Very rapid spreading, very tall perennial native to China and Japan.
Plants are good for the backs of large borders and specimen plantings only, because of their size ( up to 10x8 feet or 3,00x2,50m ) and potentially invasive rhizomes.
BUT used in the right setting; the Plume Poppies are SPECTACULAR!!!
The handsome, deeply-lobed foliage is very large, to 20 inches / 50 cm wide. The leaves are blue-green above and whitish beneath.
The creamy-white flowers are borne on plume like panicles up to 3 feet long, during mid to late summer.
Info source: rslandscapedesign.blogspot.com
Genus - Macleaya
Species - Cordata
Common name - Plume Poppy
Pre-Treatment - Not-required
Hardiness zones - 3 - 8
Height - 5'-7' / 1.5m - 2.1m (5)
Spread - 2'-3' / 0.6m - 0.9m
Plant type - Flower, Perennial
Vegetation type - Deciduous
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.
Germination rate - 79%
Bloom season - July - September
Leaf / Flower color - Green / Creamy white