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Herbaceous Perennial

Smallanthus sonchifolius

earth apple

A rhizomatous perennial usually grown as an annual to provide an edible crop of tuberous roots which are mildly sweet, crisp and juicy. Large, triangular leaves are borne on stems up to 1.5m tall and small, yellow, daisy-like flowers are borne from late summer into early autumn

Other common names
yacon
Synonyms
Polymnia sonchifolia
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Size
Ultimate height
1–1.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Green
Autumn Yellow Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Asteraceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus

A genus of rhizomatous flowering perennials, native to South America, with bushy green foliage and daisy-like yellow flowers. Some cultivars are grown as vegetables, with the potato-like tubers tasting similar to a pear with a texture like water chestnuts

Name status

Correct

How to grow

Cultivation

Grows best in a fertile, moist but well drained soil in full sun with shelter from strong winds to prevent damage to the leaves. Plant outside only when the risk of frost has passed.

Propagation

Propagate by seed, by cuttings or by division of rhizomes

Suggested planting locations and garden types
Pruning

No pruning required

Pests

Slugs and snails may be troublesome

Diseases

May be affected by cucumber mosaic virus and powdery mildews

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