Growing Borage in Zone 4
When to plant and harvest borage in Zone 4— based on your zone's frost dates.
Zone 4 sits comfortably within borage's best range (Zones 2–11), so it grows well here on a standard schedule.
Borage planting calendar for Zone 4
These months are derived from Zone 4's frost dates — last frost around Early – mid May, first frost around Mid September – mid October.
Start indoors
April
Sow outdoors
May
Transplant
May
Harvest
June
Free planting calendar
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A month-by-month Zone 4 chart with borage already on it — add the rest of your garden, then print it or save it as a PDF.
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Borage care at a glance
- Sunlight
- Full sun (6+ hours); tolerates light shade
- Water
- Low — drought-tolerant once established; about 1 inch per week while establishing
- Spacing
- 12–18 in apart
- Days to maturity
- 50–60 days to first bloom
- Best zones
- 2–11 (annual; self-sows to return year after year once established)
Growing borage in Zone 4: FAQs
Can you grow borage in Zone 4?＋
Zone 4 sits comfortably within borage's best range (Zones 2–11), so it grows well here on a standard schedule.
When should I plant borage in Zone 4?＋
In Zone 4, start seeds indoors around April. Zone 4's last spring frost is typically Early – mid May and its first fall frost around Mid September – mid October, which sets the planting window.
When to harvest borage in Zone 4?＋
Expect to harvest borage in Zone 4 around June, depending on the season and variety.
Full Borage guide →
Complete care, problems, companions, and harvest tips.
Zone 4 overview →
Frost dates, climate, and everything to grow here.
October in Zone 4 →
What to sow, transplant, and harvest this month.