Procumbent pearlwort is a low growing perennial weed, that is very common in managed turf. Pearlwort forms as a low growing mat, it takes advantage of bare ground and weak areas in the lawn.
It is also a difficult weed to spot as it blends in with the grass, especially in fine turf.
It spreads via seed and its branched root system and is very tolerant of close mowing.
The tiny leaves are very fine and narrow, with a thick cuticle which enables this weed to resist most herbicides .
The tiny white flowers are often difficult to spot as they are quite inconspicuous. Procumbent pearlwort flowers between April and September.
Procumbent pearlwort will grow on most types of soil. However it prefers very wet soil, it is often on turf that is frequently irrigated, where it is a good indicator the the soil is too wet.
- Hand weeding can prove effective in removing this turf weed.
- Avoid over-watering the lawn during the summer months as pearlwort favours wet soils.
- Encourage good grass coverage with good turf care practices to help eliminate this and other weeds from invading.
- Avoid stressing the lawn with very close mowing. This can lead to a weak sward and allow pearlwort the opportunity to get established.
Pearlwort is a difficult weed to control, as it moderately resistant to many selective weed killers. In almost all cases two of three treatment will be required to eliminate this weed from the lawn.
Procumbent pearlwort images
Recommended herbicides for the control of procumbent pearlwort
Professional products (All operators must be trained and certificated in using and applying any Ministry Approved professional product)
- ICL Enforcer (2,4-D, Dicamba, Mecoprop-p, MCPA)
- ICL Esteron (2,4-D, Furosulam)
- Barclay Holster (Fluroxypyr, 2,4-D, Dicamaba)
- Hysward-P (Mecoprop-p, Dicamba, MCPA)
- Bayer Longbow (MCPA, Dicamba, Mecoprop-p)
- Mascot Junction Turf (Flurosulam, 2,4-D)
- Mascot Crossbar (Fluroxpyr, 2,4-D, Dicamaba)
Products available for non-professional use (These products are available from garden centres and DIY stores and do not require any training or certification for use and application.)
- Vitax lawn Clear (Clopyralid, 2,4-D, MCPA)
- Resolva Lawn Weed Killer (Mecoprop-p, Dicamba)
Tips for successful weed control using selective herbicides
- Treat weeds when growth is strong, this is usually in May and June.
- Don’t mow the lawn 3 days prior and 3 days after the treatment, to allow for maximum uptake of the chemical.
- Spray when the leaf/foliage is dry, as this reduces runoff and allows the chemical to stick to the weed.