Rheum Species, Noble Rhubarb, Sikkim Rhubarb
Rheum nobile
| Family: | Polygonaceae |
| Genus: | Rheum (REE-um) (Info) |
| Species: | nobile (no-BIL-ee) (Info) |
Category:
Perennials
Water Requirements:
Average Water Needs; Water regularly; do not overwater
Sun Exposure:
Full Sun
Sun to Partial Shade
Foliage:
Grown for foliage
Herbaceous
Foliage Color:
Height:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing:
36-48 in. (90-120 cm)
Hardiness:
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Where to Grow:
Danger:
Parts of plant are poisonous if ingested
Bloom Color:
Cream/Tan
Bloom Characteristics:
Bloom Size:
Bloom Time:
Mid Summer
Other details:
Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information:
Non-patented
Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Regional
This plant is said to grow outdoors in the following regions:
Knik-Fairview, Alaska
Lakes, Alaska
Meadow Lakes, Alaska
Tanaina, Alaska
Wasilla, Alaska
Gardeners' Notes:
| Rating | Content |
|---|---|
| Positive | On Sep 27, 2009, jrtinker from Palmer, AK (Zone 3b) wrote: The Alaska Rock Garden Society collected a small amount of seed from Big Snow Mountain in Yunnan in 2000. Of this seed, one plant germinated and continues to grow. This summer (2009) the garden where it has been growing was sold, and the plant was transplanted to a new location in August. It appears to have survived the move, but we won't really know if it is happy in the new location until it has survived a winter there. |
| Neutral | On Jul 1, 2006, Dacooolest from Brandon, MB (Zone 2b) wrote: The noble rhubarb (Or as it is called in the Himalayas, chuka) is a giant perennial grown as a vegetable. AN interesting note about this plant, the translucent bracts that go over the flowers let visible light through, but not UV radiation. This creates a greenhouse effect that protects the flowers from intense cold! It also prevents UV radiation from hurting the flowers. |
