Radish Growing Guide
Growing Radish is easier than you think. This guide walks you through everything you need — from planting your first seed to harvesting.
At a Glance
Difficulty
Easy
Category
Vegetable
Sun Exposure
Full Sun, Partial Sun
Frost Tolerance
Frost Hardy
Growing Zones
Zones 2, 3, 4, 5, 6, 7, 8, 9, 10
Plant Family
Brassicaceae
Growing Season
Cool Season
Plant Lifecycle
Annual
Also grows well as
When To Start
First Chance to Plant
30 Days Before Last Frost
Last Chance to Plant
30 Days Before First Frost
When should you plant Radish?
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Your Radish Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
The Journey Ahead
Radish's Lifecycle
Seedling
Mature Plant
Seed Production
Step 2
Planting & Sprouting
Expect sprouts in 3–7 days
Growing Tips
- 1Plant radishes in a sunny spot with at least 6 hours of sunlight daily.
- 2Use well-draining soil rich in organic matter, and keep it consistently moist but not waterlogged.
- 3Space seeds about 1 inch apart to allow room for growth, and use row covers to protect against pests like flea beetles.
Seedling Phase
Step 3
Growth & Maturity
~20
Days to Maturity
30 cm
Mature Height
10 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
21 days
When to Pick
Pull when roots reach full size
How to Harvest
- 1Harvest radishes when the roots are about 1 inch in diameter and firm to the touch.
- 2Gently pull the entire plant from the soil by grasping the base of the greens to avoid breaking the root.
- 3Harvest promptly to prevent the radishes from becoming woody or splitting.
Step 5
Saving Seeds
How to Save Seeds
Saving seeds from your radish plant is easy and rewarding! Simply let a few radish plants flower and form seed pods instead of harvesting them. Once the pods turn brown and dry on the plant, gently pick them and break them open to collect the seeds inside. Spread the seeds out to dry for a few days, then store them in a labeled envelope or jar in a cool, dry place. You’ll be amazed at how simple it is—and next season, you’ll have your very own homegrown seeds ready to plant!
Seed Production
Feeling inspired?
Grow Radish from seed.
Seed to plate in 25 days — the best beginner crop you can grow. Buy a pack and get started.
$2.25
CAD
In Stock
