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Rutabaga

Brassica napus var. napobrassica

Rutabaga is a cold-hardy root vegetable grown for a fall to early-winter harvest. Its broad, low foliage and developing roots make it a useful crop for a dedicated cool-season bed rather than a tight gap among long-lived plants. Brassica napus var. napobrassica takes about 90 days to mature, so reserve the space for much of the latter growing season. Cool weather and frost can improve its sweetness.

Sunlight Full Sun
Water Regular
USDA zones 2–11
Spacing 0.5 ft
Mature size 1.5 ft tall, 1.5 ft wide
Harvest Fall - early winter

Placement and use

Place rutabaga in the open middle of a sunny vegetable bed, where its roughly 18-inch height will not shade shorter crops. A block planting makes thinning, watering, and lifting roots simpler than scattering plants through ornamental borders. Keep one side of the planting within easy reach of a path or bed edge so foliage and roots can be checked without stepping into the row. Beans, peas, onions, lettuce, spinach, and chamomile can share the broader plan; keep it apart from strawberries and tomatoes.

Spacing and mature footprint

Set plants 6 inches apart, center to center, after thinning. Individual plants can carry foliage up to about 18 inches wide, so treat that wider spread as the working canopy of the group, especially along paths and beside slower neighboring crops. Use the 6-inch centers to fill the crop row, but leave a clear edge for harvesting and avoid squeezing the row between permanent plantings or bed structures.

Three plants set 0.5 ft apart, center to center; shaded circles show the 1.5 ft mature spread.

Sun, water, and soil

Give rutabaga full sun and regular moisture from germination through root enlargement. A well-drained, fertile bed with enough depth for the roots is a sound fit; avoid a site that dries rapidly or holds standing water. Plan irrigation access before sowing, since consistent moisture is particularly important as the roots approach harvest size.[1][2]

Seasonal notes

Plan this as a fall crop, counting back roughly 90 days from the desired harvest window and allowing time for cool weather to arrive during root development. The bed remains occupied into early winter, so do not assign it to a quick follow-on crop. Harvest can begin in fall and continue into early winter, with frost adding sweetness while roots remain in the ground.[1][3]

Planning caveats

Keep rutabaga out of a location where clubroot has been present; a long break from rutabagas in that soil is needed before returning the crop there. Its foliage also benefits from an accessible position where covers can be installed if leaf-feeding insects become a problem. Make that room part of the bed layout rather than crowding the crop against a fence or another tall row.[1]

Growing facts

Botanical name
Brassica napus var. napobrassica
Type
Vegetable
Category
Vegetables
Lifecycle
annual
USDA hardiness zones
2–11
Sunlight
Full Sun
Water
Regular
Plant spacing
0.5 ft
Mature size
1.5 ft tall, 1.5 ft wide
Days to maturity
90
Harvest season
Fall - early winter
Pollinator friendly
No
Deer resistant
No
Native to North America
No

References

  1. Rutabaga - Brassica napus Napobrassica Group — North Carolina Extension Gardener Plant Toolbox
  2. Growing Rutabagas in the Home Garden — UGA Cooperative Extension
  3. Turnip | Home Vegetable Gardening — Illinois Extension

Editorial content updated 2026-07-20.