A greenhouse extends the UK growing season by 4-8 weeks at each end, allowing tender crops like tomatoes, cucumbers, aubergines, and peppers to fruit reliably. Most root vegetables, brassicas, and legumes grow well without one. A basic polycarbonate greenhouse starts from around 435 pounds. Cheaper alternatives include cold frames from 249 pounds and polytunnels from 139 pounds. The decision depends on what you want to grow and available garden space.
Key takeaways
- Greenhouses extend the UK growing season by 4-8 weeks in spring and autumn
- Tomatoes, cucumbers, peppers, aubergines, and melons all crop better under glass
- Root vegetables, brassicas, and legumes grow perfectly well outdoors in the UK
- Cold frames, polytunnels, and cloches offer cheaper alternatives from 139 pounds
- Seed starting indoors is 2-3 weeks faster in a heated greenhouse than on a windowsill
- A 6x8ft greenhouse provides enough space for most hobby growers
greenhouse grow your own vegetables season extension greenhouse growing
Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
