Native to Iran. Slow growing to 15–35 ft. tall and wide; naturally multistemmed but can be trained to a single trunk. Oval, 3–6-in.-long leaves have wavy margins; the upper half is shallowly toothed. Choice, colorful tree, attractive in all seasons. The most dramatic display comes in autumn: leaves usually turn golden yellow, then orange or rosy pink, and finally scarlet. Smooth gray bark flakes off to reveal white patches; showy when on display in winter. Dense clusters of tiny flowers with red stamens and woolly brown bracts appear in late winter or early spring before leaves open; they give the plant an overall reddish haze. New foliage unfurls reddish purple, matures to lustrous dark green. Prefers slightly acid soil but tolerates alkaline soil.
From southern Europe and western Asia. Grows to 8–10 ft., with medium green leaves comprising fi...
Leaves are edged in gold.
The rhubarbs are stately plants, good focal points in well-watered perennial borders or at woodland ed...