Zone 10 · Squash Growing Guide

When to Plant Spaghetti Squash
in Zone 10

The novelty squash that earns its place. Fork out the cooked flesh for spaghetti-like strands. 90+ days means it needs a long warm season — one of the latest winter squashes.

Plant outdoors
Feb 1 – Mar 1
Start indoors
Direct sow
Last Frost
~Jan 15
Days to harvest
90–100 days
Difficulty
Easy
Growing — Zone 10
Harvest window: May – Jul

Planting Calendar

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

Spring season only. Needs warm but not extreme temperatures for best production.

Care Guide

Sunlight
Full sun · 6–8 hrs/day
Watering
Moderate
Spacing
36–48 inches
Soil
Rich, well-draining, compost-amended
Days to maturity
90–100 days
Soil pH
6.0–7.5
plant tip · Zone 10

Spring season only. Needs warm but not extreme temperatures for best production.

Feeding Schedule

How often
monthly
Feed type
balanced then high potassium
Key timing
switch to high-potassium when fruit sets

Feed at planting, at vine run, and when fruit appears. Avoid high nitrogen late season.

Companion Planting for Spaghetti Squash

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

Grows well with
  • Beans
  • Corn
  • Nasturtiums
Keep away from
  • Potatoes
  • Brassicas
  • Fennel

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Common questions

In Zone 10, direct sow spaghetti squash outdoors Feb 1 – Mar 1 after your last frost date of approximately Jan 15. Spring season only. Needs warm but not extreme temperatures for best production.
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 spaghetti squash include Beans, Corn, Nasturtiums. Avoid planting near Potatoes, Brassicas, Fennel, which can compete for nutrients or attract pests.
Spaghetti Squash typically takes 90–100 days from transplant or direct sow to harvest in Zone 10. Expected harvest window: May – Jul.

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Spaghetti Squash in other zones
Crop Guides