Blue Morning Glory

Pan tropical

General description

Tall growing, twining creeper. Distinctive heart-shaped, 3-lobed leaves, purple tubular flowers all year round. Hairy stems often purple.

Prefers full sun, will tolerate light shade. Grows in wet & dry conditions: open areas, forest margins, roadsides, hedges, gardens. Frost-tender.

Vegetative spread from stem fragments. Doesn’t usually seed in NZ. Some seeding white flowers found in Bay of Plenty.

Smothers native vegetation either as groundcover or climber. Very fast growing.

Site management

Eliminate from bush edges & dumps. Limited follow-up required.

Recommended approaches

1. Hand pull small infestations removing all stem fragments.
2. Cut & paint larger stems (100ml glyphosate/1L or 1g metsulfuron/1L).
3. Cut vines at waist height & spray areas below this, summer-autumn (100ml glyphosate + 20mls penetrant/10L or
2g metsulfuron+10ml penetrant/10L).

Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.

Similar species

cathedral bells
Cobaea scandens

Cathedral bells has leaves that are oval, light green and hairless. The flower is light purple and bell shaped.

field bindweed
Convolvulus arvensis

Field bindweed has arrow shaped leaves and white-pale pink flowers.

RPMS status

Surveillance - Whole Region
Community Initiatives - Whole Region
National Pest Plant Accord species - nationwide
blue morning glory - Main species image