Manuka is a prolific scrub-type tree and is often one of the first native species to regenerate on cleared land. It is typically a shrub growing to 2–5 m tall, but can grow into a moderately sized tree, up to 15 m in height.
It is evergreen, with dense branching and small leaves 7–20 mm long and 2–6 mm broad, with a short spine tip. The flowers are white, occasionally pink, 8–15 mm (rarely up to 25 mm) diameter, with five petals and seen from late spring to early summer.
For control of Manuka apply Grazon Extra Herbicide at a rate of 500 mL/100 L of water and add Pulse® Penetrant at 200 mL/100 L of spray. Thoroughly wet foliage, stems and soil around the base of the plants.
Where slashing has resulted in regrowth, allow at least one year’s regrowth or until regrowth has reached 1 m tall before treatment.
Herbicides for Control of Manuka
|Method of application
|Grazon™ Extra Herbicide
||500 mL/100 L of water + Pulse®
#Note: Preferred product option in bold. *Consult label for details of growth stage and use, especially where range of rates is given.