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Herbaceous Perennial

Cathcartia chelidoniifolia

A deciduous perennial bearing nodding, primrose-yellow, poppy-like flowers of 2-3cm (1-1.5in) in mid-to late summer. Slender, branched stems scramble upwards to a height of 1m (3ft) and have lobed, softly hairy, pale green leaves.

Synonyms

Meconopsis chelidoniifolia

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Ultimate height

0.5–1 metres

Time to ultimate height

1–2 years

Ultimate spread

0.5–1 metres

Loam

Sand

Clay

Moisture

Moist but well–drained

pH

Acid, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Partial shade

Aspect

East–facing or North–facing or West–facing

Exposure

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)

Botanical details

Family: Papaveraceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming, Climbing
Name status: Correct
Plant range: SW China

How to grow

Cultivation

Grow in light or dappled shade on fertile, neutral to slightly acidic soils that retain mosture in summer. Prefers a sheltered position, protected from cold drying winds.

Propagation

Propagate in spring by seed sown thinly on to the surface of peat-free seed compost and keep moist. Light is required for germination. Alternatively, propagate by offset buds that form in the upper leaf joints, as they appear. See Propagate from cuttings (climbers)

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Flower borders and beds
Wall side borders

Pruning

No pruning required. Removed withered stems in autumn/winter

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to downy mildews

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