Growing Caraway: A Complete Profile
By Growing Home Greens Team · August 10, 2026
Caraway is grown for its seed, the familiar flavor in rye bread and sauerkraut, and that changes the whole shape of the crop compared to a leafy annual herb. It’s a true biennial: plant it this year, and it won’t set the seed you’re after until next summer.
A two-year commitment from one sowing
Direct-sow 1/4 inch deep in early spring or fall. Germination takes 10 to 14 days. Whichever season you sow in, the plant spends its first year as a low, ferny rosette and only bolts, flowers, and sets seed in its second summer. Space plants 4 to 8 inches apart; mature flowering stalks reach 24 to 36 inches.
Because nothing worth harvesting happens in year one, caraway needs a spot it can occupy for two full seasons rather than a square you’re planning to rotate through annually.
Harvest before the seed shatters
Cut or pull whole plants as the seed heads begin to ripen but before they shatter and drop seed on their own, since a caraway plant that’s fully dry in the field will lose much of its harvest to the ground. Dry the cut seed heads down to about 10% moisture at no more than 100°F before storing.
Young plants need help against weeds
Caraway seedlings are slow and poor competitors against weeds in their first year, so keep the bed clean while the rosette is establishing. It prefers full sun and well-drained sandy loam; heavy, wet soil is a bigger threat to a young plant than cold ever is.
Caraway has no well-established companion pairings, and nothing it needs to be kept away from. Because it occupies its square for two years, plan its spot in the Garden Designer around what else needs that space, rather than assuming it rotates out after one season like most annual herbs.
Source: Caraway: Key Growing Information, Johnny’s Selected Seeds.
Companion planting guide for Caraway · Find your planting dates
Typically viable in USDA zones 3-8. Not sure your zone? Look it up by ZIP code.
Mature height: 2-3 ft
Method: Direct sow: Direct-sow outside. It doesn't transplant well, or doesn't need the extra time indoors.
When to plant caraway, by zone
Every zone caraway grows in. Pick your zone in the header and it will be highlighted here. Each zone links to its full page.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 3a & 3b | Not usually | May 9–May 16 | About a year after planting |
| 4a & 4b | Not usually | Apr 24–May 1 | About a year after planting |
| 5a & 5b | Not usually | Apr 19–Apr 26 | About a year after planting |
| 6a & 6b | Not usually | Apr 4–Apr 11 | About a year after planting |
| 7a & 7b | Not usually | Mar 20–Mar 27 | About a year after planting |
| 8a & 8b | Not usually | Mar 4–Mar 11 | About a year after planting |
See exact start-indoors, direct-sow, and harvest dates for your zone →
How many Caraway plants fit per square foot?
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Varieties worth considering
- Straight-species caraway (Carum carvi): Johnny's Selected Seeds sells it as the plain species; there's no meaningful named-cultivar market for a crop grown almost entirely for its seed rather than fresh use. The species is what every rye bread and sauerkraut recipe calling for caraway means. (source)
Why each variety is listed comes from the source shown next to it. We haven't grown these ourselves yet, so treat this as a research-backed starting point, not a personal endorsement. The buy links are separate from those sources: they go to seed suppliers that sell that exact variety, and we may earn a commission on some of them.
Where to buy caraway seeds
True Leaf Market (each supplier's caraway seeds)
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See it growing
Search YouTube for "growing caraway" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Caraway: A biennial grown for its seed, not its leaves, that spends its whole first year as a low rosette before finally flowering in its second summer.
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