Cape Ivy

Delairea odorata

Family: Asteraceae

Type of weed:

Priority Weed Local Priority Weed. (See more weeds of the class.)

Flowering Months: , , ,

Description

A vigorous perennial vine. Roots are fibrous or woody and mostly shallow.

Leaves are alternate, glossy, three to eight lobed and ivy-shaped.

Flowers are daisy-like, yellow and scented, in branching clusters on short stalks. Flowering is in winter to early spring.

The plant produces many tiny seeds, each equipped with a small hairy parachute, like dandelion.

Dispersal

Seed is dispersed by wind and water. The plant regenerates very easily from stem fragments and is commonly spread in dumped garden waste.

Impact on bushland

Cape Ivy is a highly invasive plant forming a dense smothering curtain that eventually collapses forest canopy and prevents regeneration of native plants.

Distribution

. Mid and Lower Blue Mountains

Alternative planting

Native plants

  • Twining Purple-pea (Hardenbergia violacea)
  • Wonga Wonga Vine (Pandorea pandorana)
  • Water Vine (Cissus antarctica)
  • Old Man’s Beard (Clematis aristata)

NB: NOT Clematis cultivars – these can also be environmental weeds.

Council provides a tool, on its Mountain Landscapes website, to help you choose native alternative plantings. Choose your village, soil, vegetation community and the purpose of your planting, and the tool will give you suggestions.

There are native nurseries in several Blue Mountains villages, including Glenbrook, Lawson and Katoomba. Please also ask at your favourite local nursery.

Control

Specific control tips for this weed

CONTROL MEASURE: THE SPREAD OF THIS PLANT SHOULD BE ADEQUATELY CONTAINED TO PREVENT SPREAD IMPACTING ON PRIORITY ASSET. WEED NOTICES WILL ONLY BE ISSUED FOR THESE WEEDS UNDER SPECIAL CIRCUMSTANCES

  • Primary control  involves clearing from around trees, shrubs and ferns. Pull out all runners. Remove all parts from moist areas.
  • Pull out smaller plants & seedlings. Cut or scrape and paint main woody stems with herbicide. Treat before winter flowering to prevent seed set.

Check sites thoroughly because stem pieces break off easily during clearing.

Follow-up treatment is required.

For key points on these techniques:

  • See Weed Control Techniques
  • See Risks associated with control

Refer to the NSW Department of Primary Industry’s Noxious and Environmental Weed Control Handbook:

www.dpi.nsw.gov.au/agriculture/pests-weeds/weeds/publications/noxious-enviro-weed-control

For key points on these techniques:

Local Priority Weed

Control measures:

  • The plant should be fully and continuously suppressed and destroyed.
  • Plants under 4 metres in height should be fully and continuously suppressed and destroyed.
  • The spread of this plant should be adequately contained to prevent spread impacting on priority assets. Weed notices will only be issued for these weeds under special circumstances.

For more info

For key points on these techniques: