Cucumbers, a staple in salads, can be cultivated both in a glasshouse and outdoors. While the long green varieties found in stores require a heated glasshouse, other types can thrive in your garden or be started earlier with cloches, cold frames, or polytunnels. For gardeners, the Telegraph Improved variety is a top choice, closely resembling traditional glasshouse types. It yields medium-long, dark green fruits and can be grown outdoors, in glasshouses, under polythene tunnels, or in cold frames.
