Yates Hydrocotyle Killer - Concentrate
An effective selective weedkiller for the control of hydrocotyle, creeping oxalis, broadleaf weeds (including daisies and clover) in grass lawns.
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Oxalis spp.
Horned oxalis (Oxalis corniculata)
What is Oxalis?
Horned oxalis (Oxalis corniculata) has yellow flowers and tiny clover-ish heart-shaped leaves, varying in colour from green to purplish-green. Ground-hugging stems form root nodes wherever they touch the ground. Roots are mostly fibrous, but sometimes small taproots form as well. Horned oxalis spreads via these rooting stems and also from seeds. Seeds are easily spread by movement of soil, water and lawn mowers. Horned oxalis is a common, persistent lawn weed - because the stems creep underneath lawn grass, it's quite hard to eradicate.
Creeping oxalis (Oxalis exilis) is a yellow-flowered NZ native that has similar, but smaller, leaves and a mat-forming habit. It's widespread through NZ as a lawn and pasture pest.
Pink oxalis (Oxalis corymbosa) has large, dark green heart-shaped leaves, with clusters of small pink flowers. Active growth begins in spring. It grows in clumps, from dense bunches of small brown bulbs (bulbils). Mature plants have dozens of these bulbils attached to the parent bulb, which allow the weed to spread when soil is disturbed.
Soursob (Oxalis pes-caprae) aka Bermuda Buttercup, has clover-like leaves on unbranched stems and bright yellow flowers. At the base of the stems is a dense cluster of small bulbs (bulbils).
Clover and burr medic weeds look similar to oxalis, so they're commonly mistaken for one another.
How to Control Oxalis
Yates Hydrocotyle Killer is an effective solution to remove oxalis species from lawns, without harming lawn grass. As there are likely to be seeds or bulbils remaining in the soil, repeat spray during the warmer months to prevent new oxalis plants from getting established.
In garden beds, spot-spraying with Yates Zero Super Concentrate or Yates Zero Tough weedkiller will control oxalis. Note these products are non-selective, so they will also kill lawn grass. Heavy mulching also helps to eliminate oxalis from gardens.
Areas Impacted
- Lawns
- Garden Beds
- Pots
- Paths
- Paving
Yates Zero Tough Heavy Duty Weedkiller - Ready to Use
Extremely effective at controlling the toughest, hard-to-kill and invasive weeds and grasses (such as ivy, gorse & bamboo) - roots and all.
Yates Zero Super Concentrate Weedkiller
An extremely effective, easy and economical way to control weeds and grasses. Kills weeds, roots and all.
Yates Zero Rapid 1-Hour Action Weedkiller - Ready to Use
A ready-to-use rapid-acting weedkiller that kills weeds, grasses and moss fast, visible effects are noticeable on most weeds within 1 hour.
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