Darklet

Family: Apiaceae Root Vegetable

Sink your spoon into Darklet’s dense, creamy heart—its flavor is richly nutty with a cool, celery-green brightness and a whisper of sweetness.

At maturity, this celeriac forms a broad, knobby crown with smooth, tight flesh that stays pleasantly firm, making it a standout for roasting, puréeing, and velvety sauces. Grow Darklet for a dependable, long-season harvest that rewards patience with a beautifully textured, spoon-ready root.

Light: Part SunMaturity: 120 DaysHabit: Upright

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

Crop Dates

Milestone	Date
Start Indoors	Feb 14th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 18th
Harvest Begins	Aug 16th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	120
Sun Requirements	Part Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	35
Harden Off (days)	6

Culinary Notes

Chef's Note

Darklet’s dense, tight flesh turns silky without collapsing, so it’s built for a purée that stays cohesive and a roast that eats spoon-first. The cool celery-green and nutty sweetness play beautifully with browned fats and sharp acids—no need to drown it; just let it get golden.

Best Uses

roasted wedges (browned edges, creamy center for spooning)
velvety purée with butter/cream for a clean, cool finish
thick soups or chowders where it holds body without turning gluey
rapid braises or pan-sears of diced celeriac for caramelized edges

Flavor Profile

nutty, celery-green brightness slightly sweet finish dense, spoonable creamy texture with a firm bite

Kitchen Pairings

brown butter garlic black pepper thyme apple cider vinegar Gruyère

Frequently Asked Questions

What pest or disease most commonly affects Apium graveolens var. rapaceum (celeriac), and how do I treat it?

Celery leaf spot and early blight–type leaf diseases can show up as brown spots on leaves, especially in warm, humid weather. Remove any heavily spotted leaves, water at the soil line (not over the foliage), and improve airflow by thinning if plants are crowded. If conditions stay wet, apply a labeled fungicide that’s approved for celery/celeriac use and follow the label timing—repeat only as directed.

How often should I water celeriac during the main growing phase, and what soil moisture level should I maintain?

From when seedlings establish until the bulb/hip starts swelling, keep soil consistently moist but not soggy—aim for the top 1–2 inches to stay evenly damp. In typical home gardens this often means watering about 1–2 times per week, increasing frequency during hot spells, while using enough water to wet the root zone. Avoid letting the soil fully dry out, because irregular moisture can lead to misshapen celeriac and poorer texture.

How can I tell when celeriac (Apium graveolens var. rapaceum) is ready to harvest?

Harvest at about 120 days from sowing/transplanting, or when the celeriac “bulb” reaches a firm, full size with a smooth, well-formed surface. The leaves should look strong and mostly intact; if frost hits, you can harvest right after the first light freezes for best flavor and tenderness. Use a spade to lift carefully and trim roots/leaves promptly to prevent drying.