🥔 Laurentian Rutabaga
What it looks like
Why this variety
Laurentian is the rutabaga that improved on a classic: developed in Canada and grown in North America since at least the early 1900s, it is described in catalogs as an improved version of American Purple Top, with smoother, more uniform globe-shaped roots, deep purple crowns, creamy yellow skin below ground, and pale yellow flesh that is notably sweet and mild. If American Purple Top is the heirloom standard, Laurentian is the refined edition — same virtues, fewer rough edges.
Uniformity matters more than it sounds: smooth, globe-shaped roots peel easily, cook evenly, and store without the soft spots that start in cracks and crevices, which is why market growers have favored Laurentian for generations. The flavor is sweet and fine-grained, with a mildness that makes it the rutabaga for people who think they do not like rutabagas — roast it, and the sweetness does the persuading.
If you are new to choosing between cultivars, the Varieties Matter guide explains why the name after the plant matters as much as the plant itself. And if you want the whole clan at a glance, the broader Rutabaga guide covers rutabaga generally.
How to grow
In Florida, rutabaga is a fall crop that pays you back for patience: sow it in fall, let the roots size up through the mild months, and harvest after a frost or two, because cold is what turns a rutabaga from merely good to sweet and mellow. It needs a long, cool runway — around three months — so the fall sowing is the whole strategy, and a spring sowing that runs into summer heat will give you woody roots and a plant in a hurry to flower. In the north and center of the state it is a reliable winter keeper; farther south, keep it to the coolest months and treat it as a trial.
Sow in fall like other rutabagas, thin to 6 inches apart, and give it deep, loose soil and steady water for the full 95 days — Laurentian rewards patience with roots up to a pound each, but it punishes a late sowing or a dry spell with smaller roots than its reputation promises. Mulch well, feed with compost, and keep the bed weed-free while the roots are sizing up.
Water & feeding
Rutabagas size up on steady moisture in deep, loose soil — a checked, drought-stressed root turns woody and forked, and no amount of butter fixes that. Water deeply and regularly, mulch to hold moisture, and feed with compost; keep the bed stone-free so the roots grow straight and smooth.
Common problems
The same brassica troubles apply — flea beetles, root maggots, clubroot in tired soil — and the same defenses work: row cover, rotation, and a soil pH near neutral. Laurentian’s smooth skin is an advantage at harvest, not a defense in the ground, so do not skip the row cover just because the roots look tidy in the catalog photo.
Harvest
Harvest at 4–6 inches across, after frost for the sweetest flavor, and store cool and humid for months. Laurentian is excellent mashed with butter, roasted in chunks, or cut into soups and stews, where its fine grain holds together instead of dissolving — a root that keeps its dignity in a long simmer is a root worth planting.
Nerdy fact: Laurentian was developed in Canada, a place with long, cold winters and a short growing season — which is exactly why it is such a good winter keeper. A root bred for a cold climate stores like it expects winter, because it does.
Saving seeds
Laurentian is the rutabaga that improved on a classic, developed in Canada and grown in North America since at least the early 1900s, an improved version of American Purple Top, open-pollinated, so saved seed comes true — sow in fall like other rutabagas, thin to 6 inches apart, and give it deep, loose soil and steady water, remembering rutabagas are biennials that seed in their second year. The full method is in the Saving seeds section of the Rutabaga guide.