Scarlet Globe

Family: Brassicaceae Root Vegetable

Planting Schedule

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Crisp as a fresh snowfall, Scarlet Globe radish forms a perfectly round, glossy scarlet globe with a clean, bright bite and a pleasantly mild heat.

The flesh stays tender and juicy, with a fine, satiny texture that holds its snap in salads and quick garnishes. Grow Scarlet Globe for a fast, satisfying harvest—about 25 days from sowing—when you want color, crunch, and dependable uniformity in every sowing.

Light: Full SunMaturity: 25 DaysHabit: Taproot

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Scarlet Globe Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Direct Sow	Jun 15th	Jul 10th – Jul 15th
Zone 1b	Direct Sow	Jun 1st	Jun 26th – Aug 1st
Zone 2a	Direct Sow	May 25th	Jun 19th – Aug 29th
Zone 2b	Direct Sow	May 15th	Jun 9th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jun 9th – Sep 1st
Zone 3b	Direct Sow	May 19th	Jun 13th – Sep 21st
Zone 4a	Direct Sow	May 15th	Jun 9th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jun 7th – Sep 27th
Zone 5a	Direct Sow	May 8th	Jun 2nd – Sep 30th
Zone 5b	Direct Sow	May 4th	May 29th – Oct 5th
Zone 6a	Direct Sow	May 1st	May 26th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	May 20th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	May 15th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	May 5th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	Apr 26th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	Apr 17th – Nov 12th
Zone 9a	Direct Sow	Mar 6th	Mar 31st – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Mar 6th – Dec 9th
Zone 10a	—	Oct 1st	Oct 26th – Feb 28th
Zone 10b	—	Oct 1st	Oct 26th – Feb 28th
Zone 11a	—	Oct 1st	Oct 26th – Feb 28th
Zone 11b	—	Oct 1st	Oct 26th – Feb 28th
Zone 12a	—	Oct 1st	Oct 26th – Feb 28th
Zone 12b	—	Oct 1st	Oct 26th – Feb 28th
Zone 13a	—	Oct 1st	Oct 26th – Feb 28th
Zone 13b	—	Oct 1st	Oct 26th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	25
Sun Requirements	Full Sun
Growth Habit	Taproot
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	50
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Scarlet Globe is the kind of radish you slice with confidence: the flesh is tender and glassy, with a bright bite that doesn’t turn pithy or mealy. Use it raw for maximum snap or pickle briefly so it stays crisp—this variety loves clean acids and creamy bases.

Best Uses

thin-slice raw salad radish for crunchy texture under vinaigrette
quick pickling for a pink, snappy garnish on tacos or grain bowls
baton-sliced radish with flaky salt as a cold starter
grating into a quick sauce with yogurt/sour cream to keep it sharp

Flavor Profile

bright, clean radish bite mild heat with a peppery edge tender-twangy juiciness satiny snap that stays crisp

Kitchen Pairings

butter sour cream lemon sea salt fresh dill honey

Frequently Asked Questions

How do I manage powdery mildew or downy mildew on Raphanus sativus (scarlet globe radish)?

Watch for pale, dusty patches (powdery mildew) or grayish/fuzzy growth with leaf yellowing (downy mildew), especially in humid, crowded beds. Improve airflow by thinning to about 1–2 in (2.5–5 cm) between plants and water at the soil line so leaves stay dry; remove heavily affected leaves. If conditions stay wet, use a labeled fungicide suitable for edible brassicas and follow the label interval before harvesting.

How often should I water scarlet globe radish during active root growth to avoid splitting or woody roots?

Keep the top 1–2 in (2.5–5 cm) of soil consistently moist but not soggy from when seeds germinate until harvest. In most home gardens, that typically means light watering 1–2 times per week, with more frequent small waterings during hot or windy weather; aim for steady moisture to prevent cracking. If you notice radishes getting tough or bitter, increase the regularity of watering rather than soaking once.

When are scarlet globe radishes (Raphanus sativus) ready to harvest?

Harvest in about 25 days when the roots are fully rounded and reach roughly 1–1.5 in (2.5–4 cm) across and feel firm. Don’t leave them in the ground after they size up—overgrown radishes of this type get pithy and sharper in flavor. Check a couple plants early, then harvest the rest promptly at the same root size.