Garlic mustard (Jack-by-the-hedge)

Alliaria petiolata

Biennial woodland-edge herb with garlic-scented leaves used as a wild salad green. Important early-season food plant for several butterflies.

Hardiness ratings

Garlic mustard (Jack-by-the-hedge) hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 3–8 −40 °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 3–8 −34 °C to −1 °C Plant tolerates down to this zone
Australian (ANBG) zone Zone 1–5 −15 °C to 10 °C Plant tolerates down to this zone

Growing notes

  • Secondary larval food plant for the orange tip butterfly and primary food for the green-veined white
  • INVASIVE in North America — do not plant there, it displaces native woodland flora
  • Edible garlic-flavoured leaves — historically used as a free hedgerow salad

Categories

Related plants

Cross-check Garlic mustard (Jack-by-the-hedge) against your zones

Reference

Garlic mustard (Jack-by-the-hedge) on Wikipedia