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:

Unknown - Tell us

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:

Unknown - Tell us

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

Cream/Tan

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Other details:

Unknown - Tell us

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 has been said to grow in the following regions:

Wasilla, Alaska

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
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.

June 2011 Update. The plant has survived another winter, though it was very late to come out of dormancy this year. Other plants are crowding it a bit, so I need to clear some
space around it, and give it a good manure mulch like the yaks in it's native habitat.

February 2013 Update. I purchased seed for Rheum Nobile from Horizon He... read more

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.

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