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Annual Biennial

Eschscholzia californica 'Ivory Castle'
  • RHS Plants for pollinators

California poppy 'Ivory Castle'

'Ivory Castle' is a bushy annual to about 35cm with finely divided, blue-green foliage and single, creamy-white flowers in summer

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green
Summer Cream White Yellow Blue Green
Autumn Blue Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H3
Botanical details
Family
Papaveraceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Eschscholzia can be annuals or perennials, with finely divided leaves and solitary, long-stalked, poppy-like yellow, orange or red flowers, followed by conspicuous long seed-pods

Name status

Accepted

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How to grow

Cultivation

Will thrive in poor, well-drained soil but they need full sun for the flowers to open. Can be grown as a drought-tolerant pot plant. Good for exposed or coastal areas

Propagation

Propagate by seed sown in succession from mid-spring onwards

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Banks and slopes
  • Flower borders and beds
Pruning

Cut back after flowering

Pests

Generally pest free

Diseases

Generally disease free

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