Family: Salicaceae

Origin, Description & Uses
Pussy willow (Salix × reichardtii) is a naturally occurring hybrid willow native to Europe, derived from crosses between goat willow (Salix caprea) and grey willow (Salix cinerea). It grows as a large shrub or small tree and is adapted to temperate climates, particularly in moist soils and along waterways. Like other willows, it produces soft, silvery catkins in early spring that are valued for their ornamental appeal. Pussy willow is commonly cultivated in gardens and landscapes for its attractive seasonal display and is also used in floral arrangements and decorative crafts.

Risks & Threats
Salix × reichardtii is considered a low-risk species. Although willows can spread vegetatively under favorable conditions, this hybrid has not demonstrated significant invasive tendencies compared to higher-risk willow species. Its preference for temperate environments may also limit its ability to establish and spread in tropical regions. As with any non-native plant, monitoring is recommended when grown near natural areas, wetlands, or waterways, but current evidence suggests that Salix × reichardtii poses relatively little threat to native ecosystems. Responsible cultivation and proper disposal of plant material can further minimize any potential environmental impacts.

High Risk Traits:

• Naturalized in temperate and Mediterranean regions of Australia and New Zealand
  
• Reported to be a riparian weed in Australia and New Zealand (conflicting reports on weediness and impacts)
  
• Other Salix species are invasive
  
• Parent species tolerate many soil types (presumably applies to hybrid)
  
• Reported to form dense stands in New Zealand and possibly Australia
  
• Hybridizes with other Salix species
  
• Spreads vegetatively
  
• Vegetative fragments spread by water and possibly as garden waste
  
• Intentionally cultivated by people
  
• Salix species able to coppice and resprout after cutting

Low Risk Traits:

• A temperate and Mediterranean species that may only pose a threat to higher elevations of tropical islands
  
• Unarmed (no spines, thorns, or burrs)
  
• Provides fodder for livestock (palatable despite reports of toxicity)
  
• Non-toxic to animals and people
  
• Ornamental
  
• Shade-intolerant
  
• Male hybrid (incapable of seed production)
  
• Lack of seed production limits ability for long distance dispersal
  
• Herbicides may provide effective control