Atomic Red

Family: Apiaceae Root Vegetable

Planting Schedule

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Sweetly aromatic and richly colored, Atomic Red carrots bring a vivid, true-red harvest with a crisp, fine-grained bite.

Danvers type roots are classically tapered with a smooth, even surface, ideal for turning out uniform, market-ready carrots from garden rows. Grow Atomic Red for fresh snacking, roasting to caramel-sweet depth, and vibrant color in salads, slaws, and sauces—its flavor stays bright from first pull to the last bite.

Light: Full SunMaturity: 75 DaysHabit: Taproot

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Atomic Red 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	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Direct Sow	May 25th	Aug 8th – Aug 29th
Zone 2b	Direct Sow	May 15th	Jul 29th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jul 29th – Sep 1st
Zone 3b	Direct Sow	May 19th	Aug 2nd – Sep 21st
Zone 4a	Direct Sow	May 15th	Jul 29th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jul 27th – Sep 27th
Zone 5a	Direct Sow	May 8th	Jul 22nd – Sep 30th
Zone 5b	Direct Sow	May 4th	Jul 18th – Oct 5th
Zone 6a	Direct Sow	May 1st	Jul 15th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jul 9th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jul 4th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jun 24th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	Jun 15th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	Jun 6th – Nov 12th
Zone 9a	Direct Sow	Mar 6th	May 20th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Apr 25th – Dec 9th
Zone 10a	—	Oct 1st	Dec 15th – Feb 28th
Zone 10b	—	Oct 1st	Dec 15th – Feb 28th
Zone 11a	—	Oct 1st	Dec 15th – Feb 28th
Zone 11b	—	Oct 1st	Dec 15th – Feb 28th
Zone 12a	—	Oct 1st	Dec 15th – Feb 28th
Zone 12b	—	Oct 1st	Dec 15th – Feb 28th
Zone 13a	—	Oct 1st	Dec 15th – Feb 28th
Zone 13b	—	Oct 1st	Dec 15th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Taproot
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	75
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Atomic Red’s fine-grained, Danvers-taper structure stays crisp raw and caramelizes evenly in the oven, so it doesn’t go mealy before it browns. The sweetness reads “clean” rather than sugary, which is why it loves citrus, ginger, and warm spice without turning flat.

Best Uses

roasting for caramelized, jammy edges
raw snacking and crunchy slaws that keep their snap
quick pickles for a sweet-tart crunch
blending into silky carrot purée or vibrant soup for color-forward bowls

Flavor Profile

sweetly aromatic sweetness crisp fine-grained bite bright red, slightly earthy carrot flavor

Kitchen Pairings

ginger lemon honey cumin olive oil feta

Frequently Asked Questions

What should I do if my Atomic Red radishes develop frosty white spots or leaf distortion?

This often points to powdery mildew (and sometimes stress-related distortion) in dense foliage. Remove and discard badly affected leaves, then improve airflow by thinning plants to about 2–3 inches apart and keeping weeds down so leaves dry faster. If it keeps spreading, spray an approved potassium bicarbonate or sulfur-based fungicide according to the label and reapply at the label interval.

How often should I water Atomic Red radishes during the main growing period (weeks 2–6)?

Keep the soil consistently evenly moist—aim for about 1 inch of water per week, but adjust so the bed never fully dries out or turns muddy. Check moisture by pressing a finger 1 inch into the soil; water right away if it feels dry, and water more lightly/more frequently after long dry stretches. Inconsistent moisture is a common cause of pithy, woody roots and hot, bitter flavor.

How do I tell when Atomic Red radishes are ready to harvest?

Atomic Red is typically ready about 75 days after sowing, but start checking much earlier—look for roots pushing up at the soil line and a bright red color. Harvest when roots reach about 1 to 1.5 inches across (check by gently pulling one plant), because radishes get pithy if left too long. For best texture, harvest during cool weather and refrigerate right away.