No summer garden should be without cucumbers. They are very easy to grow and are very prolific. Cucumbers can be grown either indoors or out, but if you are looking for the long green types found in shops then a heated greenhouse is a must. Sow indoors 0.5cm (¼in) deep, on edge, in small pots of compost. Water well then place in a warm position, a temperature of 20-25°C(68-77°F) is ideal. Keep moist. Seedlings usually appear in 7-21 days. When plants have developed 3 or 4 leaves, transplant to 12cm (5in) pots and grow on in cooler, but not cold conditions