Ilex verticillata - Winterberry Holly

Winterberry Holly

Ilex verticillata

Also called Black Alder Winterberry

  • Flowers are white but inconspicuous
  • Red berries persist into winter (on female plants only)
  • Dark green glossy leaves turn (occasionally) to purple in autumn
  • Suckering profusely, it produces an oval shrub
  • Bloom Time: June to July



175-200 cm

175-200 cm

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Growing and Maintenance Tips:

Although winterberry will tolerate some shade, fruit production is best in sunny locations. Winterberry will tolerate a range of soil types and moistures. Ilex verticillata plants are dioecious (plants are either male or female). One male winterberry plant will effectively pollinate up to six female plants. Common winterberry is typically found growing in swamps, damp thickets, low woods and along ponds and streams.

Additional Notes about Winterberry Holly:

Native to Ontario   

Ilex berries can be harmful; they contain an alkaloid similar to caffeine.