Yellow sweet clover

Melilotus officinalis

Layer 4 · Herbaceous
Nitrogen fixer

Status by region

No restrictions recorded in the lists we checked.

Checked against the European Union list (Regulation 1143/2014) · Portugal's national invasive species list (Decreto-Lei 92/2019).

Information based on the cited sources, not legal advice — always confirm your local rules.

About

Native to Eurasia, it is an erect biennial legume frequently visited by bees. It fixes atmospheric nitrogen and improves the structure of compacted soils with its deep roots.

It can be planted now — September is one of the best months.

See which trees yellow sweet clover grows well with

These trees share this species' soil and climate — the pairing is inferred from conditions, not from a guild we have already seen.

No account needed.

Needs

Water: Low
Light: Full sun
Size: Herbaceous up to 1.5 m
Mature diameter: 0.5 m
Soils: Clay, Loam, Sandy, Limestone
Climates: Atlantic coast, Inland / Continental, Hot, dry Mediterranean, Mountain / cold

Calendar

January
February
March — Planting
April — Planting
May
June — Harvest
July — Harvest
August — Harvest
September — Planting
October — Planting
November
December

Harvest
Planting

Medicinal use: Toxic if poorly dried: coumarin can transform into the anticoagulant dicoumarol; it is used with caution in venotonic infusions.

Where to buy

Central trees worth considering

May work well together — same soil and climate, complementary layers. We have not seen this combination in a generated guild yet.

May grow well with

Suggestions worked out from growing conditions — same soil and climate, complementary layers and functions. These are not observed guilds; treat them as a starting point to try on your own land.