Cynara cardunculus var. altilis

Family: Asteraceae Vegetable

Unfurling from a sturdy rosette, Cardoon ‘Cynara cardunculus var.

altilis’ offers a dramatic, silvery-green presence with tender, lightly bitter hearts that grow more mellow as plants mature. Expect a crisp, succulent texture with a refined, earthy flavor that shines in bold preparations—roasted until bronzed, simmered into silky sauces, or preserved for tangy, long-lasting bites. A striking garden centerpiece at 90 days, it rewards patience with harvestable stems and hearts that feel as luxurious as they look.

Light: Full SunMaturity: 90 DaysHabit: Rosette

Botanical illustration of Cynara cardunculus var. altilis

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Mar 14th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 18th
Harvest Begins	Jul 17th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	5

Culinary Notes

Chef's Note

Cardoon’s bitterness is the whole point: when you roast or braise it, those stems go from crisp-succulent to creamy-soft while the flavor turns artichoke-like instead of harsh. Pair with lemon, olive oil, and salty umami (anchovy or parmesan) to sharpen and round the edges without muting the signature bite.

Best Uses

deep roast until bronzed and slightly caramelized
braise in stock to turn stems into spoonable tenderness
simmer into a velvety sauce for pasta or gratins
pickle or preserve for sharp, long-lasting tang

Flavor Profile

silvery-leaning, refined bitterness crisp-tender succulent stems earthy, artichoke-adjacent flavor melts into silky texture when cooked

Kitchen Pairings

lemon olive oil parmesan anchovy butter white wine

Frequently Asked Questions

What pest or disease most commonly affects artichoke (Cynara spp.) and what should I do if I see symptoms?

A frequent problem is fungal leaf spot/gray mold (often worsened by persistent leaf wetness) and, in warm weather, aphids that can also spread viruses. Remove heavily spotted leaves and keep foliage dry by watering at the soil line, then space plants to improve airflow. If you start seeing aphids, spray a strong jet of water off the plants first and repeat as needed; for severe infestations use an insecticidal soap, targeting the undersides of leaves.

How often should I water artichokes during the main growing phase?

During active growth, keep the soil evenly moist but not waterlogged—aim for deep watering about 1–2 times per week depending on heat and soil drainage. Water when the top 1–2 inches of soil feel dry, especially as flower heads start forming, because stress can reduce head size and quality. Mulch around the base helps stabilize moisture and prevents the crown from drying out.

How can I tell when artichoke heads are ready to harvest?

Harvest when the buds are fully developed and the bracts are still tight, typically before the blue/purple inner flowers show. Use the timing cue at about 90 days from sowing/planting (varies by your season), then check daily during the final week because heads can open quickly. Cut the head with 1–2 inches of stem; you can often harvest subsequent side shoots after the first cut.