Zone 6 · Root Vegetables Growing Guide

When to Plant Radish
in Zone 6

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
Mar 1 – May 15, Sep 1 – Oct 15
Start indoors
Direct sow
Last Frost
~Apr 1
Days to harvest
22–30 days
Difficulty
Easy
Ready to harvest — Zone 6
Harvest window: Mar – May, Oct – Nov

Planting Calendar

In Zone 6, Radish should be planted outdoors Mar 1 – May 15, Sep 1 – Oct 15, after the average last frost date of approximately Apr 1.

Two good seasons. Daikon radishes planted in fall store well in the ground through winter.

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 6

Two good seasons. Daikon radishes planted in fall store well in the ground through winter.

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 6, radish has two planting windows: Mar 1 – May 15, Sep 1 – Oct 15. The spring window opens after your last frost around Apr 1. The fall window lets you grow a second crop before first frost around Oct 31. Two good seasons. Daikon radishes planted in fall store well in the ground through winter.
Zone 6 has an average last spring frost of approximately Apr 1 and a first fall frost around Oct 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 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 6. Expected harvest window: Mar – May, Oct – Nov.

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Radish in other zones
Crop Guides