Grey Willow
| Botanical Name | Salix Cinerea |
|---|---|
| Family | Salicaceae |
| Origin | Europe, W Asia, N Africa |
Identification
Shrubby, thicket-forming small tree, sometimes as much as 7 metres high. Shots grey-green due to the presence of hairs, which are persistent. leaves shiny on the upper surface but covered with soft grey hairs underneath.Habitats
Spreading alongside streams like many other willows, and also seeding further up onto drier locations. Can form the dominant vegetation in swampy areas.Impact to Biota and Ecosystems
Similar to other willows, blocking waterways and modifying wetlands, but causing greater concern in some areas as it is germinating from wind-borne seeds in places further away from water.Dispersal Routes, Vectors, Infestation Sources
While it is liable to spread from cut pieces etc like other willows, its very evident ability to disperse by wind is creating a greater threat.Management
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Management |
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| Physical Control |
Early detection and prompt destruction of isolated plants appearing in remote places appears to be much more important with this type of willow. |
| Disposal | |
| Chemical Control | Frill (stem cut)or drill and fill cuts or holes with herbicide.
A number of hericides are suitable to use.
Cutting and treating the stump may also be an appropriate method of control but be aware the cut material can sprout and grow into new plants. Overall spray with Glyphosate (1 litre per 100 litres water) from January to April before leaf fall begins. |
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Biological Control |
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| Recommended Approach | For advise contact a pest plant control officer. |
Further Comment
This plant is prohibited from sale within New Zealand.