peganum from Henfield, England / CC BY-SA 2.0
garden
Cardoon
Cynara cardunculus
EdibleMedicinalDrought Tolerant
Overview
The wild ancestor of the artichoke, cardoon is a dramatic thistle-like perennial grown for its thick, celery-like leaf stalks rather than its flower buds. A staple of Mediterranean and Argentine cuisine, the stalks are blanched to reduce bitterness and then braised, battered, or gratinéed. Its massive silvery foliage and towering purple thistle flowers make it one of the most architectural plants in the edible garden.
Growing Conditions
LightFull Sun
MoistureModerate
Hardiness Zones6 — 10
Height2m
Spread1m
Growth HabitForb/herb
Pollinator Valuehigh
Companion Planting & Soil
Good Companions
Soil pH6 — 7.5
Soil TypeDeep, fertile, well-drained soil
Planting Calendar
When to sow, transplant, and harvest by growing zone.
| Zone | Action | Months | Notes |
|---|---|---|---|
| Cold (1-2) | Start Indoors | Feb — Mar | Start indoors 6-8 weeks before last frost; grow as annual |
| Cold (1-2) | Transplant | May — Jun | Transplant after frost; blanch stalks 3-4 weeks before harvest |
| Cold (1-2) | Harvest | Aug — Sep | Blanch stalks by wrapping in cardboard 3-4 weeks before harvest; eat stalks not buds |
| Cool (3-4) | Start Indoors | Jan — Feb | Start indoors; needs long growing season |
| Cool (3-4) | Transplant | Apr — May | Transplant in spring; grows 4-6 feet tall and wide |
| Cool (3-4) | Harvest | Jul — Sep | Blanch stems; harvest inner stalks; peel and cook |
| Moderate (5-7) | Transplant | Mar — Apr | Transplant in spring; perennial in zones 7+; impressive ornamental |
| Moderate (5-7) | Harvest | Jul — Oct | Harvest blanched stalks in fall; pare away fibrous outer layer |
| Moderate (5-7) | Divide | Mar — Apr | Divide established clumps every 3-4 years in spring |
| Warm (8-9) | Transplant | Sep — Oct | Plant in fall; perennial in zones 8-9 |
| Warm (8-9) | Harvest | Feb — Apr | Harvest spring stalks; blanch to reduce bitterness |
| Hot (10+) | Transplant | Sep — Oct | Fall planting; evergreen perennial in zone 10 |
| Hot (10+) | Harvest | Jan — Mar | Late winter/early spring harvest |
Uses
Culinary
- Blanched stalks braised in broth or cream
- Battered and fried as fritters
- Traditional ingredient in Argentine and Italian holiday dishes
Medicinal
- Contains cynarin for liver and gallbladder support
- Traditional digestive bitter
- Leaf extract studied for cholesterol-lowering properties
Other Uses
- Dramatic ornamental garden architecture
- Thistle flowers attract pollinators and are used in dried arrangements
