Rheum, commonly known as rhubarb, is a bushy cultivar of the Rheum genus, which comprises sturdy herbaceous perennials growing from rhizomes. This cultivar features deciduous foliage and thrives in fertile, moist but well-drained loam soil with an acid to neutral pH. Suitable for full sun or partial shade and various garden aspects, it is hardy to UK zone H6. Its tall stems bear large clusters of small flowers, making it an architectural addition to cottage, informal, wildlife, and flower border gardens during spring and summer.

Rhubarb (Rheum) thrives in full sun or partial shade, hardy to RHS H6, ideal for architectural and wildlife gardens with spring and summer interest.

Rheum

It is an extraordinary species of rhubarb (genus Rheum). At 1–2 m tall, the monocarpic inflorescences of R. nobile tower above the other shrubs and low herbs in its habitat, and it is visible across valleys from several kilometres. R. nobile is often called a glasshouse plant because of its outer curtain of translucent bracts which pass visible light, creating a greenhouse effect, while blocking ultraviolet radiation. These are likely defenses against the increased UV-B exposure and extreme cold in its high altitude range. It is native to Afghanistan, East Himalaya, Myanmar, Nepal, Pakistan and other regions. In the garden it prefers full sun and partial shade and loam soil. In UK gardens it is very hardy across most of the UK (RHS H6). Suggested uses include architectural, cottage and informal garden, wildlife gardens and flower borders and beds. It tolerates acid and neutral soils, moist but well-drained conditions and south-facing, east-facing, north-facing and west-facing aspects.

Rheum nobile, commonly known as Sikkim rhubarb, is a robust perennial in the Polygonaceae family. Characterized by its substantial lobed leaves and tall stems, this species produces large clusters of small flowers, adding unique texture to any plant collection.

https://en.wikipedia.org/wiki/Rheum_nobile

Rheum nobile

Rheum webbianum is a species of herbaceous perennial rhubarb-relative in the family Polygonaceae from the southwestern Himalayan region, known in (Indian) English as Indian rhubarb, Gilgiti rhubarb or small Himalayan rhubarb. In the wild it grows across Nepal, Pakistan, Tibet and West Himalaya. Grow it in full sun and partial shade and loam soil. In UK gardens it is very hardy across most of the UK (RHS H6). It works well for architectural, cottage and informal garden, wildlife gardens and flower borders and beds. It tolerates acid and neutral soils, moist but well-drained conditions and south-facing, east-facing, north-facing and west-facing aspects. Plant in well-drained soil. Water during establishment.

Small Himalayan rhubarb (Rheum webbianum) is a robust herbaceous perennial belonging to the Polygonaceae family. Known also as Gilgiti rhubarb, it features substantial foliage and tall stems that bear clusters of small flowers, offering an intriguing addition to any botanical collection.

https://en.wikipedia.org/wiki/Rheum_webbianum

Rheum webbianum

Rheum x hybridum 'Poulton's Pride' is a bushy cultivar of rhubarb, a genus of sturdy herbaceous perennials known for their large foliage and tall stems with clusters of small flowers. This deciduous plant thrives in full sun or partial shade and prefers fertile, moist but well-drained loam soil with an acid to neutral pH. Suitable for a variety of garden settings including architectural, cottage, and wildlife gardens, it is hardy to UK zone H6. Best propagated by division in spring, 'Poulton's Pride' offers seasonal interest in both spring and summer.

Rhubarb 'Poulton's Pride' is a hardy, bushy perennial with large foliage and tall stems, ideal for architectural and wildlife gardens in spring and summer.