After potting on, grow squash plants in a warm, sunny spot with plenty of space (preferably 90cm or 3ft apart). Plant out once all risk of frost has passed, ideally into rich, well-drained soil improved with compost or manure.
Water regularly, especially in dry spells, and feed every 10–14 days with a high-potash fertiliser once flowering starts. Pinch out growing tips to encourage branching if space allows. Keep weeds down and mulch around the base to conserve moisture.
Harvest when the fruits are mature and the skin is hard. Cut the last of the fruits before the first frosts leaving some stalk attached and they will store for several months somewhere dry and cool.