In Europe and Asia, BlackMedic is often treated like a salad green. If you’ve identified your BlackMedicweed with 100% accuracy, you may be interested in hand-pulling it when young... BlackMedic (Medicago lupulina). Photo: Karan A. Rawlins, University of Georgia, Bugwood.org. Updated: . General description. Blackmedic is usually first noticed when it... Blackmedicweeds are also known as black clover, hop medic, or yellow trefoil.BlackMedicweeds grow from a branched central taproot that can reach deep underground. BlackMedic is a summer annual broadleaf weed that can also behave as a perennial broadleaf weed in certain climates and soil conditions. Blackmedicweeds indicate dry soils, nitrogen deficiencies, and compaction. It grows as a dense mat, thanks to its creeping stems. Control: Mulch to prevent blackmedic in gardens. Pull or dig out weeds by hand or use an herbicide. What is BlackMedic and Why Is It in My Lawn? Blackmedic (Medicago lupulina) is a broadleaf weed that acts as a summer annual in most regions. It’s easily identified by its sets of three... In other words, blackmedicweed is an indicator that your soil has problems.On the chemical side, you can use non-selective weed killers to kill blackmedic. Facts about BlackMedicThis weed is a legume found often in pastures since it does well in dry or nutrient deficient soils.BlackMedic is found on every continent except Antarctica. Despite being a weed itself, blackmedic does an excellent job of keeping other weeds away from your lawn by outcompeting them for resources.