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Herbaceous Perennial

Conopodium majus
  • RHS Plants for pollinators

pignut

The pignut is found in woods, hedges and grasslands, and has ferny, carrot-like, mid-green basal foliage, and in spring and summer carries delicate, white, umbel flowers on stems reaching less than 30cm in height. The small round tuber is a food for badger and human foragers alike

Other common names
earth nut
earth chestnut
see morecneuen y ddaear
Synonyms
Conopodium denudatum
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Moist but well–drained, Poorly–drained
pH
Acid
Colour & scent
StemFlowerFoliageFruit
Spring White Green
Summer White
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Apiaceae
Native to GB / Ireland
Yes
Foliage
Deciduous
Habit
Columnar upright
Genus

Conopodium are a genus of small, perennial herbs. Leaves are divided and the curved stem is smooth, growing up to 1m in height and producing small white flowers. The tubers, similar to a chestnut, are edible and commonly known as pignuts.

Name status

Correct

Plant range
Europe

How to grow

Cultivation

Prefers dryish conditions, well-drained and slightly acidic soils. Found naturally in open grassland and woods

Propagation

Propagate by seed

Suggested planting locations and garden types
  • Wildflower meadow
  • Wildlife gardens
  • Cottage and informal garden
  • Flower borders and beds
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

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