My only surviving courgette is producing double headed flowers with a very wide stem, like two stems stuck together. Why is this and will I get any courgettes ????
Once the plants have started to crop, the rate at which they form fruits is phenomenal. If you want to ensure maximum cropping, you need to harvest courgettes and marrows frequently; three times a week in the height of the season. The correct size at which the fruits should be harvested depends partly on the variety, but as a rule, courgettes are ready when about 10cm (4in) long and marrows when 20cm to 30cm (8in to 12in).