vegetable
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Marsh Samphire

Salicornia europaea

Marsh samphire — that crunchy, salty 'sea asparagus' served with fish — can be grown at home with a bit of effort. It needs salt water and gritty, free-draining compost; mix horticultural sand and compost 50:50 and water with seawater (or 35g sea salt dissolved in 1 litre of water). Sow seed in March or April under cover at 18–22°C; germination is erratic. Plant out into trays sitting in shallow saltwater after frosts. Harvest succulent tips from June to September by snipping with scissors — leave the woody bases. An annual, so save seed from late flowers for next year. A genuinely unusual crop that solves the problem of what to do with that patch of poor sandy soil.

Plan where to grow Marsh Samphire using our vegetable garden planner.

SunlightFull sun
WateringHigh
Height25cm
Spacing10cm
Germination14–21 days (erratic)
Sowing MethodUnder cover
Frost HardinessHalf-hardy
Sowing DepthSurface sow

When to Sow Marsh Samphire

Sow marsh samphire in March, April.

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Sowing months

Time to Harvest Marsh Samphire

Expect to harvest approximately 3 months after sowing.

Expected Yield

A seed tray yields enough tips for several meals each summer.

Common Problems with Marsh Samphire

Poor germination

Seed is naturally erratic. Sow thickly, keep at 18–22°C and don't give up — seedlings can appear over several weeks.

Plants collapsing

Without salt, samphire weakens and dies. Water with weak saltwater (1–3% salinity) once seedlings are 5cm tall and increase strength gradually.

Woody, fibrous stems

Pick young tips regularly — once stems flower they turn woody. Stop harvesting in September and let a few plants set seed for next year.

Plan your marsh samphire in the allotment planner

Drag and drop plants onto your plot and get personalised sowing reminders.

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