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Eschscholzia californica Thai Silk Series

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© RHS

Characteristics

Plant type

Annual/Biennial

Habit

Bushy

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Cream, Orange, Pink, Red or Yellow in Summer

Foliage

Blue and Green in Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

1 year


Preferred common name

California poppy Thai Silk Series

Family

Papaveraceae


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

Thai Silk Series are annuals with attractively dissected, blue-green foliage and single or more often semi-double flowers 4-6cm wide, in a range of shades of cream, yellow, orange, pink and red, sometimes with a cream centre

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Exposed or Sheltered

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 container plant. Good for exposed or coastal areas

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand, Chalk or Loam

Propagation

Propagate by seed sown in succession from mid-spring onwards

Suggested planting locations and garden types

Banks and Slopes, City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Gravel Garden or Patio/Container Plants


How to care

Pruning

Cut back after flowering

Pests

Generally pest free

Diseases

Generally disease free