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ORNAMENTAL PLANTS OF HORTICULTURE VALUE

Selection of perennials

Plagiorhegma Maxim. (Jeffersonia Barton)
Plagiorhegma, twinleaf
Podophyllaceae, formerly in Berberidaceae

Only two species, one in North America, the other in northeastern Asia.

P. dubium Maxim. [Jeffersonia dubia (Maxim.) Benth. et Hook.].

Plagiorhegma dubium
Far East (Primorskiy Region, Amur River basin) and northeastern China. Deciduous broadleaved forests, on humus-rich soil, in shade.

Plant with rhizome. Flowering stem 8-10 cm, elongating after flowering to 20-30 cm. Leaves long-petiolate, with almost circular blade, dark red during flowering period, later green. Flowers solitary, 3-5 cm in diam., pale lilac. V - early spring to beginning of autumn. Fl - April-May for two weeks. Fr - June-July. P - by division and seed. Flowering the third year after sowing. Recommended for group planting on well-drained soil, and for the rock garden. Can grow in full sun and in semishade. Z 4.

SELECTION OF PERENNIALS
 
 
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