Northern temperate regions

General description

Mostly deciduous trees & shrubs. Leaves usually alternate, lanceolate, pointed at tips, sometimes toothed. Flowers - catkins (without petals) in spring. Some species produce large amounts of seed. See Crack willow & Grey willow for specific descriptions.

Riverbanks, lakesides, drainage canals, wet places. Originally planted for soil stabilisation & reclamation

Brittle, easily broken stems & shoots grow very easily. Seeds disperse by wind, water.

All waterways. Forms dense stands totally excluding all other vegetation.

Site management

Discourage use. Establish less invasive species eg. poplar (non suckering), flax, mänuka, känuka, lacebark, toetoe, giant umbrella sedge, native carex spp.

Recommended approaches

1. Hand pull small plants.
2. Make cuts or holes at 20cm intervals around trunk. Mix 20ml metsulfuron/1L & inject 2ml into each cut or hole.
3. Spray when in full leaf & ensure full coverage
(125ml glyphosate + 20mls penetrant/10L or 5g metsulfuron/10L).

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

Search tags

RPMS status

Not a legally declared pest plant
willows - Main species image