UK Growing Guide (RHS Zones)
UK gardening uses RHS hardiness ratings, not USDA zones. The growing season runs March–October. Key challenges are short days and cool summers.
UK climate is mild but cool. Some crops thrive; others struggle.
The Season
| Factor | Value |
|---|---|
| Last frost | March-May (varies) |
| First frost | October-November |
| Growing season | March-October |
What Grows Well
- Lettuce
- Kale
- Peas
- Beans
- Brassicas
- Root vegetables
- Herbs
What Struggles
- Tomatoes (need greenhouse)
- Peppers (need greenhouse)
- Aubergines (need greenhouse)
- Sweet corn (short season)
- Melons
Planting Calendar
| Month | Action |
|---|---|
| Feb-Mar | Start tomatoes, peppers indoors |
| Mar-Apr | Plant cool-season crops |
| May | Plant warm-season after last frost |
| Jun-Jul | Succession plant |
| Aug-Sep | Harvest, plant fall crops |
| Oct-Nov | Last harvests |
Common Questions
What’s the difference from USDA? RHS uses hardiness ratings, not zones.
Can I grow tomatoes outside? Only in a greenhouse or sunny sheltered spot.
What about peppers? Greenhouse.
Can I grow year-round? With a greenhouse or polytunnel.
What about slugs? Major UK pest. Use beer traps.
What about rain? Protect from too much. Raised beds.