Nadmorska

Family: Brassicaceae Root Vegetable

Sweetly earthy and gently nutty, Nadmorska rutabaga develops a smooth, fine-grained flesh that feels velvety under the fork and turns richly caramelized when roasted.

Its firm, uniform roots hold their character through cool-season growing, delivering dependable flavor for hearty seasonal favorites—ideal for roasting, mashing, and slow-simmered sauces, with a natural sweetness that shines in pickling too. Grow it for a satisfying harvest around 90 days, when the roots reach their best balance of tenderness and depth.

Light: Full SunMaturity: 90 DaysHabit: Rosette

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	Jul 24th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	45
Min Soil Temp (°F)	40
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Nadmorska rutabaga cooks into a velvety mash and roasts into real caramel—its sweetness shows up only after the heat softens that brassica edge. It’s the kind of root you can treat like potatoes’ sturdier cousin: holds shape in soups, then turns silky when mashed.

Best Uses

roasting until deeply browned and edges caramelize
mashing with butter/cream for a smooth, spoonable texture
slow-simmered rutabaga-forward soups and braises
quick pickling for crisp, sweet-tart slices

Flavor Profile

sweetly earthy nuttiness fine-grained, velvety-fork-tender flesh gentle bitterness that mellows with heat caramel-sweet when roasted

Kitchen Pairings

smoked pork mustard (Dijon/stone-ground) butter or browned butter apple cider vinegar bay leaf black pepper

Frequently Asked Questions

What are the most common pests or diseases on Brassica napus var. napobrassica (swede/“turnip cabbage”), and how do I control them?

Check regularly for cabbage root fly and clubroot, plus leaf-eating caterpillars. To reduce root fly, use a fine row cover from sowing until plants are established, and avoid planting in the same bed within 3–4 years. For clubroot, keep soil evenly moist (not soggy) and adjust pH toward neutral/slightly alkaline with lime if your soil tests low, then remove and destroy infected plants.

How often should I water Brassica napus var. napobrassica during the main growing phase?

During active leaf growth and bulbing (about weeks 4–10), keep the soil consistently moist, aiming for roughly 1 inch (2.5 cm) of water per week split into 1–2 deep waterings. If the top few inches dry out between waterings, bulbing can stall or become woody; if puddles form or soil stays wet, risk disease like clubroot. Water at the base and avoid wetting leaves to limit foliar problems.

How can I tell when Brassica napus var. napobrassica is ready to harvest?

Harvest around 90 days after sowing when the swollen roots (the turnip-like bulb) reach the size you want and the tops are vigorous but starting to decline. They’re usually ready when the crown is near the soil surface and the bulb feels firm rather than spongy when gently pressed. For best quality, pull before prolonged freezing weather; exposed bulbs can be bruised, so lift carefully with a fork.