UK gardeners can sow tomato seeds indoors from mid-February to mid-March at 18-21C. Greenhouse-grown cordon varieties like Shirley and Alicante produce 3-5kg of fruit per plant between June and September. Outdoor bush types such as Tumbling Tom yield 2-3kg per plant. Blight is the main disease risk for outdoor crops, peaking in July and August. Regular watering and high-potash feeding from first fruit set are essential for a good harvest.
Key takeaways
- Sow seeds indoors mid-February to mid-March at 18-21C for 7-14 day germination
- Greenhouse tomatoes produce 3-5kg per plant, outdoor bush types yield 2-3kg
- Feed twice weekly with high-potash fertiliser once the first truss sets fruit
- Blight is the biggest disease risk for outdoor UK tomatoes, peaking July to August
- Consistent watering prevents blossom end rot, the most common growing problem
- Choose UK-bred varieties like Gardener's Delight and Shirley for reliable crops
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Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
