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Sweetcorn Lark is a tendersweet variety giving superior sweetness with a softer, less chewy texture than supersweets, making kernels more pleasurable to eat as well as easier to digest. Improved germination adds to the appeal. Sweetcorn Lark can be also grown with other varieties, so there is no need to isolate. Requires a fertile soil in a sunny position. Seeds are in the RHS Vegetable Collection."Sow seeds April to May 4cm (1½ inches) deep in 7.5cm (3 inch) pots of free draining compost. Place in a propagator or seal container inside a polythene bag and place at 18-20C (64-68F) until after germination which takes 7 to 10 days. Do not exclude light as this helps germination.Seeds can also be sown direct outdoors once the soil has warmed, sow 2 seeds 5cm (2 inches) deep, 23cm (9 inches) apart, and in rows 45cm (18 inches) apart. Thin out to the strongest seedling."Gradually acclimatise indoor grown plants to outdoor conditions for a few days before planting out after all risk of frost.Keep well watered, and mulch during dry periods.

A mid-season supersweet type, Sweetcorn Ovation F1 produces large cobs of 20-23cm (8-9in) long, filled to the tip with 12-14 rows of delicious kernels with a delicious sugar-sweet flavour. Sweetcorn Ovation seeds in the RHS Vegetable Collection are vigorous plants which give impressive crops.Sow seeds individually, 2cm (¾in) deep in 5cm (2in) pots of good seed compost to avoid root disturbance. Sow at 15C (59F) under glass or in a propagator. Seeds can also be sown direct outside in warm soil from mid May.Grow on steadily and gradually harden off prior to planting out from late May, or once frost risk has passed. Grow in a block for best pollination, allowing 38cm (15in) between plants each way.

Increasingly popular vegetable for early summer to autumn harvesting. Once the central head has been cut, there are plenty of tender sideshoots over several weeks if cut regularly.Sow seed thinly 6mm (¼in) deep, and cover with a sprinkling of dry vermiculite or finely sieved compost. Place the seed and tray in a propagator or seal inside a polythene bag and keep at around 18-21?C (65-70?F) until seeds germinate. This will take about 4-7 days.When the seedlings are large enough to handle, transplant into 7.5cm (3in) pots or multi-cell trays. Plant out once the plants are approximately 10-15cm (4-6in) tall, into well-prepared soil allowing 38cm (15in) apart each way. Alternatively, sow thinly in a well-prepared seedbed, 1cm (½in) deep, and plant out when large enough to handle allowing 38cm (15in) apart each way. Sow successionally for extended harvest.To continue the organic life cycle of these seeds, gardeners should follow recognised organic growing methods, avoiding the use of artificial fertilisers and pesticides.

Well known, popular gardener variety, producing high yields of dark green, glossy, slightly speckled fruit."Sow seeds from mid-April to early June, 20mm (½in) deep in 7cm (3.5in) pots or cells, using multi-purpose compost. Place in a propagator at 20-25°C (68-77?F) until germination which takes 7-10 days. Seeds can also be sown outdoorsin warm soil from May. It is tolerant to Yellow Mosaic Virus and Powdery Mildew."Plant out into rich, moist, well prepared soil once frost risk has passed, 60cm (23in) apart each way. Keep well watered and harvest regularly to ensure continuous cropping.To continue the organic life cycle of these seeds, gardeners should follow recognised organic growing methods, avoiding the use of artificial fertilisers and pesticides.

Very quick growing salad onion. Sow Spring Onion White Lisbon in succession for a continuous crop all spring, summer and autumn. This customer favourite is also the best variety for overwintering - make a late sowing in September and see!Sow March to August, every 3 weeks for continuous crops. Sow thinly in either narrow or broad drills 13mm deep, allowing 23cm between drills. Popular and reliable for successional sowings throughout the season.No thinning is necessary. Keep watered for best quality crops. Delicious when young, becoming more pungent as the stems enlarge and start to bulb.HARVESTING: May to October, later sowings may remain through to December if weather remains mild.