2 years to reach maturity
This plant has a mild fragrance
More images of Yellow Trefoil
Yellow Trefoil Overview
Medicago lupulina is a pretty summer wildflower that can be found growing in fields and pastures as well as disturbed areas in gardens and lawns. It produces trifoliate leaves around a central stem and in summer a cluster of yellow flowers that develop into black seed pods. Commonly known as Black Clover, Black Medic, Hop Clover and Yellow Trefoil, it spreads out low to the ground only getting to between 15 cm (6") to 80 cm (31") in height. Medicago lupulina thrives in poor soil conditions, but as member of the legume family, its roots contain nitrogen-fixing nodules which over time will improve the soil.
Common problems with Yellow Trefoil
Generally pest and disease free
How to harvest Yellow Trefoil
Collect seed when ripe
How to propagate Yellow Trefoil
Sow seed in situ, germination should occur within a few weeks.
Propagate from seeds or cuttings.
Special features of Yellow Trefoil
Used as a green manure, this plant will increase nitrogen levels in the soil for following crops.
Attracts useful insects
A popular food source for bees, it will attract a range of pollinating insects.
Other uses of Yellow Trefoil
Suitable for coastal conditions.
Can be grown in poor soils as pasture for sheep to graze on.
Grow to capture and release nitrogen into the soil. Dig back into the top 15 cm (6") before the flowers develop.