UK sowing calendar
When to sow brussels sprouts in the UK
Brussels sprouts sowing calendar (UK)
| Sow under cover | Feb-Apr |
|---|---|
| Sow / plant outdoors | Mar-Apr sow / May-Jun plant out |
| Harvest | Oct-Mar |
Fully hardy and actually sweeter after a frost. Start in modules under cover Feb-Apr (or direct-sow in a seedbed Mar-Apr), then plant out May-Jun into firm, well-firmed soil to stop the sprouts 'blowing' open.
UK timing runs on the last-frost date, not a USDA zone. Most of Britain sees its last frost around mid-May, with the north and exposed inland gardens a week or two later and the mild south-west and coast earlier. Tender crops start under cover and only go out once frost has passed; hardy crops can be direct-sown as soon as the soil is workable.
Timing aligned with the RHS grow-your-own guide for brussels sprouts.
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When to sow brussels sprouts in the UK — FAQs
When should I sow brussels sprouts in the UK?
Sow brussels sprouts under cover Feb-Apr, then outdoors mar-apr sow / may-jun plant out. Fully hardy and actually sweeter after a frost. Start in modules under cover Feb-Apr (or direct-sow in a seedbed Mar-Apr), then plant out May-Jun into firm, well-firmed soil to stop the sprouts 'blowing' open.
Can you sow brussels sprouts outdoors in the UK?
Yes — sow or plant brussels sprouts outdoors mar-apr sow / may-jun plant out. Wait until after the last frost (around mid-May, later in the north) for anything tender.
When is brussels sprouts ready to harvest in the UK?
Brussels sprouts is typically harvested Oct-Mar in the UK, depending on your sowing date, cultivar and region.
Is it too late to sow brussels sprouts?
It depends on the month and your region. Brussels sprouts has a UK outdoor window of mar-apr sow / may-jun plant out; northern and exposed gardens run a week or two behind the south. Open Growli and tell it your postcode for timing tuned to your own last-frost date.