How to grow globe artichoke
Overview
Globe artichoke (Cynara cardunculus var. scolymus) is a perennial thistle grown for its edible flower buds. It is a productive vegetable for home gardens, requiring full sun, well-drained soil, and regular watering. For best yields, harvest buds before the scales open.
Varieties
- Green Globe — The most common variety in Australian gardens, producing large round buds.
- Purple Sicilian — A striking purple variety with a slightly nutty flavour, good for cooler areas.
- Imperial Star — An early-maturing, productive hybrid suited to shorter seasons.
Soil Preparation
Artichokes prefer deep, fertile, well-drained soil with a pH between 6.0 and 7.5. Before planting, incorporate plenty of well-rotted manure or compost. Good drainage is essential to prevent root rot.
Growing Guide
Plant globe artichokes in full sun with rich, well-drained soil. Space plants 1 m apart to allow for large foliage. In temperate and Mediterranean climates, sow seeds in late summer or autumn for harvest the following spring. Alternatively, plant in spring for a late summer harvest. Water deeply and regularly, keeping soil moist but not waterlogged. Mulch heavily to retain moisture and suppress weeds.
Sowing
Sow seeds 1–2 cm deep in seed-raising mix, spacing 5 cm apart. Germination takes 10–20 days at 15–20°C. Start seeds in pots for transplanting, or direct sow in autumn. Thin to strongest seedlings. Transplant when 10–15 cm tall, spacing 1 m apart.
Care
Feed with a balanced fertiliser in early spring and again after the main harvest to support regrowth. After harvesting, cut old flower stems to ground level in autumn to encourage fresh shoots for next season. Apply a thick layer of organic mulch in summer to keep roots cool and retain moisture.
Companion Planting
Globe artichokes benefit from companion planting with sunflowers, tarragon, and marjoram, which may deter pests. Avoid planting near fennel, which can inhibit growth. Attracts bees when allowed to flower, so plant near pollinator-friendly crops.
Common Pests & Risks
Common pests include aphids, which can be controlled with insecticidal soap or strong water spray. Snails and slugs can damage young growth; use organic pellets or traps. Fungal diseases such as powdery mildew may occur in humid conditions; improve air circulation and avoid overhead watering.
Harvesting
Harvest the buds while they are still tight and before the scales begin to open. Cut the stem about 5–10 cm below the bud. For best flavour, harvest in the morning when buds are cool.
In the Kitchen
Globe artichokes are best eaten soon after harvest. Boil or steam whole buds until tender, then remove the choke and enjoy the fleshy bracts and heart. Stuffed artichokes are also popular. Refrigerate unwashed buds for up to a week.
Troubleshooting
Yellowing leaves: often due to overwatering or poor drainage; reduce watering and improve soil drainage. Small or deformed buds: may indicate insufficient water or nutrient deficiency; ensure consistent moisture and feed with balanced fertiliser. Black spots on leaves: likely fungal disease; remove affected leaves and avoid overhead watering. Stunted growth: could be caused by nematodes or poor soil; rotate crops and amend soil with compost. No buds: may be due to too much shade or lack of winter chill; ensure full sun and some winter cold.