Cosmic Purple

Family: Apiaceae Root Vegetable

Planting Schedule

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Sink your senses into Cosmic Purple’s velvety, inky purple shoulders that glow like starlight above a crisp, sweet core.

This Danvers-style carrot forms a classic tapered silhouette with a smooth, fine-grained texture—tender when young, richly flavored at maturity. Grow it for bold color in fresh salads and vibrant roasted trays, or for deep-toned sauces and pickles that showcase its dramatic purple-to-orange transformation.

Light: Full SunMaturity: 75 DaysHabit: Taproot

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Cosmic Purple 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	Aug 29th – Jul 15th
Zone 1b	Direct Sow	Jun 1st	Aug 15th – Aug 1st
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	Normal
Germination Temp (°F)	55
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Cosmic Purple eats like a classic Danvers—crisp and sweet—while the purple shoulder gives you a visual hit that still tastes clean, not grassy. Heat will swing the color toward orange, so treat it like a color-changing carrot for roasting, pickling, or a silky sauce.

Best Uses

thin ribbons or coins in dressed salads where the color stays vivid
hot-roast trays (high heat) for caramelized edges and a tender core
pickling where the purple-to-orange shift looks great in the jar
blended puree/sauce for a vivid, lightly sweet vegetable base

Flavor Profile

sweet, carrot-candy sweetness crisp, fine-grained bite earthy-sweet with a slightly peppery finish dramatic purple core color that turns orange when heated

Kitchen Pairings

orange ginger honey yogurt cumin goat cheese

Frequently Asked Questions

What pest or disease issue commonly affects Daucus carota (carrots), and how can I control it?

Carrots are frequently hit by carrot fly (adult flies lay eggs near the crown; larvae tunnel into roots). Use row covers over the crop once seedlings emerge, remove weeds/grass that hide flies, and avoid leaving disturbed soil with exposed crowns; if damage appears, pull and destroy affected plants to reduce larval spread. Alternaria leaf blight can also show as dark, spotting lesions—improve airflow with correct spacing and water at soil level, not on the foliage.

How often should I water Daucus carota during the main growing phase to get straight, healthy roots?

During the active bulking period, keep the top 6–8 in (15–20 cm) of soil consistently moist but not waterlogged—typically about 1 inch (2.5 cm) per week total, adjusted for rainfall and heat. Water deeply after the soil surface begins to dry slightly, and avoid letting the soil swing from very dry to very wet, which can cause root cracking. Mulch lightly once seedlings are established to stabilize moisture.

How do I know when my Cosmic Purple carrots are ready to harvest?

Start checking around 70–75 days; the shoulders should be clearly visible above the soil line and feel firm when you gently brush soil away. For the best color and tenderness, harvest before roots get overly large—pull one as a test and cut it to confirm the purple outer area has developed through the root. If tops are wilting excessively in heat, harvest promptly to prevent woody roots.