Blue morning glory

Native to tropical America, blue morning glory is a vigorous, perennial climber. It is now a common weed throughout South East Queensland and northern New South Wales.

Blue morning glory's thick, smothering growth is a common sight on many rural roadsides and forest edges.

Blue morning glory is not a prohibited or restricted invasive plant under the Biosecurity Act 2014.

Scientific name

Ipomoea indica

Similar species

  • Ipomoea cairica

Description

  • Vine with slender stems up to 7m long.
  • Leaves are dark green, broadly heart-shaped, 3-5 lobes, 4-17cm long, 3-16cm wide, on leafstalk 2-18cm long.
  • Flowers are striking blue-mauve, funnel-shaped, with groups of 3-12 petals fused to 8cm size, short-lived, readily replaced as they die.
  • Seeds are angular, blackish, to 4mm long.

Habitat

  • Common along roadsides and forest edges.

Distribution in Queensland

  • Found throughout South East Queensland.

Life cycle

  • Flowers all year.

Impacts

Environmental

  • Climbs high into canopies of native vegetation.
  • Creates significant shading hazard for other species.
  • Twining stems choke adjacent seedlings and smother mature plants.

How it is spread

  • Spread by slashers, water and garden refuse.

Control

Physical control

  • Hand-pull roots.
  • Mulch heavily to prevent regrowth.

Herbicide control

  • Herbicides are effective.

See the Blue morning glory fact sheet (PDF, 466KB) for herbicide control and application rates.

Biological control

  • No known biological control agents.

Legal requirements

  • Blue morning glory is not a prohibited or restricted invasive plant under the Biosecurity Act 2014. However, by law, everyone has a general biosecurity obligation (GBO) to take reasonable and practical steps to minimise the risks associated with invasive plants and animals under their control.
  • Local governments must have a biosecurity plan that covers invasive plants and animals in their area. This plan may include actions to be taken on certain species. Some of these actions may be required under local laws. Contact your local government for more information.
Last updated
01 July 2016

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