Hardiness
H6 Hardy — very cold winter (to −15 to −20°C)
Position
Full sun, Partial shade
Height × Spread
1.8–3.7 m × 1.8–3.7 m
Soil
Well-drained, moisture-retentive, acidic soil (pH 4.5-5.5); organically rich; loam or sand.
Toxicity
No specific toxicity is listed by the RHS. This is not a guarantee of safety — check with a vet or the ASPCA before pets or children eat any plant.