Red Round

Family: Brassicaceae Root Vegetable

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

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	May 20th
Harvest Ends	Oct 16th

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.