Korean Mu

Radish

Zone 9b Save Garden

🌱 55d to harvest Taproot

Crisp at first bite, Korean Mu forms a long, elegant winter radish with a clean, bright bite and a pleasantly mild heat that ling…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Feb 9th
Transplant / Sow Outdoors	Feb 9th
Harvest Begins	Apr 5th
Harvest Ends	Dec 9th

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Full Sun
Growth Habit	Taproot
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	55
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Recommended Companions

Inchelium Red Garlic

Yadkin Valley Red Onion

California Early Onion

Red Amposta Onion

Musselburgh Leek

Tropeana Lunga Onion

Frequently Asked Questions

What pest or disease most often affects winter radish (Raphanus sativus), and how do I treat it?

Flea beetles commonly attack radish seedlings in Brassicaceae, leaving tiny shot holes on leaves. Use floating row cover immediately after sowing and keep it on until plants are well established; if damage appears, spray a labeled insecticidal soap and repeat as directed. For disease, watch for clubroot (swollen, distorted roots) and avoid planting in the same bed—remove infected plants and use fresh or amended soil to reduce recurrence.

How often should I water Korean mu (winter radish, Raphanus sativus) during the main growing phase?

After germination, keep soil consistently evenly moist but not waterlogged, especially from when roots start swelling until harvest. Water deeply about 1–2 times per week depending on your soil and rainfall; aim for moisture at the root zone so the bed doesn’t dry out between waterings. If the soil swings between very dry and very wet, roots are more likely to become woody or crack.

How can I tell when Korean mu (Raphanus sativus) is ready to harvest?

Harvest at about 55 days when the roots have reached the expected size for your sowing spacing and the shoulders look full and firm. Gently pull one plant to check root diameter—if the root is still thin or elongated, give it more time. Once the roots are firm to the touch, harvest promptly because overgrown winter radish can become tougher and more pungent.

Crisp at first bite, Korean Mu forms a long, elegant winter radish with a clean, bright bite and a pleasantly mild heat that lingers like fresh pepper on the palate. The flesh stays firm and juicy with a fine, even grain—ideal for slicing into tender rounds that hold their shape, and for bold flavor-building preparations where its sweetness can come forward. Grow Korean Mu for a dependable 55-day harvest that rewards cool-season patience with a striking, market-ready root.

Sowing Tips

Transplant Conditions

Wait until soil reaches 45°F and nights stay above 28°F before moving outdoors.

Expert Note

For Korean Mu (winter radish), sow directly for best taproot formation and keep soil consistently moist to maintain sweet, juicy texture.