Zone 11 · Root Vegetables Growing Guide

When to Plant Radish
in Zone 11

The fastest crop in the garden — ready in 22 days. Use radishes to mark slow-germinating carrot rows. Sow a pinch every week from early spring to early summer, then again in fall.

Plant outdoors
Oct 15 – Jan 15
Start indoors
Direct sow
Last Frost
~none
Days to harvest
22–30 days
Difficulty
Easy
Wrong season — Zone 11
Harvest window: Nov – Feb

Planting Calendar

In Zone 11, Radish should be planted outdoors Oct 15 – Jan 15, after the average last frost date of approximately none.

Short cool season only. Fast-growing nature helps fit in a full crop.

Care Guide

Sunlight
Full sun to partial shade · 4–8 hrs/day
Watering
Regular
Spacing
2–3 inches
Soil
Loose, well-draining
Days to maturity
22–30 days
Soil pH
6.0–7.0
plant tip · Zone 11

Short cool season only. Fast-growing nature helps fit in a full crop.

Feeding Schedule

How often
none needed
Feed type
none
Key timing
n/a

Fast-maturing crop that doesn't need feeding. Excess nitrogen produces leafy tops and poor root development.

Succession Planting

Sow every 1 weeks

Sow every 1–2 weeks from early spring through autumn. Radishes are the ultimate succession crop — ready in 3–4 weeks. A small row every week or two means you always have some ready without a huge surplus.

Companion Planting for Radish

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

Grows well with
  • Carrots
  • Lettuce
  • Spinach
  • Cucumbers
Keep away from
  • Hyssop
  • Fennel
  • Turnips

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Common questions

In Zone 11, radish is a fall-planted crop. Plant outdoors Oct 15 – Jan 15 once temperatures cool in autumn. It overwinters and is ready to harvest around Nov – Feb. No last frost consideration — plant before the ground freezes.
Zone 11 has an average last spring frost of approximately none and a first fall frost around none. 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 radish include Carrots, Lettuce, Spinach, Cucumbers. Avoid planting near Hyssop, Fennel, Turnips, which can compete for nutrients or attract pests.
Radish typically takes 22–30 days from transplant or direct sow to harvest in Zone 11. Expected harvest window: Nov – Feb.

Free app · iOS February 2028

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Radish in other zones
Crop Guides