When should I plant Borage in Zone 1b?

Direct sow Borage outdoors around May 11. Harvest around Jul 5.

What is the last frost date for Zone 1b?

The average last spring frost date for Zone 1b is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Borage in Zone 1b?

Yes. Borage needs 55 days to harvest. Zone 1b has a 95-day growing season, which is sufficient.

Growing Borage in Zone 1b

Zone 1b has harsh winters and a short growing season. Start Borage early indoors to maximize your harvest window. Last frost: May 25. First frost: Aug 28.

Planting Calendar

Outdoor

Harvest

May 11Aug 28

Season: May 25 – Aug 28 (95 days)

Zone1b

Last FrostMay 25

First FrostAug 28

Season Length95 days

Days to Harvest55

SunFull Sun

Frost ToleranceLight

Spacing18/sqft

When to Plant Borage in Zone 1b

Sow Seeds Outdoors: May 11

Direct sow Borage seeds outdoors around May 11. Soil temperature should be at least 50°F. Space at 18/sqft.

Harvest: Jul 5

First harvest approximately Jul 5 (~55 days from planting). Continue harvesting until first frost (Aug 28).

Companion Planting

✅ Strawberries✅ Tomatoes✅ Squash✅ Cucumbers

Borage in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Borage Garden

Track Borage from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Borage Growing Guide