Cut-leaf Nightshade

What is cut-leaf nightshade?

(Solanum triflorum)
Cut-leaf nightshade flower, photo: Karen StewartGeneric Weed Distribution Map
  • Cut-leaf nightshade is a native of North America that has become a weed of cultivation and disturbed sites.
  • Cut-leaf nightshade is a declared weed in Tasmania under the Tasmanian Weed Management Act 1999. The importation, sale and distribution of cut-leaf nightshade are prohibited in Tasmania.


 

How to identify cut-leaf nightshade

  • Cut-leaf nightshade is a sprawling non-woody plant growing from 30 to 100 cm high and spreading to 50 to 100 cm. The stems and lobed, toothed leaves are sparsely hairy and without spines. The flowers are white to pale purple, often in clusters of three on short stalks, and the fruits are a marbled-green berry about 10 cm in diameter.
  • Cut-leaf nightshade flowers in summer, fruiting extends from summer through to autumn and seeds are ripe by early autumn. Germination occurs in autumn and winter.
Cut-leaf nightshade flowering, photo: Karen Stewart Cut-leaf nightshade, photo: Karen Stewart Cut-leaf nightshade berries, photo: Karen Stewart
Image top right: Flowering cut-leaf nightshade
Images above, left to right: Flowering cut-leaf nightshade, spread of cut-leaf nightshade, cut-leaf nightshade berries - all photos: Karen Stewart


Cut-leaf nightshade in Tasmania

  • Cut-leaf nightshade occurs in the Seven Mile Beach area in Tasmania's south (see map). It prefers sunny positions with well drained soils. It is found growing on dunes, recreational areas, along roadsides and in stock yards. Cut-leaf nightshade has the potential to be a serious agricultural weed in Tasmania.
  • Cut-leaf nightshade can infest a variety of crops such as potatoes, where it may be difficult to control. All parts of the plant are toxic to mammals. Cut-leaf nightshade is also a host for the tomato spotted wilt virus.

Cut-leaf nightshade in Tasmania

  • Cut-leaf nightshade occurs in the Seven Mile Beach area in Tasmania's south (see map). It prefers sunny positions with well drained soils. It is found growing on dunes, recreational areas, along roadsides and in stock yards. Cut-leaf nightshade has the potential to be a serious agricultural weed in Tasmania.
  • Cut-leaf nightshade can infest a variety of crops such as potatoes, where it may be difficult to control. All parts of the plant are toxic to mammals. Cut-leaf nightshade is also a host for the tomato spotted wilt virus.

What is the legal status of cult-leaf nightshade in your area?

Detailed management and control guidelines for cut-leaf nightshade can be found in the Cut-leaf Nightshade Control Guide. Refer also to Herbicides for Cut-leaf Nightshade Control. For further information see DPIPWE's Weed Links and Resources.

See also
Cut-leaf Nightshade Control Guide
Herbicides for Cut-leaf Nightshade Control
Statutory Management Plan for Cut-leaf Nightshade
DPIPWE's Weed Links and Resources

Other useful links
Pest Genie
APVMA


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