| Winterberry Holly | |
| Winterberry | |
| Black Alder |
| Plant Habit: | Shrub |
| Life cycle: | Biennial |
| Sun Requirements: | Partial or Dappled Shade Full Shade |
| Water Preferences: | Wet Mesic Mesic |
| Soil pH Preferences: | Moderately acid (5.6 – 6.0) Slightly acid (6.1 – 6.5) |
| Minimum cold hardiness: | Zone 6b -20.6 °C (-5 °F) to -17.8 °C (0 °F) |
| Maximum recommended zone: | Zone 6b |
| Leaves: | Glaucous |
| Fruit: | Dehiscent |
| Fruiting Time: | Fall |
| Flowers: | Showy Inconspicuous |
| Flower Color: | White |
| Flower Time: | Other |
| Inflorescence Type: | Cyathium |
| Uses: | Flowering Tree |
| Wildlife Attractant: | Birds Hummingbirds |
| Propagation: Other methods: | Cuttings: Root |
| Pollinators: | Self |
| Miscellaneous: | Goes Dormant |
| Conservation status: | Critically Endangered (CR) |
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