Quarryhill Botanical Garden

Advancing the Conservation, Study, and Cultivation of the Flora of Asia

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Featured Plants

Idesia polycarpa

The Igiri tree, as it is known in Japan, is dioecious (separate male and female individuals), reaching 8 - 21 meters in height with deep green, coarsely serrated leaves on red-tinged petioles.  Yellow-green flowers appear in April and May (or later, in cultivation) on panicles, 20-30 cm in length, with male (staminate) flowers slightly larger than female (pistillate) flowers.  Stunning berries follow in October and November, turning from purple-red to orange-red, 8-10 mm, adorning the female trees in clusters resembling loose bunches of grapes, drying to black with age.  The Igiri tree naturally occurs in deciduous broad-leaved and mixed forests at 400-3000 meters in elevation in China, Japan, and Korea, and is popular as an ornamental.  Cultural requirements for this species include full sun to part shade, with regular water in moderately fertile, well-drained soil.