UK greenhouse growers get the best results from Sungold (orange cherry, RHS AGM), Shirley (medium, unheated greenhouses), Gardener's Delight (red cherry), and Rosada (plum cherry, RHS AGM). Cordon varieties produce 3-5kg per plant under glass. Maintain 15-30C daytime temperatures and feed twice weekly with high-potash fertiliser from first fruit set. Beefsteak types like Marmande need heated greenhouses above 18C at night.
Key takeaways
- Sungold and Rosada both hold the RHS Award of Garden Merit for flavour and reliability
- Shirley is the best variety for unheated UK greenhouses, cropping at temperatures as low as 13C
- Cordon greenhouse tomatoes produce 3-5kg of fruit per plant from June to September
- Beefsteak types like Marmande and Costoluto Fiorentino need night temperatures above 18C
- Feed twice weekly with high-potash fertiliser once the first truss sets fruit
- Good ventilation keeps temperatures below 30C and prevents greenback and blossom end rot
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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.
