Answer: It is still relatively early in the courgette calendar and there is still plenty of time to have a glut!
You can always tell, as our tea room at Wisley starts to fill with excess produce from veg-growing staff.
Courgettes are hungry and thirsty plants so water them well as you are doing, and apply a tomato fertiliser according to the label instructions.
They should go on producing fruit until the humidity in autumn causes powdery mildew to finish off the plants.
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