When to Plant Artichokes
Dramatic thistle relative producing large, edible flower buds. Perennial in zones 7-10, grown as annual elsewhere.
The Short Answer
How to Grow Artichokes
Globe artichokes are dramatic, architectural plants — 4 feet tall with silvery, deeply cut leaves. The edible 'artichoke' is actually an immature flower bud. In zones 7-10, artichokes are perennial and produce for years from a single planting. In cold zones, treat as annual: start seed in January, vernalize seedlings at 50°F for 10 days to trick the plant into thinking it experienced winter, then transplant in spring. Imperial Star is bred specifically for annual production. Even if you never harvest a single bud, artichoke plants are stunning ornamentals.
Starting Seeds Indoors
Begin artichokes seeds indoors 8 weeks before your average last frost date. Seeds need soil temperatures of at least 60°F to germinate, which typically takes 10-14 days. Provide 12 hours of light per day using a south-facing window or grow lights.
Transplanting
Move seedlings outside 0 weeks after your last frost date, once soil temperatures reach 60°F. Harden off seedlings for 10 days before transplanting by gradually exposing them to outdoor conditions.
Growing Tips
In zones 7+ they're perennial — plant once and harvest for years. In cold zones, treat as annual: start seeds in January and vernalize seedlings at 50°F for 10 days to trigger bud formation. Spectacular ornamental even when not harvesting.
Companion Planting
Good companions:
Artichokes Planting Dates by State
Click your state for artichokes planting dates specific to your location:
Last reviewed: March 29, 2026