The rhubarbs are stately plants, good focal points in well-watered perennial borders or at woodland edges. The large leaves arise directly from stout rhizomes; flowering stalks produce smaller leaves and prominent bracts. Blossoms are individually inconspicuous but are massed in tall, branching, plumy clusters, making a great show in late spring or early summer. Plant usually grow 4 to 10 ft. high and wide.
Grows best in deep, organically enriched soil.Rheum palmatum
From China, Tibet. To 6–8 ft. tall, 6 ft. wide. Nearly round, 2–3-ft.-wide leaves are deeply cut into tooth-edged lobes. Red flower plumes to 2 ft. long. In variety –Atrosanguineum–, the entire plant is suffused with red. Leaves of R. p. tanguticum are less deeply cut than those of the species and often tinted purple; flowers may be white, pink, or red.
This American species grows 40 ft. tall with a rounded crown that may spread 25 ft. has become nearly ...
Native to Iran. Slow growing to 15–35 ft. tall and wide; naturally multistemmed but can be train...
Native Europe to Iran. Dense, pyramidal tree to 40 ft. high and eventually as broad as tall, with droo...