Red Round

Family: Brassicaceae Root Vegetable

Planting Schedule

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Crisp as morning air, Red Round radish brings a vivid, glossy crimson crown over a clean white interior—tender, pleasantly peppery, and never pithy.

At just about 25 days from sowing, the roots form a perfectly round silhouette with a smooth skin that snaps with satisfying bite. Ideal for fresh garden salads and bright garnishes, Red Round also shines when sliced for quick, colorful platters and lively sauces.

Light: Full SunMaturity: 25 DaysHabit: Taproot

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Red Round 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)	55
Min Soil Temp (°F)	40
Min Night Temp (°F)	35
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Red Round gives you a crisp, juicy radish bite with a peppery edge that won’t turn bitter or woody—so it stays satisfying even in no-cook applications. Slice it paper-thin for salad or pickle it quickly for a sharp, clean tang that plays beautifully against creamy dairy and salty proteins.

Best Uses

thin slicing for fresh salads where the crunch stays loud
quick-pickled rounds for pop-in-your-mouth acidity
grated into quick sauces and relishes that cling, not weep
colorful garnish for platters and grain bowls

Flavor Profile

tender snap with a watery crunch pleasant peppery bite (not harsh) clean, slightly sweet radish finish smooth skin with no pithiness

Kitchen Pairings

fine salt and cultured butter white vinegar or champagne vinaigrette radichio or arugula goat cheese crème fraîche or sour cream smoked salmon or roast pork

Frequently Asked Questions

What pest or disease commonly affects radish (Raphanus sativus) and how can I prevent it?

Flea beetles can rapidly chew holes in radish leaves, especially in warm, dry weather. Cover seedlings with a fine row cover until foliage is well established, and remove weeds that host pests. If you see signs of downy mildew (grayish fuzz or leaf spots), improve airflow by thinning promptly and avoid wetting leaves during watering.

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

Keep the soil evenly moist from sowing through bulbing, typically watering lightly but consistently to about 1 inch per week total depending on your weather. Let the top 1/2 inch of soil dry slightly between waterings to prevent rot, but don’t let it fully dry out because radishes turn woody and may split. Water in the morning so the surface dries quickly while roots are forming.

How do I tell when red radish (Raphanus sativus) is ready to harvest?

Harvest when the radish roots reach their full size—about 25 days from sowing—often when you can see the shoulder of the bulb above the soil. A good guide is the root’s diameter (look for the variety’s expected size) and firmness when gently pressed; if it feels spongy or grows too long, it’s likely getting past peak. Pull one test plant, taste it for crispness, then harvest the rest promptly because radishes get hot-flavored quickly.