Tomato 'Sweetest Duo' - SeedsSolanum lycopersicum L.

For greenhouse cultivation: sow from February to March.

For outdoor cultivation: sow from March to April.

Sow seeds on the surface of a good, free-draining, damp, seed sowing mix and cover with a fine sprinkling of compost or vermiculite. Place seed trays in a propagator at a constant temperature of around 15-20C (59-68F) until after germination, which takes 7-14 days. When seedlings gain 2 true leaves, transplant into individual 7.5cm (3") pots of compost and grow on at a minimum temperature of 15C (59F).

When growing in a heated glasshouse tomato plants may be transplanted at the end of May or when the first flowers are showing, if earlier. Allow 3 plants per growbag, or one per 25cm (10") pot, or plant tomatoes directly into the greenhouse soil.

When growing tomatoes outdoors, wait until all risk of frost has passed before transplanting tomatoes. Gradually acclimatise them to outdoor conditions over 7 - 10 days before planting out from early June when tomato plants are 20cm (8") tall. Choose a sheltered position in full sun on fertile, reliably moist, well drained soil, and transplant at a distance of 60cm (24") apart. Drive a (5') cane into the soil adjacent to each plant to support them as they grow, and tie each main stem to its support with soft garden twine.

Water tomato plants frequently, to keep the compost evenly moist. Feed tomatoes regularly with a high potash plant food once the first truss of fruit has formed.

Tie the main stems to their supports and remove any sideshoots that develop between the main stem and the leaf stems. Once the plant has produced 6 or 7 trusses, pinch out the top of the main stem. This process of 'sideshooting' and 'stopping' will increase the availability of light and air movement around the developing fruit, and focus the plants energy on producing a good crop of high quality tomatoes. Tomatoes can be harvested as they ripen from July to September.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.