Black medic
Black Medic (Medicago lupulina) is also known as Yellow Trefoil, Hop Clover or Black Clover. It is an aggressive, prostrate Summer annual, and forms a dense, mat across turf.
Jerry Spencer 
Black Medic (Medicago lupulina) is also known as Yellow Trefoil, Hop Clover or Black Clover. It is an aggressive, prostrate Summer annual, and forms a dense, mat across turf.
It germinates in the late Spring, and then continues to grow through the heat of the Summer. Once the weather cools down it dies off.
Black Medic only reproduces from seed.
After you read this, you will be able to:
- Identify Black Medic, Hop Clover, Black Clover or Yellow Trefoil.
- Know what conditions favour Yellow Trefoil or Hop Clover.
- Know the best cultural and chemical controls for Black Medic or Hop Clover.
Although not directly toxic to livestock, if they eat enough of it Black Medic causes serious gastric issues.
it is often mistaken for White Clover or Yellow Wood Sorrel.
Differences between Black Medic and Other Trifoliate Weeds.
You find Black Medic (Medicago lupulina) and White Clover (Trifolium repels) in similar sites, and you often find them together in turf. It is also often mistaken for Creeping oxalis.
