UK sowing calendar
When to sow edamame in the UK
🫙 Best under glass — greenhouse or polytunnel in most of the UK
Edamame sowing calendar (UK)
| Sow under cover | Apr-May |
|---|---|
| Sow / plant outdoors | May-Jun |
| Harvest | Aug-Sep (into Oct) |
A warm-season crop that is marginal outdoors in much of the UK - it needs a hot, sheltered spot and a good summer to crop well. In cooler regions and the north, grow under cover (greenhouse or polytunnel) for a worthwhile yield. Frost-tender, so never plant out until all risk of frost has passed.
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 edamame.
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When to sow edamame in the UK — FAQs
When should I sow edamame in the UK?
Sow edamame under cover Apr-May, then outdoors may-jun. A warm-season crop that is marginal outdoors in much of the UK - it needs a hot, sheltered spot and a good summer to crop well. In cooler regions and the north, grow under cover (greenhouse or polytunnel) for a worthwhile yield. Frost-tender, so never plant out until all risk of frost has passed.
Can you sow edamame outdoors in the UK?
Edamame is tender and largely greenhouse-only in the UK — outdoors it is marginal and only worth trying in the warmest, most sheltered spots. A warm-season crop that is marginal outdoors in much of the UK - it needs a hot, sheltered spot and a good summer to crop well. In cooler regions and the north, grow under cover (greenhouse or polytunnel) for a worthwhile yield. Frost-tender, so never plant out until all risk of frost has passed.
When is edamame ready to harvest in the UK?
Edamame is typically harvested Aug-Sep (into Oct) in the UK, depending on your sowing date, cultivar and region.
Is it too late to sow edamame?
It depends on the month and your region. Edamame has a UK outdoor window of may-jun; 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.