Very rapid spreading, very tall perennial native to China and Japan.
Plume-poppy is cultivated as a garden plant, and readily persists in waste areas and around houses. Its plumes of white flowers bloom in July and August, atop clusters of large, dull green, deeply lobed leaves.
The handsome, deeply-lobed foliage is very large, to 50 cm wide. The leaves are blue-green above and whitish beneath.
Install new plants during autumn or early spring only. Pest and disease problems are very rare, if slugs do occur treat by spreading diatomacous earth on the soil around the plant.
Deadhead old flower stems, cut plants down to close to groundlevel during late autumn.
Genus - Macleaya
Species - Cordata
Common name - Plume Poppy
Pre-Treatment - Not-required
Hardiness zones - 3 - 8
Height - 1,50 - 2 m
Spread - 0,60 - 0,90 m
Plant type - Flower, Perennial
Exposure - Full Sun, Partial Shade
Growth rate - Fast
Soil PH - 6.1-7.5 (mildly acidic to neutral)
Soil type - Well drained, moist
Water requirements - Average water needs. Water regularly, no overwatering
Landscape uses - A very ornamental plant, it can be grown as an isolated specimen in a lawn. An excellent plant for sub-tropical bedding.
Bloom season - July - September
Leaf / Flower color - Green / Creamy white
Seeds should be sown in the early spring. No special pre treatment required.
Sow in moist soil, keep warm and in light position (no direct sunlight for germination). Germination in 2 weeks but can be irregular and spread out over 4-6 weeks.
When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter.
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