What it is
Celeriac (Apium graveolens rapaceum) is in the Apiaceae (Carrot) family. Celery's knobby root cousin - a storable, nutty-flavored winter vegetable that keeps for months.
How to grow it
It wants full sun, water it high, and give it rich, moist soil. Target a soil pH around 6.0-7.0. Space plants about 8-10 in apart. Expect roughly 100-120. Long cool-season.
How it's used
Celeriac is used: roasted, mashed, raw, stored.
🔎 How to identify it
- Celery-like leaves
- Swollen knobby root
- Strong celery aroma
Edibility
How to grow & propagate celeriac
Everything I've worked out about starting this one, keeping it alive through a Texas year, and turning one plant into many — free.
How to propagate celeriac
The carrot family carries a long taproot and does not want to be moved, so sow it in place. The seed is slow and needs steady moisture to germinate — never let the top of the soil dry out during those first two weeks. Let one plant bolt and flower and it'll hand you next year's seed in those lacy umbels, plus feed every beneficial insect in the yard.
Growing celeriac in Texas
Give it full sun and rich, moist soil. Match the spot to the plant and most of the battle is already won.
This is a cool-season crop. On the Texas Gulf Coast that means your real windows are fall and late winter, not summer — sow as the heat breaks in September–October and again in late winter, and you'll harvest through our mild winters while the rest of the country is frozen out.
Keep moisture even, especially while it's young — deep, less-frequent soaks build better roots than a daily sprinkle.
Harvesting
Figure on roughly 100-120 before you're harvesting. Harvest at peak and keep harvesting — most vegetables produce harder the more you pick, and one left to over-mature tells the plant its job is done. The part you're after: root.
Making more for free
Every seed we sell is open-pollinated, which means you can save your own from the best plants and it'll grow true next year. Let a few of your strongest plants finish and go to seed, dry it fully, and store it cool and dark. That's the whole point of heirlooms — buy once, grow forever.
Keep this knowledge offline
A garden full of celeriac is a real asset when times get hard — but the know-how to grow, store, and use it shouldn't live only on a website you can't reach. That's why I keep a copy of the references I rely on on a local server at home. Project NOMAD is a free, open-source way to run Wikipedia, survival and medical guides, maps, and even a private AI on your own hardware — knowledge that keeps working with no internet, no cloud, no signal.
See how I keep my library offline →Part of the free Texas Roots plant database, compiled by Jordan Polasek from his greenhouse in El Campo, Texas. Free to read and share. If it helped, the best thanks is to grow something.