Parsley Piert

Botanical name – Aphanes arvensis

Family – Rosaceae

Aliases – Western-lady’s mantle, parsley breakstone, slender parsley piert

Parsley piert general information

Parsley Piert

Parsley piert is common on under nourished turf, especially if the sward is weak

Parsley piert is an annual weed and is found in all types of habitats, including waste areas, bare ground, grassy pastures and turf. It is particularly troublesome in lawns and turf where thin or bare areas have been allowed to develop, through poor turf care practices. It prefers dry, under nourished soils, so maintaining adequate nutrition and moisture levels is important to discourage this weed.

Aphanes arvensis


Parsley piert reproduces by seed and it forms in a tight, low growing mat that can colonise a lawn or an area of turf very quickly. It can easily tolerate close a low height of cut and close mowing may actually encourage the formation and spread of this weed.

It has various medicinal uses, including the treatment of bladder and kidney infections.

Parsley piert identification

Parsley piert leaf

The small leaves are divided into 3 leaflets

The small leaves (similar to parsley) can measure up to 12mm across and consist 3 leaflets, with each leaflet being cut into 3 or four deeply cut lobes.

The plants produce tiny green flowers at the base of the leaves which are very difficult to spot.

Parsley piert roots

The shallow roots are thick and fibrous

Prevention and control of parsley piert

Encourage a tight, healthy sward of grass with good turf care practices to prevent weeds from invading.

Avoid mowing the grass too low. This places stress on the sward and may lead to thin, weak or even bare areas in the turf. This gives this weed the perfect opportunity to invade.

Maintain adequate levels of soil moisture, especially during hot dry summer.

Ensure the turf receives adequate nutrition with a balanced feed program.

Hand weeding can be very effective in removing parsley piert, as it is mostly shallow rooted and easily removed, especially when the soil is on the damp side.

Parsley piert is difficult to control with chemicals (selective weed killer) as it is resistent to many of the active ingredients used. In most situations a single application will not be enough, further applications may be needed to control the weed. If chemicals are to be used, only treat the infected area by spot treating the weed, to avoid the unnecessary use of chemicals.

Selective herbicides recommended for the control of parsley piert

Professional products (The user requires the appropriate certificate/s to apply these products)

  • Headland Relay Turf (Mecoprop-p, Dicamba, MCPA)
  • React Ultra (Mecoprop-p, Dicamba, MCPA)
  • Bayer Longbow (Mecoprop-p, Dicamba, MCPA)
  • Barclay Holster XL (2,4-D, Fluroxypyr, Dicamba)
  • Mascot Greenor (Clopyralid, Fluroxypyr, MCPA)
  • Vitax Esteem (2,4-D, Clopyralid, MCPA)

Products available for non-professional use (These products are available from garden centres and DIY stores.)

  • Verdone extra (Clopyralid, Fluroxypyr, MCPA)
  • Resolva lawn weed killer (2,4-D, Mecoprop-p, MCPA, Dicamba)
  • Vitax Lawn Clear (2,4-D, Clopyralid, MCPA)
  • Weedol lawn weed killer (Clopyralid, Fluroxypyr, MCPA)