Crops 12 weeks from sowing. Sow seed singly on edge in 9cm (3½”) pots under glass at 18–21°C (65–70°F) February-May for greenhouse crops or April-May for outdoors. Later pot on plants into large pots, about 25cm (10") in size, or plant them out in a frame/greenhouse or outdoors. (Do not plant in cold frames until May.) Maintain night temperatures of 16–18°C (60–65°F). For standard greenhouse varieties, remove male flowers leaving the female ones (distinguished by swelling on stem behind petals) from which cucumbers will be produced. For standard outdoor varieties leave on both male and female flowers. ‘All female’ varieties produce virtually 100% female flowers. Harvest July-September.