Home › Borage › Grow in Ontario

Can You Grow Borage in Ontario?

Canada · Canadian Zone 5 · zones 3, 4, 5, 6, 7

Grows well here

Borage grows easily anywhere in your zone — direct sow and let it self-seed for years of free plants.

Plant zones

2a–11b

Ontario last frost

mid-April

Ontario first frost

mid-October

Days to harvest

50–60 days

When to plant Borages in Ontario

Direct sow

Apr 15

Harvest

Jun 4 – Jun 14

Dates are approximate, based on Ontario's average frost dates. Your exact yard may vary by microclimate.

About Borage

Borage is an effortless annual with striking blue star-shaped flowers. The cucumber-flavored leaves and flowers are edible, and it is a powerful pollinator magnet that self-seeds freely year after year.

Direct sow after last frost — hates transplanting. Self-seeds so aggressively you plant it once and it returns every year. Great companion plant for tomatoes and strawberries. Harvest flowers daily to encourage more blooms.

Full borage growing guide →

Gardening in Ontario

Ontario spans several climate zones. Northern Ontario is Zone 3-4 with short seasons; southern Ontario is Zone 5-7 with long productive seasons. The Niagara Peninsula is one of Canada's premier fruit-growing regions.