Forsythia

Forsythia suspensa

Familiar yellow spring-flowering shrub with a less-known second life as a TCM antiviral ("lianqiao") harvested from the fruit.

Hardiness ratings

Forsythia 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 H7 down to −20 °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 1–4 −15 °C to 5 °C Plant tolerates down to this zone

Growing notes

  • One of the earliest shrubs to bloom — flowers on bare branches before leaves emerge
  • Always consult a qualified medical or herbal practitioner before using any plant medicinally

Categories

Related plants

Cross-check Forsythia against your zones

Reference

Forsythia on Wikipedia