How to Grow Tomatoes Outdoors (UK Guide)

Growing tomatoes outdoors in the UK is entirely possible and can produce fantastic flavour. However, outdoor growing requires careful variety choice and attention to weather conditions.

This guide explains how to grow tomatoes outdoors successfully in the UK climate.

For the full tomato hub, see TOMATOES: HOW TO GROW, BEST VARIETIES, PROBLEMS & EXPERT TIPS (UK GUIDE).

Are Outdoor Tomatoes Worth Growing in the UK?

Yes — but with planning.

Outdoor tomatoes:

  • Often have excellent flavour
  • Require less equipment
  • Are ideal for smaller gardens

However, they are more exposed to:

  • Rain
  • Cool nights
  • Blight risk

Best Varieties for Outdoor Growing

Choose:

  • Early cropping varieties
  • Bush (determinate) types
  • Blight-resistant varieties
  • Smaller fruiting tomatoes

Cherry and salad tomatoes perform best outdoors.

See BEST TOMATOES FOR OUTDOOR GROWING UK for recommended varieties.

When to Plant Tomatoes Outdoors

Only plant outdoors:

  • After the last frost (usually mid to late May)
  • When night temperatures remain above 8°C

Planting too early risks stunted growth.

Choosing the Right Location

Outdoor tomatoes need:

  • Full sun (at least 6–8 hours)
  • Shelter from strong wind
  • Free-draining soil
  • A warm microclimate

South-facing walls are ideal.

Preparing the Soil

Before planting:

  • Add well-rotted compost
  • Improve drainage
  • Avoid waterlogged areas

Tomatoes thrive in rich, fertile soil.

Supporting Outdoor Tomatoes

Bush varieties may need:

  • Light staking
  • Small cages

Cordon varieties need:

  • Canes
  • Strong ties
  • Regular tying in

Wind protection is essential.

Watering Outdoor Tomatoes

Water:

  • At the base
  • Deeply but not frequently
  • More during dry spells

Avoid overhead watering — wet leaves increase blight risk.

⭐ Recommended Products — Garden & Allotment Essentials for March

March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.

Seed Trays, Modules & Propagation Kits — perfect for tomatoes, brassicas, lettuce, onions and flowers. 👉 Click here to see top options

Heated Propagators, Heat Mats & Grow Lights — improves germination and prevents leggy seedlings during cold nights. 👉 Click here to see top options

Seed & Cutting Compost — essential for healthy seedlings and strong root growth. 👉 Click here to see top options

Garden Fleece & Plant Protection Covers — protects seedlings, potatoes and early plantings from late frost. 👉 Click here to see top options

Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉 Click here to see top options

Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉 Click here to see top options

Pressure Washer (Greenhouse & Patio Cleaning) — clean patios, paths and greenhouses before planting. 👉 Click here to see top options

Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉 Click here to see top options

Feeding Outdoor Tomatoes

Start feeding once flowers appear.

  • Use tomato feed weekly
  • Continue until fruiting slows

Outdoor plants benefit from consistent feeding.

Preventing Blight Outdoors

Blight is the biggest challenge for UK outdoor tomatoes.

Reduce risk by:

  • Improving airflow
  • Removing lower leaves
  • Avoiding leaf wetting
  • Growing resistant varieties

If blight appears, remove affected foliage immediately.

See TOMATO BLIGHT UK GUIDE for detailed prevention.

Managing Wet Summers

In wet weather:

  • Consider temporary rain covers
  • Increase spacing between plants
  • Improve airflow

Wet leaves and humidity encourage disease.

Harvesting Outdoor Tomatoes

Outdoor tomatoes usually ripen:

  • July to September
  • Earlier in southern UK
  • Later in northern regions

Harvest regularly to encourage further fruiting.

Final Thoughts: Outdoor Tomato Growing in the UK

Outdoor tomatoes require:

  • Careful variety choice
  • Proper timing
  • Vigilance against blight
  • Consistent feeding

While greenhouse growing is more reliable, outdoor tomatoes can produce excellent flavour when managed properly.

Return to TOMATOES: HOW TO GROW, BEST VARIETIES, PROBLEMS & EXPERT TIPS (UK GUIDE) for complete tomato guidance.

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