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Zone
Zones 2B, 3-7, 14-17, 31-41
Full SunPartial Sun
Full, Partial
Ample Water
Ample
Toxicity
Leaves are toxic if ingested.

Rheum palmatum

Ornamental rhubarb
Polygonaceae
Deciduous, Perennials

RHEUM

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.

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