Papaver 'Shasta' (Super Poppy Series)

RHS Plant Profile

poppy 'Shasta'

Herbaceous Perennial

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A perennial poppy, to 90cm high, with bristly stems and finely divided, hairy green leaves. In late spring to early summer, large, cup-shaped flowers are produced, with ruffled, near white petals flushed with pale rose at the base, and a striking dark purple centre

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or West–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Papaveraceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy, Columnar upright
Genus: Papaver can be annuals, biennials or herbaceous perennials with simple or pinnately divided leaves and short-lived, saucer-shaped, 4-petalled flowers which may be solitary or in racemes
Name Status: Accepted

How to Grow

Cultivation

Will thrive in most soils, as long as there is good drainage, but a moderately fertile, humus-rich soil that is not too acidic is ideal. Position in full sun and provide support, as stems can flop after heavy rain (see staking perennials)

Propagation

Propagate by division in spring, or by root cuttings in late autumn and early winter

Suggested planting locations and garden types

Cottage and informal garden
Flower borders and beds

Pruning

Cut spent flowering stems back to the ground, cut back foliage as it fades

Pests

May be susceptible to aphids

Diseases

May be susceptible to downy mildews, powdery mildews, fungal wilts and verticillium wilt