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Plant guide

Globe Artichoke.

Cynara cardunculus

Pronounced sin-AR-uh kar-DUN-kyoo-lus

Also known as Cardoon, Globe Artichoke, Artichoke thistle, Scottish thistle, Spanish artichoke, Wild Cardoon

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The globe artichoke is a striking perennial thistle that produces delicious edible flower buds. It adds a dramatic architectural flair to any garden with its large, silvery foliage. You will love watching these unique plants develop their signature harvestable hearts.

At a glance

Care level
Moderate
Plant type
Perennial vegetable
Light
Full sun
Indoor light
Direct sun
Water
Every 3 to 7 days
Mature size
5 feet tall and wide
Growth rate
Fast
Hardiness
USDA 7 to 10
Bloom time
Mid to late summer

Care

Plant in deep, fertile soil and ensure it has plenty of space to spread out. Watch for aphids on the undersides of leaves and keep the soil consistently moist during the growing season. If the leaves start to yellow, it might be a sign of poor drainage or nutrient deficiency.

Watering
Keep the soil consistently moist but never waterlogged to encourage healthy bud development.
Feeding
Apply a balanced organic fertilizer monthly during the active growing season.
Pruning
Cut back the main stalk to the ground after the final harvest to encourage new growth.
Repotting
If growing in a container, move to a larger pot every year or two as the root system is quite extensive.
Soil
Rich, well draining loam
Soil pH
6.5 to 7.5
Temperature
-10 to 35°C
Humidity
40 to 70%
Drought tolerance
High
Lifespan
Perennial, typically 5 to 10 years
Fragrance
Light
Deer and rabbits
High

Signs it needs repotting

  • Roots growing out of the drainage holes
  • Stunted growth during the active season
  • Soil drying out too quickly

Safety

People
The plant is generally non-toxic, though some people may experience contact dermatitis from the stiff hairs on the leaves.
Children
The sharp spines on the leaves and stems pose a physical injury risk to small children.
Contact allergens
The sharp spines and coarse hairs on the leaves can cause skin irritation upon handling.
Airborne allergens
The pollen can trigger mild reactions in sensitive individuals during the peak flowering season.
Edibility
The flower buds and leaf stalks are edible when prepared correctly, but ensure you are not harvesting from areas treated with pesticides.

How to identify it

  • Large, deeply lobed silvery green leaves
  • Thistle like purple flower heads
  • Sturdy, upright central flowering stalks
  • Spiny bracts surrounding the edible heart
Height
1.2 to 1.8m
Spread
0.9 to 1.2m
Leaves
silvery-green, gray-green, semi-evergreen
Flowers
purple, blue-violet, 7 to 12cm
Fruit
brown, Late summer

Problems to watch for

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    Growing it

    Propagation
    seed, division
    When to plant
    spring, early autumn
    Overwintering
    In colder climates, cut back the foliage after the first frost and mulch the crown heavily to protect it from freezing temperatures.
    In containers
    It can grow in large containers, but requires a pot at least 50 centimeters deep to accommodate its long taproot.

    Seed

    1. 1. Sow seeds indoors in late winter.
    2. 2. Use deep pots to accommodate the taproot.
    3. 3. Transplant outdoors after the last frost.

    Division

    1. 1. Dig up the plant in early spring.
    2. 2. Separate the offsets from the main crown.
    3. 3. Replant immediately in well-drained soil.

    Plant cardoons as a dramatic centerpiece in a Mediterranean-style border with low-growing herbs.

    Grows well with

    • Fennel · The feathery foliage of fennel provides a nice textural contrast to the bold, silvery leaves of the cardoon.
    • Lavender · Lavender shares similar requirements for full sun and well-drained soil.

    Similar species

    • Globe Artichoke · It is a close relative selected specifically for its large, edible flower buds.

    Science

    Family
    Asteraceae
    Genus
    Cynara
    Order
    Asterales
    Class
    Magnoliopsida
    Native range
    Mediterranean region
    Conservation
    This species is not of conservation concern and is considered invasive in some Mediterranean-climate regions outside its native range.

    It thrives in sunny, well-drained slopes where its deep taproot helps it access moisture during dry summers.

    Value to wildlife
    nectar source
    Pollinators
    bees, butterflies
    Uses
    ornamental focal point, culinary vegetable, dried flower arrangements

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    3/9
    Soil reaction
    7/9
    Light
    8/9
    Temperature
    7/9
    Moisture
    4/9
    Nutrients
    6/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Is the cardoon the same as an artichoke?
    They are the same species, but the cardoon is bred for its stalks and leaves, while the artichoke is bred for its flower buds.
    How do I prepare cardoon for eating?
    The stalks must be blanched to reduce bitterness and then boiled or braised until tender.

    Where the name comes from

    The name Cynara comes from the Greek word for dog, referring to the spiny, tooth-like bracts of the flower head.

    Good to know

    • Cardoons have been cultivated since ancient Roman times.
    • The plant is a staple ingredient in traditional Italian and Spanish winter dishes.
    • Its dramatic, thistle-like flowers are highly attractive to pollinators.
    • The leaves can reach up to 1 meter in length.

    Also in

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    This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.