Not the plant you're looking for? Search over 300,000 plants
Annual Biennial

Platystemon californicus

cream cups

A variable species of annual, to around 30cm high, with a branching, spreading habit and linear to lance-shaped, hairy grey-green leaves. Solitary, poppy-like, cream or pale yellow flowers, sometimes with golden yellow markings on the petals, are produced on slender stems in spring

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

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H5
Botanical details
Family
Papaveraceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy, Spreading branched
Name status

Unresolved

How to grow

Cultivation

Thrives in very light, well drained soil in full sun, flowering is reduced in high humidity

Propagation

Propagate by seed sown in situ in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Gravel garden
  • Rock garden
  • Wildflower meadow
  • Flower borders and beds
Pruning

Deadhead where seed is not required

Pests

Generally pest-free

Diseases

Generally disease-free

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.