When to plant Artichoke
Computed from land-grant Extension planting-window rules (cited below), localized to real ZIP-level median frost dates, not a single national guess. These are national-generic rules by hardiness class; individual state Extension offices layer their own regional adjustment on top (earlier in the Deep South, later in the Upper Midwest). Enter your ZIP for your own dates, or read the four representative locations below.
Planting windows and crop timing here are computed from USDA/NOAA climate data and the university extension sources cited below, not a site visit or soil test. Treat this as a starting point: local conditions vary, and a local nursery or extension office can advise on your exact site. See our full Disclaimer.
Representative timing, by climate band
When to plant Artichoke in four US climates
Each column is the most nursery-dense location in our directory within that USDA zone band, computed from that location's own real median frost dates, not a made-up example.
| Stage |
Zones 1-5 (cold winters)
Fort Plain, NY |
Zones 6-7 (temperate)
McMinnville, TN |
Zones 8-9 (warm)
Apopka, FL |
Zones 10-13 (hot, frost rare or absent)
Loxahatchee, FL |
|---|---|---|---|---|
| Start seed indoors | Jan 7–Feb 18 | Dec 9–Jan 20 | Oct 28–Dec 9 | – |
| Direct-sow outside | Not available | Not available | Not available | – |
| Transplant outside | Apr 8–Apr 15 | Mar 10–Mar 17 | Jan 27–Feb 3 | – |
| Fall planting | Not available | Not available | Not available | – |
| Expected harvest | Aug 6–Aug 23 | Jul 8–Jul 25 | May 27–Jun 13 | – |
Zones 10-13 (hot, frost rare or absent) (Loxahatchee, FL): Frost is rare here (about 359 frost-free days a year); most years see little or no hard freeze. This is a tender crop. In climates like this one, tender and very-tender crops typically go in before the hottest months arrive, not on a frost-relative schedule.
Artichoke goes in the ground before your last frost, not after it, even though it is a tender crop that frost can still damage. Utah State University Cooperative Extension's Artichoke in the Garden (HG/2003/03) puts transplanting three to four weeks ahead of your area's frost-free date, because artichoke needs a real stretch of cool weather to trigger flowering, a process called vernalization, before it will set a bud at all.
That reversal is the whole story with this crop: a plant frost can still hurt gets planted while frost risk is highest, on purpose. Utah State is the only source held for artichoke. The sow-indoors figure shown, eleven to seventeen weeks before your last frost, and the 120-to-130-day maturity estimate are both worked backward from Utah State's stated calendar (seed started in early January, needing two to three months to reach transplant size, harvest arriving late July or early August) rather than numbers the publication states outright, and this page carries both as derived rather than dressing them up as a direct citation.
No minimum soil temperature is held for artichoke. Utah State gives a 70-to-75°F figure, but for indoor seed germination, not for outdoor soil at transplant time, so it is left off this page rather than repurposed into a claim the source never made. In a cold-winter climate, that early transplant date means protecting young plants against a late frost is part of the deal; in a mild-winter climate the vernalization period can come from winter itself, and artichoke is more often grown as a short-lived perennial there.
Nurseries carry artichoke mostly as started plants or bare-root divisions rather than as seed on the shelf, because the long vernalization-dependent seed-to-transplant timeline above is hard to hit from a spring seed packet. An already-vernalized transplant in early spring is the more forgiving way to buy into this crop.
Frost hardiness
Tender. Damaged or killed by frost. Plant after the last frost date.
Days to maturity
120–130
Sourcing notes
Sole source (Utah State HG/2003/03) after failed attempts to find a Clemson or other second land-grant source specifically for artichoke. Deliberately unusual pattern: plants ARE frost/freeze sensitive (tender), yet must be TRANSPLANTED 3-4 weeks BEFORE the frost-free date because the crop needs a period of cool temperatures to initiate flowering (vernalization) - the opposite timing of most tender crops. Sow-indoors figure (11-17wk before last frost) is derived, not stated directly: source says start seed in early January, needing 2-3 months (8-13wk) to reach transplantable size, then transplant 3-4wk before the frost-free date - so seed-starting falls roughly 11-17wk before last frost depending on the exact frost date; flagged as derived. DTM (120-130 days) is similarly derived from the source's stated harvest onset ("late July or early August") relative to the transplant timing, not an explicit days-to-maturity figure - flagged as approximate. No soil temp for outdoor planting was given; the source's 70-75F figure is an air temp for indoor SEED GERMINATION, not a direct-planting soil temp, so it was not placed in the min_soil_temp_f field.
Related crops
Growing zones for this crop
Nurseries near these locations
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Sources
- Utah State University Cooperative Extension, Artichoke in the Garden (HG/2003/03) (accessed 2026-08-04)