Oregon grape

Mahonia aquifolium

Evergreen shrub with glossy holly-like leaves, fragrant yellow winter flower clusters and clusters of grape-like blue-black berries in summer.

Hardiness ratings

Oregon grape hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 5–8 −28.9 °C to −6.7 °C Plant tolerates down to this zone
RHS hardiness rating H6 −20 °C to −15 °C Plant needs at least this level of cold tolerance
Canadian plant hardiness zone Zone 5–8 −23 °C to −1 °C Plant tolerates down to this zone
Australian (ANBG) zone Zone 2–6 −10 °C to 15 °C Plant tolerates down to this zone

Growing notes

  • Yellow flowers in February and March provide critical early bee forage when little else is open
  • Blue-black berries feed thrushes, blackbirds and blackcaps
  • Shade tolerant and drought tolerant once established — succeeds in difficult shaded sites
  • Native to the Pacific Northwest of North America

Categories

Related plants

Cross-check Oregon grape against your zones

Reference

Oregon grape on Wikipedia