Tiaki ō Kawau - weed of the month

Kawau’s March Weed of the month: WOOLLY NIGHTSHADE

 

Interesting Facts

  • The berries are poisonous to  humans if eaten, particularly children

  • It has a strong kerosene-like smell

  • Vigorous growing habit- seedlings   established in summer can  produce seeds by autumn!

  • Seeds can remain dormant in the soil and germinate up to 20-30 years later.

  • The dust from the leaves and stems can irritate the skin, eyes, nose, and throat - Wear gloves and a mask if undertaking woolly nightshade control for long periods. 

Woolly Nightshade

Also Known as

  • Tobacco weed

  • Flannel leaf

  • Kerosene plant

  • Solanum auriculatum

  • Botannical Name = Solanum mauritianum

Time and Method of Seed Dispersal

  1. Year round it has mauve to purple flowers  followed by clusters of round berries that ripen from green to dull yellow.

  2. Birds spread the seeds, especially the Kereru (wood pigeon).

  3. May also spread in the wind and by water ( streams etc).

  4. Seeds sprout where they fall below the plant.

Removal

  • Wear gloves - Pull out small plants especially after rain (easier).

  • Poison by spray (I have used Glyphosate with a spray fixative very successfully on large plants.

  • Large plants - Cut top off and paste/drill with chemicals recommended in the links below.

Links to More Information 

https://www.tiakitamakimakaurau.nz/protect-and-restore-our-environment/pests-in-auckland/pest-search/solmau/

https://www.nzpcn.org.nz/flora/species/solanum-mauritianum/

https://www.weedbusters.org.nz/what-are-weeds/weed-list/woolly-nightshade/pdf/?nocache=1

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