Category: Broadleaf

Black Medic

This peculiar broadleaf weed is often mistaken for Oxalis or Clover, as it emerges in weak lawn areas and along garden bed edges.

Black Medic Facts:

  • Found in the summer
  • Summer annual
  • Low-growing, typically 2" to 3" tall, but spreading out in 12" to 18" patches
  • Three leaflets and often confused with Clover and Oxalis
  • 1/4" yellow clustered flowers forming at end of stems
  • Flowers eventually produce very small, black seedpods
  • Spreads by seeds

Control Tips:

  • Fairly easy to control. Spray with selective herbicide several times throughout the year, after weeds emerge.
  • Thick turfgrass areas will yield fewer weeds. Fertilize regularly, aerate and overseed each fall.
  • Mowing at 3-4" will encourage a healthy lawn and reduce weed growth. 
  • Irrigate lawn areas regularly so they receive 1-2" of water each week. 
  • Proactive, comprehensive lawn care programs are recommended for best control.

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