One of the earliest fruiting courgettes. The plant habit is an exceptionally open bush which improves air circulation, reducing the incidence of disease and fruit rot, allowing for the rapid picking of top-quality dark green fruit. Spine-free, so no scratched hands when you harvest. Sow April-June, plant June-Aug, Harvest July-Oct.