Black Medic


Family: Fabaceae - Genus: Medicago - Species: M. lupulina

Other names: Black Medick, Hop Clover, Yellow Trefoil

Quick facts

Uses
  • Wildlife
  • Soil builder
Edible parts
None
Type
annual herb
Flowers
Feb–Sep
Height
15–45 cm
Native to
Europe and Asia
Habitat
lawns, roadsides, dry fields
When it flowers 4,326 photos of it in flower across North America, by month, from iNaturalist, as of October 2026
Observations in flower by month
MonthObservations
January63
February157
March258
April405
May949
June1255
July547
August307
September210
October95
November53
December27

Black medic is the little yellow-flowered plant that most people walk past and assume is a clover. It's in the same family, but it's a different plant. Look at the seed pods: they turn black as they ripen, which is where the name comes from.

You'll find it in lawns, on gravel paths and in dry, poor soil where little else will grow.

How to spot it

  • Leaves have three oval leaflets like a clover. Look closely and the middle one sits on its own short stalk, and each leaflet ends in a tiny point.
  • Flowers are bright yellow, packed into tight, round heads about the size of a pea.
  • Seed pods are small, curled and turn black when ripe.
  • It grows low and spreading, often forming a loose mat.

What it's good for

Mostly for the soil and the bees. It fixes nitrogen like other legumes and gives bees something to visit in places that look barren. Farmers sometimes value it as grazing for livestock. People don't usually eat it.

Don't confuse it with

Hop clovers have similar yellow heads. Their dead flowers stay on the head and turn brown, making it look like a tiny hop. Black medic leaflets have that small point at the tip; hop clover leaflets don't.

Gallery


Where it grows


All year

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Fewer records More records

Each hexagon shows how many times Black Medic has been recorded there, from herbarium specimens, surveys and iNaturalist photos. Gaps can mean nobody has looked, not that the plant is absent.