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Gardening9 min read·February 20, 2025

Growing Tomatoes at Home: From Seed to Harvest

Tomatoes are the most popular home-grown vegetable for good reason — nothing from a shop comes close to the flavour. Here's how to grow them from seed.

Growing Tomatoes at Home: From Seed to Harvest

Homegrown tomatoes taste completely different to supermarket ones. The reason is simple: shop tomatoes are bred for shelf life and appearance; homegrown varieties are bred for flavour.

Choosing a Variety

Cordon (indeterminate) varieties — grow as a single tall stem, require staking and regular removal of sideshoots. Best for greenhouse or a warm sheltered spot. Great flavour.

  • Cherry types: Gardener's Delight, Sungold
  • Beefsteak: Costoluto Fiorentino, Brandywine
  • Bush (determinate) varieties — compact, no pinching required. Better for containers and cooler climates.

  • Tumbling Tom (great for hanging baskets), Maskotka
  • Sowing Seeds

    Sow indoors from late February to late March (UK) or 6–8 weeks before your last frost date (US). Sow in small pots of seed compost, 0.5 cm deep, at 20–25°C. Germination takes 5–10 days.

    Growing On

    Pot on progressively as roots fill each container. Keep on a warm, bright windowsill.

    Planting Out

    Plant outside after the last frost date, when night temperatures stay above 10°C. Harden off first — 7–10 days of gradually increasing outdoor exposure.

    Ongoing Care

  • Water consistently — fluctuating moisture causes blossom end rot and splitting
  • Feed with high-potassium liquid feed (tomato food) once flowering begins — weekly
  • For cordons: pinch out sideshoots weekly; support with canes or string
  • Pinch out the growing tip in late summer (August in the UK) to concentrate energy into the existing fruits
  • Common Problems

    Blossom end rot (black patch at the base of fruit): calcium deficiency caused by inconsistent watering.

    Blight: Brown patches spreading from leaves to stems. Remove affected parts immediately. Grow blight-resistant varieties.

    #tomatoes#vegetables#growing food