Table of Contents
Growing globe artichokes and Jerusalem artichokes can be a rewarding experience for gardeners interested in edible plants. Although their names are similar, these two plants are quite different in their growth habits, care requirements, and culinary uses. Understanding these differences can help you decide which to cultivate in your garden and how to care for them properly.
Understanding the Plants
Globe artichokes (Cynara cardunculus var. scolymus) are perennial thistles native to the Mediterranean region. They produce large, edible flower buds that are harvested before they bloom. Jerusalem artichokes (Helianthus tuberosus), also known as sunchokes, are tall, perennial plants related to sunflowers. They produce edible tubers that grow underground and are harvested in the fall.
Growing Globe Artichokes
Globe artichokes prefer a mild climate with cool, moist winters and warm, dry summers. They thrive in well-drained, fertile soil with plenty of organic matter. To start, plant young crowns or seedlings in early spring after the last frost date. Space plants about 3 to 4 feet apart to allow room for growth.
Ensure consistent watering during the growing season to keep the soil moist but not waterlogged. Mulching helps retain soil moisture and suppress weeds. Fertilize with a balanced fertilizer in early spring and again during the growing season for optimal growth.
Globe artichokes are heavy feeders and benefit from regular feeding. In colder climates, mulch heavily or consider growing them in containers that can be moved indoors during winter. Harvest the buds when they are firm and tightly packed, typically in late spring to early summer.
Growing Jerusalem Artichokes
Jerusalem artichokes are hardy and adaptable plants that can grow in a variety of soils and climates. They prefer full sun and well-drained soil. Plant tubers in early spring, about 4 to 6 inches deep and 12 inches apart. They can be grown in garden beds or containers.
Once established, Jerusalem artichokes require minimal care. Water during dry periods and weed regularly. They are tolerant of poor soil conditions and can thrive with minimal fertilization, although adding compost or organic fertilizer can boost growth.
The plants grow tall, often reaching 6 to 10 feet, and produce vibrant yellow flowers in late summer. Harvest the tubers after the first frost or when the foliage dies back in late fall. Be cautious, as the tubers can spread easily and become invasive if not managed properly.
Comparison and Tips
- Climate: Globe artichokes prefer Mediterranean climates; Jerusalem artichokes are more adaptable.
- Growth habit: Globe artichokes are perennial thistles; Jerusalem artichokes are tall sunflower relatives.
- Harvest: Artichoke buds are harvested before blooming; Jerusalem tubers are dug in fall after foliage dies back.
- Care: Globe artichokes need regular watering and fertilizing; Jerusalem artichokes are low-maintenance.
- Invasiveness: Jerusalem artichokes can spread aggressively; control by planting in containers or using barriers.
By understanding the specific needs and growth habits of each plant, gardeners can successfully cultivate both globe and Jerusalem artichokes, enjoying their unique flavors and benefits throughout the year.