What plant hardiness zone is Welland

Welland is located at Niagara Region, Ontario (ON), Canada.

Plant hardiness zone (winter frost zone or gardening zone) for Welland is 6b by the PHZ Canadian scale.

Plants of 6b PHZ hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b PHZ.

Also perennial plants from the equivalent USDA zone 5b with coldest winter temperature −26.1 … −23.3 °C and lower can be grown here, see list of plants for 5b USDA winter zone.

Welland, Ontario @ wikipedia.