Yellow woodsorrel has clover-like heart-shaped leaflets and small yellow flowers. It spreads by seed pods that pop open.
- Scientific name
- Oxalis stricta
- Type
- Perennial broadleaf
- Most visible
- April–October
How to Identify Yellow Woodsorrel (Oxalis)
- Three heart-shaped leaflets that fold at night
- Small five-petaled yellow flowers
- Upright, okra-like seed pods
- Sour taste
When It Shows Up in Oklahoma Lawns
Grows through warm months in thin turf and beds.
How to Control Yellow Woodsorrel (Oxalis)
- Spot-treat with a selective herbicide labeled for the weed and safe for your grass type, following the label exactly
- Hand-pull before pods form
- Keep turf thick with proper mowing height, watering, and feeding so seedlings can't establish