Red Globe

Radish

Zone 4b Save Garden

🌱 25d to harvest Taproot

Crisp as a fresh-picked jewel, Red Globe radish forms a perfectly rounded, glossy red sphere with a clean, bright bite and a gent…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	May 13th
Transplant / Sow Outdoors	May 13th
Harvest Begins	Jun 7th
Harvest Ends	Sep 27th

Crop Details

Trait	Value
Days to Maturity	25
Sun Requirements	Full Sun
Growth Habit	Taproot
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	55
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	Not Required

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Frequently Asked Questions

How do I prevent and treat powdery mildew on Raphanus sativus (Red Globe radish)?

Powdery mildew appears as a white, powdery coating on radish leaves, often after humid spells. Remove and discard heavily affected leaves, then improve airflow by thinning plants so leaves aren’t touching. If mildew keeps spreading, spray an approved horticultural fungicide and avoid overhead watering to keep foliage drier.

How often should I water Red Globe radish during the main growth phase to avoid splitting or pithiness?

Water so the top 1–2 in (2.5–5 cm) of soil stays consistently moist, typically about 1 inch (2.5 cm) per week total depending on heat and wind. Start with frequent light watering after sowing until seeds sprout, then keep moisture even—radishes that dry out then get watered heavily are more likely to crack or become pithy. Use a gentle stream to prevent disturbing developing roots.

When is Red Globe radish ready to harvest, and how can I tell without guessing the date?

Harvest when roots are about 1.5–2.5 in (3.5–6 cm) wide and feel firm with a smooth, well-colored surface; Red Globe is often ready in ~25 days. Pull one test radish—if it’s tender and crisp with a mild bite, harvest the rest promptly before roots enlarge and become woody.

Crisp as a fresh-picked jewel, Red Globe radish forms a perfectly rounded, glossy red sphere with a clean, bright bite and a gently sweet finish. The flesh stays tender and snappy at 25 days, delivering a fine-grained crunch that shines in fresh salad mixes and as a vivid garnish. Grow for quick, reliable harvests—each globe looks as good as it tastes, with color that holds its allure from bed to bowl.

Sowing Tips

Transplant Conditions

Wait until soil reaches 40°F and nights stay above 32°F before moving outdoors.

Expert Note

For the sweetest, crispest “salad” radishes, keep soil consistently moist and avoid letting them run hot or over-mature.