my LocalPlanting

When to Plant Watermelon Radish in Metamora, Michigan (48455)

Location

Metamora, Michigan

ZIP Code

48455

USDA Zone

6a

Last Frost

Monday, April 20, 2026

📅 Planting Calendar

Direct Sow Outdoors Monday, March 23, 2026

Pro Tip: Sow Watermelon Radish directly outdoors 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Raphanus sativus
Days to Maturity 60 days
Mature Height 6-10"
Spread 4"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

4" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 3-7 days

Ready to Plant Watermelon Radish in Metamora?

Get your seeds now so they're ready by Monday, March 23, 2026.

* Affiliate links — we may earn a small commission at no extra cost to you.

🤝 Good Companions

CarrotSpinachLettucePea

⚠️ Avoid Planting Near

Hyssop

Other Plants for Metamora

Growing Watermelon Radish in Zone 6a

Watermelon Radish (Raphanus sativus) is a popular garden vegetable. In Metamora, Michigan, which is in USDA Hardiness Zone 6a, you should direct sow seeds around Monday, March 23, 2026.

Your average last frost date is Monday, April 20, 2026. Watermelon Radish grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.