Cardoon Planting Guide
Planting cardoon in May
cardoon rewards gardeners who pay attention to a few basics. Here's what matters in May, wherever you're growing.
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How to water cardoon
About an inch of water a week keeps cardoon happy. Check your weather forecast before watering — skip if rain is coming.
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Where to put cardoon
South-facing beds are ideal for cardoon. Shade from nearby trees or fences costs real production.
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Check your local forecast before planting
Your zone determines the exact week to plant cardoon. Pick your county below and we'll line everything up against your frost dates.
Cardoon is a large thistle relative of the artichoke, grown for its edible leaf stalks. It has dramatic silvery foliage and makes a striking ornamental as well.
Cynara cardunculus · Vegetable · Asteraceae family · 120–150 days to maturity
Get Your Personalized Cardoon Planting Dates
Enter your ZIP code to see exact planting dates, soil compatibility, and growing tips specific to your county.
Where Can You Grow Cardoon?
Cardoon Growing Regions
Click any state to see the Cardoon planting schedule for that location.
Planting Dates by Zone
| Zone | Start Indoors | Direct Sow | Transplant | Harvest |
|---|---|---|---|---|
| Zone 7a | — | — | Apr 8 | Aug 12 – Sep 23 |
| Zone 7b | — | — | Apr 1 | Aug 5 – Sep 16 |
| Zone 8a | — | — | Mar 22 | Jul 26 – Sep 6 |
| Zone 8b | — | — | Mar 11 | Jul 15 – Aug 26 |
| Zone 9a | — | — | Feb 24 | Jun 30 – Aug 11 |
| Zone 9b | — | — | Feb 8 | Jun 14 – Jul 26 |
| Zone 10a | — | — | Jan 15 | May 21 – Jul 2 |
| Zone 10b | — | — | Jan 15 | May 21 – Jul 2 |
Why are some columns showing "—"?
Start Indoors shows "—" because Cardoon is typically direct sown outdoors rather than started indoors. It germinates quickly and doesn't transplant well.
Direct Sow shows "—" because Cardoon benefits from being started indoors first, then transplanted after the last frost.
How to Plant Cardoon
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
Water when the top inch of soil feels dry. Consistent moisture produces the best results.
🧪 Soil pH
6 – 7.5
Prefers neutral to slightly acidic soil — ideal for most garden beds.
🗺️ Hardiness Zones
Zone 7a – 10b
📅 Days to Maturity
120–150 days
Long-season crop. Start indoors in cold climates to get a head start.
👪 Plant Family
Asteraceae
Rotate with other families yearly to prevent soil-borne diseases. Don't plant in the same spot where Asteraceae family crops grew last year.
How Much Cardoon to Grow
Cardoon takes 120–150 days to mature. In most zones you'll get one harvest per season, so plant enough to last.
Companion Planting for Cardoon
✅ Good Companions
❌ Keep Away From
Check more combinations with our Companion Planting Checker →
Growing Tips for Cardoon
Blanch stalks by wrapping with cardboard or tying leaves together 3-4 weeks before harvest. Provide deep, rich soil and consistent moisture. Protect from hard frost.
Saving Cardoon Seeds
Recommended for Your Garden
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Keep your garden organized with durable, weather-resistant plant labels.
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Cardoon by State
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Frequently Asked Questions
How long does it take to grow Cardoon?
Cardoon (Cynara cardunculus) takes 120 to 150 days from planting to harvest. Exact timing depends on your variety, growing conditions, and USDA zone.
What zones can Cardoon grow in?
Cardoon can be grown in USDA zones 7a through 10b. Use the planting calendar above to find the exact dates for your zone.
How much sun does Cardoon need?
Growing Cardoon requires Full Sun (6-8+ hours), Moderate — regular watering, and soil pH of 6 to 7.5.