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Mercury Bay Weed

Dichondra repens

Also called Tom Thumb, Creeping Dichondra, Dichondra, Kidneyweed, Wonder Lawn

In Singapore: Kidney Weed, Kidney Grass, Dewdrop Lawn, Wonder Lawn, Mercury Bay Weed (Grown in Singapore)

Mercury Bay Weed
Photo: Harry Rose from South West Rocks, Australia, CC BY 2.0

Dichondra repens is a low, creeping perennial with kidney-shaped, silky-hairy leaves, grown mainly as a lawn substitute or groundcover. It thrives in moist, fertile soil and tolerates light foot traffic better than many lawns.

Family
Convolvulaceae (Morning-glory family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Keep soil evenly moist during establishment, then water deeply when the top of the soil starts to dry.
Soil
Moist, fertile loam or clay-based soil with good drainage.
Temperature
15–30 °C; protect below 5 °C
How easy
Easy
Native range
Mascarenes, S. & E. Australia, New Zealand
Climate
subtropical

About

Dichondra repens, commonly known as kidney weed, Mercury Bay weed, tom thumb, or yilibili in the Dharawal language, is a species of flowering plant in the family Convolvulaceae and is native to Australia, New Zealand, and the Indian Ocean islands, Mauritius, Réunion and Rodrigues. It is a perennial, herb with kidney-shaped to round leaves and small, greenish-yellow, star-shaped flowers.

How to grow it

This species is cultivated as an ornamental plant, and can be used as a lawn substitute or groundcover in gardens.

Safety

D. repens uses acylsugars as a chemical defence. Among these are acylated resin glycosides which synergize with antibiotics to reverse bacterial multidrug resistance (MDR).

Where it grows

Kidney weed is widespread in all Australian States and New Zealand, and occurs on Mauritius, Réunion and Rodrigues in the Indian Ocean. It grows in forest, woodland and grassland on clay or clay-based soils that are medium to high in nutrients, and is a weed of lawns. Associated species in New South Wales are river peppermint (Eucalyptus elata), thin-leaved stringybark (E. eugenioides), woollybutt (E. longifolia) and snow-in-summer (Melaleuca linariifolia).

Other Dichondra plants

Silver ponysfoot · Carolina ponysfoot · Asian ponysfoot · Ponysfoot

[Contains information from Leaf Area Index (LAI) and Heritage Trees from data.gov.sg (National Parks Board), made available under the terms of the Singapore Open Data Licence version 1.0]

Text excerpted from the Wikipedia article Dichondra repens by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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