Woolly Nightshade

Solanum mauritianum

Also known as tobacco weed or nightshade tree, this capsicum-smelling tree of 10m is one of the most rampant weeds found in New Zealand and has made its way on to the top list of worst weeds in the country. The woolly nightshade also produces toxins that poison the soil and causes slow regeneration for future and neighbouring plants.

This rapidly maturing plant has a whitish dusting of hairs over its leaves on branching, soft, woody stems. The flowers are purple with yellow centres and are followed by clusters of yellowy-green berries.

Seeds can be dispersed by birds, especially native pigeons (kereru).

Physical Control

Dig/pull out small plants of up to 60cm tall, and you can then compost. This is easier done in winter.

Chemical control

Option 1

Cut plants down to stumps and then immediately apply Cut ‘n’ Paste Picloram Gel. This gel will be taken into the plants’ root systems and only affect the plants which the gel has been applied to.

Note that if the plants are only cut down, they can regrow back from the stump.

Option 2

Spray in summer/autumn with Weed Weapon Extra Strength, ensure a complete coverage.

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