Potato illustration 🥔

🥔 Growing Potato in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Potato in this zone. Last frost: May 1. First frost: Oct 5.

Planting Calendar

Outdoor
Harvest
Apr 17Oct 5

Season: May 1 – Oct 5 (157 days)

Zone4b
Last FrostMay 1
First FrostOct 5
Season Length157 days
Days to Harvest90
SunFull Sun
Frost ToleranceModerate
Spacing1/sqft (12" apart)

When to Plant Potato in Zone 4b

Sow Seeds Outdoors: Apr 17

Direct sow Potato seeds outdoors around Apr 17. Soil temperature should be at least 45°F. Space at 1/sqft (12" apart).

Harvest: Jul 16

First harvest approximately Jul 16 (~90 days from planting). Continue harvesting until first frost (Oct 5).

Companion Planting

✅ Cabbage✅ Marigolds✅ Eggplant✅ Corn✅ Beans
❌ Tomatoes❌ Pumpkins❌ Cucumbers❌ Squash

Frequently Asked Questions

When should I plant Potato in Zone 4b?

Direct sow Potato outdoors around Apr 17. Harvest around Jul 16.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is May 1. The first fall frost averages Oct 5, giving a 157-day growing season.

Can I grow Potato in Zone 4b?

Yes. Potato needs 90 days to harvest. Zone 4b has a 157-day growing season, which is sufficient.

What is the best month to plant Potato in Zone 4b?

The best time to plant Potato in Zone 4b is around Apr 17, when soil temperatures are suitable and frost risk has passed.

What companion plants grow well with Potato?

Good companion plants for Potato include Cabbage, Marigolds, Eggplant, Corn, Beans. Avoid planting Potato near Tomatoes, Pumpkins, Cucumbers, Squash.

How long does Potato take to harvest?

Potato takes approximately 90 days from planting to harvest. In Zone 4b, expect your first harvest around Jul 16.

Plan Your Potato Garden

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

Start Free Potato Growing Guide