London & the South East cities Vegetable Planting Calendar
Sowing and planting dates for vegetables in London & the South East cities, worked out from the region's average frost dates. Last spring frost: late April to early May. First autumn frost: November.
Hardy vegetables
These tolerate cold and can be sown from a few weeks before the last frost, as soon as the soil is workable. Some are also worth starting under cover for an earlier crop.
| Vegetable | Start indoors | Sow / plant outdoors | Last sow for autumn |
|---|---|---|---|
| Beetroot | - | 3 Apr | 31 Aug |
| Bok Choy | 3 Apr | 17 Apr | 5 Sep |
| Broad Beans | 1 May | 3 Apr | 1 Aug |
| Broccoli | 20 Mar | 17 Apr | 21 Aug |
| Brussels Sprouts | 20 Mar | 17 Apr | 17 Jul |
| Cabbage | 20 Mar | 10 Apr | 16 Aug |
| Carrots | - | 10 Apr | 16 Aug |
| Cauliflower | 20 Mar | 17 Apr | 16 Aug |
| Celery | 20 Feb | 8 May | - |
| Corn Salad | 1 May | 3 Apr | 26 Aug |
| Endive | 27 Mar | 17 Apr | 27 Jul |
| Fennel | 3 Apr | 17 Apr | 6 Aug |
| Kale | 20 Mar | 10 Apr | 31 Aug |
| Kohlrabi | 3 Apr | 17 Apr | 31 Aug |
| Leeks | 20 Feb | 17 Apr | 27 Jun |
| Lettuce | 3 Apr | 3 Apr | 5 Sep |
| Mustard Greens | - | 17 Apr | 10 Sep |
| Onions | 20 Feb | 3 Apr | - |
| Parsnips | - | 17 Apr | 27 Jun |
| Peas | - | 20 Mar | 26 Aug |
| Potatoes | - | 17 Apr | - |
| Radicchio | 27 Mar | 17 Apr | 16 Aug |
| Radishes | - | 3 Apr | 27 Sep |
| Rocket | - | 17 Apr | 15 Sep |
| Sorrel | 20 Mar | 10 Apr | 26 Aug |
| Spinach | - | 20 Mar | 10 Sep |
| Spring Onions | - | 17 Apr | 26 Aug |
| Swede | - | 1 May | 22 Jul |
| Swiss Chard | 3 Apr | 17 Apr | 31 Aug |
| Turnips | - | 17 Apr | 5 Sep |
| Watercress | 10 Apr | 17 Apr | 26 Aug |
Tender vegetables
These are damaged by frost. Start them under cover and plant out only once the risk of frost has passed in your own garden. Harden plants off over a week or so before they go outside.
| Vegetable | Start indoors | Sow / plant outdoors | Last sow for autumn |
|---|---|---|---|
| Aubergine | 6 Mar | 15 May | - |
| Courgette | 10 Apr | 8 May | 5 Sep |
| Cucumbers | 10 Apr | 8 May | 31 Aug |
| Edamame | 1 May | 15 May | - |
| French Beans | - | 1 May | 31 Aug |
| Melons | 10 Apr | 15 May | - |
| New Zealand Spinach | 3 Apr | 15 May | - |
| Peppers | 6 Mar | 15 May | - |
| Pumpkins | 10 Apr | 8 May | - |
| Summer Squash | 10 Apr | 8 May | 3 Sep |
| Sweet Corn | - | 8 May | - |
| Sweet Potatoes | - | 22 May | - |
| Tomatoes | 20 Mar | 8 May | - |
| Winter Squash | 10 Apr | 8 May | - |
"Sow / plant outdoors" is the transplant-out date where a crop is started indoors, otherwise the direct-sowing date. "Last sow for autumn" is the latest sensible sowing for a crop to mature before the first autumn frost.
Reading these dates
These are guides based on London & the South East cities's approximate average frost dates, not a forecast. Aspect, altitude, shelter and the weather in any given year can shift them by two weeks or more, so treat them as a starting point and adjust to your own plot. Sow a little later in a cold spring and keep horticultural fleece ready for a late frost.