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Watch Monty Don's video demonstration of how to sow spinach seeds, with advice on the ideal location, soil preparation and spacing.springMore advice on growing vegVideo advice on sowing salad leavesSow lettuce seeds in gutteringHow to sow seeds

Chris Beardshaw demonstrates how to prune an old viburnum, removing sideshoots and woody growth to reinvigorate the plant and encourage flowering.springMore advice on pruning plantsHow to prune shrub rosesAdvice on pruning techniquesHow to summer

the growing conditions to discourage moss and help the grass fight back. Encourage the grass to grow vigorously by feeding it and avoiding mowing too closely. In autumn and spring, scarify the lawn with a spring-tine rake to remove any moss. On compacted soils

Plant summer bulbs, such as liatris, begonia, gloxinia, gloriosa, canna, eucomis and agapanthus Maintain frost-free conditions by installing a thermostatically controlled electric fan heaterBring pots of spring bulbs into the greenhouse to encourage

for early sowingsCarry on sowing seeds in pots or trays in the greenhouse, ready to transplant later, including Brussels sprouts, spring cabbage and onions

Pruning roses keeps them in shape and encourages more flower growth and healthier plants. Cut weak shoots right back to promote stronger growth from the base.Rose bushSecateursautumn or spring20 minutesRemove dead shoots and the tips of stems

Winter pruning wisteria encourages the development of short-flowering spurs that carry the flowers in spring. The long vigorous shoots produced on the wisteria need to be cut back at least twice during the year, so you'll need to repeat this pruning

In mid-spring, 2mm-long, greenish-brown, adult bay suckers emerge from overwintering. They feed on young bay leaves, turning them yellow and making the edges thicken and curl. The females then lay eggs under the curling edges and the new, young grey

at different times: the small from February to April and again in late-summer, the large in April and May. This means the caterpillars can be busily munching away from early spring through to autumn.Caterpillars eating holes in the outer and inner leaves

established and spread.Cut back stems of established plants, and treat the regrowth in spring and summer with brushwood killer. Treat the foliage of seedlings and young plants with a systemic herbicide, which will kill the roots as well as the top growth