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Sunchoke

Helianthus tuberosus

Also listed as Helianthus tomentosus, Helianthemum tuberosum

Also known as Sunroot, Earth Apple, Jerusalem artichoke

herbaceous☀️ full sun💧💧 moderate water❄ Hardy: Zone 2b – Zone 9b

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A tall perennial with sunflower-like yellow blooms and edible tubers that develop underground. Grows vigorously and can spread aggressively, making it useful as both an ornamental and food crop.

Why grow it

Jerusalem artichoke produces edible tubers with a nutty flavor and yields more calories per acre than many root crops, making it practical for food production in poor soils where other vegetables struggle. The plants flower reliably in most climates and require minimal fertilizer or pest management once established, reducing input costs compared to conventional vegetable cultivation. Unlike potatoes, the tubers can remain in the ground and be harvested incrementally through winter.

Watch out for

Tuber yield and size vary considerably depending on soil quality and moisture availability, so productivity may be unpredictable on marginal sites. The plants are quite tall (often 6 to 10 feet) and may shade nearby plantings or require staking in windy locations. Some people experience digestive discomfort when consuming large quantities of raw tubers due to their inulin content, so gradual introduction is advisable.

Overview

Form
Upright
Growth Rate
fast
Size
5–9.8′ tall × 1–2′ wide
Dormancy
deciduous
Family
Asteraceae
biomass/mulchdynamic accumulatorediblewildlife benefit

Native to the United States

Native Range

Central and North America

Native to: Alabama, Arkansas, Colorado, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, West Virginia, Wyoming

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Harvest Season

J
F
M
A
M
J
J
A
S
O
N
D

Edible Parts

rootflowerleaf

Season of Interest

SummerFall

Notable Cultivars

Common cultivars include 'Fuseau' (smoother tubers, easier to peel) and 'Red Burgundy' (red-skinned, high yield). Both are widely grown for culinary use and storage.

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Companion Planting

Plants well with