Courgette (Zucchini)

Cucurbita pepo (Zucchini Group)

Bushy summer squash producing immature fruit picked young. Reliably prolific — three plants will more than feed an average family.

Hardiness ratings

Courgette (Zucchini) hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 2–11 −45.6 °C to 10 °C Zones where it can be grown as an annual — not a frost-tolerance rating
RHS hardiness rating H1c 5 °C to 10 °C Plant needs at least this level of cold tolerance
Canadian plant hardiness zone Zone 2–9 −40 °C and warmer Zones where it can be grown as an annual — not a frost-tolerance rating
Australian (ANBG) zone Zone 1–7 −15 °C and warmer Zones where it can be grown as an annual — not a frost-tolerance rating

As a tender annual, Courgette (Zucchini) doesn't overwinter — the zone range shows where the growing season supports it. See the RHS rating for its actual cold tolerance.

Growing notes

  • Bee-pollinated; poor fruit set in poor weather signals low pollinator activity, not the plant's fault
  • Pick young (15–20 cm) and often — large fruit shut down flower production

Categories

Related plants

Cross-check Courgette (Zucchini) against your zones

Reference

Courgette (Zucchini) on Wikipedia