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Jerusalem Artichoke

Helianthus tuberosus

vegetable

Jerusalem artichokes are hardy perennials grown for their knobby underground tubers, not true artichokes. They are vigorous, sunflower-like plants that produce bright yellow flowers in autumn and are extremely cold-hardy and low-maintenance once established. They spread readily and can become invasive.

Common Problems

Select the problem your Jerusalem Artichoke is experiencing to get a treatment guide.

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Yellow Leaveschevron_right

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Slow Growthchevron_right

Care Guide

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Light

Full sun (6–8 hours minimum) for best tuber production and flowering.

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Water

Drought-tolerant once established; water moderately during growing season. Approximately 1 inch per week. Overwatering can lead to rot.

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Soil

Tolerates poor to average soil; prefers well-draining loam. pH 5.5–7.5. Amend with compost to improve structure. Performs well even in neglected sites.

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Fertiliser

Light feeder; minimal fertilizer needed. Light application of balanced fertilizer (5–5–5) in spring sufficient. Excessive nutrients promote foliage over tubers.

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Temperature

Very cold-hardy perennial; thrives in cool to moderate temperatures. Requires winter dormancy and frost exposure for tuber development.

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Humidity

Low to moderate humidity tolerated. Prefers drier conditions; avoid overhead watering and humid environments.

Toxicity

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Jerusalem artichokes are safe; tubers are edible. Raw tubers may cause digestive discomfort in sensitive individuals due to inulin content.

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.