Edible Storage Roots
Produces large underground storage roots with crisp, juicy flesh and a naturally sweet, mildly fruity flavor.
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Yacon, botanically known as Smallanthus sonchifolius, is an Andean root vegetable grown for its large, crisp, juicy underground storage roots. Also called Peruvian Ground Apple, this unusual plant develops tall leafy stems, broad green foliage, and small yellow-orange sunflower-like flowers. Yacon can be grown in home vegetable gardens and suitable outdoor planting areas. It prefers warm growing conditions, fertile soil, consistent moisture, and a long growing season. Although it can grow from true seeds, propagation is more commonly carried out using divisions of the underground crown.
Produces large underground storage roots with crisp, juicy flesh and a naturally sweet, mildly fruity flavor.
Develops small yellow-orange flowers that resemble miniature sunflower blooms under suitable growing conditions.
Forms upright, branching stems with large green leaves that create a substantial garden presence.
A traditional South American root crop that adds variety to home vegetable gardens and edible landscapes.
| Scientific Name | Smallanthus sonchifolius |
| Common Name | Yacon; Yacón; Peruvian Ground Apple |
| Plant Family | Asteraceae |
| Seed Type | Edible Root Vegetable Seeds |
| Plant Type | Herbaceous Perennial Root Vegetable |
| Origin | Andean Region of South America |
| Growth Habit | Tall, upright, branching growth |
| Root Type | Fleshy underground storage roots |
| Root Color | White, cream, yellowish, or purple, depending on variety |
| Flower Color | Yellow to orange-yellow |
| USDA Hardiness Zones | Generally suited to warmer climates; frost-sensitive and requires seasonal protection in colder areas |
| Planting Season | Spring, after the danger of frost has passed |
| Growing Season | Spring through autumn |
| Sowing Season | Spring to early summer |
| Sowing Months | March to June, depending on local climate |
| Seed Starting | Can be started indoors in warm, moist growing medium |
| Seed Germination | Variable and often irregular; seed viability can differ considerably |
| Germination Temperature | Warm conditions; approximately 27–32°C may be used for experimental seed starting |
| Sunlight Requirements | Full sun to partial shade |
| Soil Requirements | Fertile, loose, moisture-retentive, well-drained soil |
| Watering | Regular watering to maintain consistent soil moisture |
| Mature Plant Height | Approximately 3–7 feet, depending on growing conditions |
| Plant Spacing | Approximately 20–40 inches, depending on variety and growing space |
| Harvesting Season | Autumn to early winter, depending on climate and planting time |
| Propagation Method | True seeds, crown divisions, and stem cuttings |
| Growing Locations | Outdoor vegetable gardens, garden beds, and suitable large growing areas |
Yacon is an interesting addition to home vegetable gardens, producing large underground storage roots beneath tall, leafy plants. Its Andean origin, sunflower-like flowers, and crisp, naturally sweet roots make it a distinctive vegetable to grow. Provide warm growing conditions, fertile soil, consistent moisture, and enough time for root development. Remember that true seed propagation can be challenging, while crown divisions are the more commonly used planting material.
Learn about Yacon seed germination, edible storage roots, and the difference between planting roots and propagation crowns.
Yacon can grow from true botanical seeds, but seed propagation is uncommon because seed production and germination can be unreliable. Gardeners more commonly propagate Yacon using divisions of the underground crown that contain healthy growing buds. The large edible storage roots alone generally cannot produce new shoots once separated from the crown.
Yacon generally needs several months of active growth before its underground storage roots are ready for harvesting. Depending on the climate, planting time, and variety, harvesting commonly takes place in autumn or early winter. Allow the plant to develop throughout the growing season and harvest when the above-ground growth begins to decline.
Yacon produces two different underground structures. The large, fleshy storage roots are harvested for eating, while the smaller crown or rhizome structure at the base of the stems contains buds used to grow new plants. For propagation, use crown divisions with healthy growing points rather than planting an ordinary detached storage root.