Annual vegetable
Radish plant profile
Raphanus sativus
An annual vegetable for full sun.
Last updated .
When to plant
When to plant Radish
Direct sow
3 weeks before your last spring frost to 2 weeks before your last spring frost
Growing conditions
- Sun
- Full sun
- Water
- 1 in / week
- Planting depth
- 0.5 in
- Soil pH
- 6 to 7
- Lifecycle
- Annual
- Spacing
- 1 to 2 in apart, rows 10 in
- Days to maturity
- 25 to 45 days (from sowing)
Common problems
Watch for these
Also watch for: root cracking.
By hardiness zone
Radish by zone
Planting dates for a typical location in each zone:
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- How to Grow Radishes in Your Home Garden
Utah State University Extension. Supports direct-sowing timing (direct), days to maturity (direct), plant and row spacing (direct), planting depth (direct), and sun requirement (direct). Checked 2026-06-11.
- Growing radishes in home gardens
University of Minnesota Extension. Supports water needs (direct), soil pH (direct), and common problems (direct). Checked 2026-06-11.