Rudbeckia fulgida var. deamii

20 Oct

Rudbeckia deamii Flower (08/09/2012, Kew Garden, London)

Rudbeckia deamii Flower (08/09/2012, Kew Garden, London)

Position: Full sun to partial shade

Flowering period: Late summer to early autumn

Soil: Moist, well drained

Eventual Height: 1m

Eventual Spread: 50cm

Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b

Family: Asteraceae

Rudbeckia fulgida var. deamii is a deciduous, erect,  herbaceous perennial with a clump forming habit. Its dark leaves are oval with entire margins, hairy, up to 12cm long and 5cm broad.  Its orange/ yellow flowers are daisy like and up to 7cm across.

Rudbeckia fulgida var. deamii, commonly known as Deam’s Coneflower, is native to North America. Rudbeckia fulgida var. deamii is synonymous with Rudbeckia  deamii.

The etymological root of the binomial name Rudbeckia was named for Olof Rudbeck and his son, who was also named  Olof, who were 17th century Swedish botanists. Fulgida is from the Latin meaning ‘shiny’. Deamii is named after Charles Deam (1865 – 1953), an American botanist.

The landscape architect may find Rudbeckia fulgida var. deamii useful in prairie type planting schemes. Once established it is moderately drought tolerant.

Rudbeckia deamii (08/09/2012, Kew Garden, London)

Rudbeckia deamii (08/09/2012, Kew Garden, London)

Ecologically, Rudbeckia fulgida var. deamii is attractive to pollinating insects. Some birds are attracted to its seed heads.

The Royal Horticultural Society has given Rudbeckia fulgida var. deamii their prestigious Award of Garden Merit in 1993.

Rudbeckia fulgida var. deamii prefers moist, fertile, well-drained soils. It tolerates most pH of soil.

Rudbeckia fulgida var. deamii requires little maintenance. Large clumps may be divided in autumn or spring.

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