Zone 10 · Root Vegetables Growing Guide

When to Plant Potato
in Zone 10

Incredibly productive — a 10-foot row can yield 25 lbs of potatoes. Plant certified seed potatoes. Hilling soil around stems as they grow is the key technique.

Plant outdoors
Jan 1 – Feb 15
Start indoors
Direct sow
Last Frost
~Jan 15
Days to harvest
70–120 days
Difficulty
Medium
Ready to harvest — Zone 10
Harvest window: Mar – May

Planting Calendar

In Zone 10, Potato should be planted outdoors Jan 1 – Feb 15, after the average last frost date of approximately Jan 15.

Cool season only. Fall planting in September for November–December harvest.

Care Guide

Sunlight
Full sun · 6–8 hrs/day
Watering
Regular
Spacing
12–15 inches
Soil
Loose, well-draining, acidic
Days to maturity
70–120 days
Soil pH
4.8–6.0
plant tip · Zone 10

Cool season only. Fall planting in September for November–December harvest.

Feeding Schedule

How often
twice a season
Feed type
balanced then high potassium
Key timing
at planting and when flowering

Feed with balanced fertilizer at planting. Apply high-potassium feed when plants flower to improve tuber development.

Companion Planting for Potato

What you plant next to potato makes a real difference — some plants actively help, others compete or attract pests.

Grows well with
  • Beans
  • Brassicas
  • Corn
  • Marigolds
Keep away from
  • Tomatoes
  • Squash
  • Cucumbers
  • Fennel

These guides get better when growers like you contribute. If something’s wrong or you’ve learned something worth sharing, we’d love to hear it.

What needs correcting?

What should it say?

Your zone (optional)

Thanks — we'll review this and update the guide if needed.

Your growing tip for Potato

Your name (optional)

Your zone (optional)

Tips are reviewed before publishing. Accepted tips earn you a Founding Grower badge when the plant app launches.

Thanks for contributing! We'll review your tip and be in touch before launch.

Common questions

In Zone 10, direct sow potato outdoors Jan 1 – Feb 15 after your last frost date of approximately Jan 15. Cool season only. Fall planting in September for November–December harvest.
Zone 10 has an average last spring frost of approximately Jan 15 and a first fall frost around Dec 31. These dates vary by specific location — use your ZIP code in the plant app for precision based on the nearest NOAA weather station.
Good companion crops for potato include Beans, Brassicas, Corn, Marigolds. Avoid planting near Tomatoes, Squash, Cucumbers, Fennel, which can compete for nutrients or attract pests.
Potato typically takes 70–120 days from transplant or direct sow to harvest in Zone 10. Expected harvest window: Mar – May.

Free app · iOS February 2028

Track your Potato in plant

Get a live traffic light for every crop in your garden — zone-aware planting calendar, real-time weather alerts, and a community of growers near you.

Be first to back on Kickstarter and lock in the founding price.

Potato in other zones
Crop Guides