Rudbeckia fulgida var. speciosa

Rudbeckia speciosa 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: 80cm

Eventual Spread: 60cm

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

Family: Asteraceae

Rudbeckia fulgida var. speciosa is a deciduous, herbaceous perennial with a clump forming habit. Its dark leaves are lanceolate to ovate with entire margins, hairy, up to 13cm long and 6cm broad.  Its orange/ yellow flowers are daisy like and up to 7cm across. Its roots are rhizomes which aids its spread.

Rudbeckia fulgida var. speciosa, commonly known as Black Eyed Susan, is native to east North America. Rudbeckia fulgida var. speciosa is synonymous with Rudbeckia speciosa. In its native habitat the species inhabits the grassland prairies.

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’. Speciosa is from the Latin meaning ‘spectacular’.

The landscape architect may find Rudbeckia fulgida var. speciosa useful in prairie type planting schemes. Once established this plant is drought tolerant. It is unattractive to rabbits and deer.

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

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

The Royal Horticultural Society has given  Rudbeckia fulgida var. speciosa their prestigious Award of Garden Merit in 2002.

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

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

 

Rudbeckia fulgida var. sullivantii ‘Goldsturm’

Rudbeckia ‘Goldsturm’ flower (06/08/2011, London)

Position: Full sun to partial shade

Soil: Moist, well drained soil

Flowering period: Summer and autumn

Eventual Height: 75cm

Eventual Spread:50cm

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

Family: Asteraceae

Rudbeckia fulgida var. sullivantii ‘Goldsturm’ is a deciduous herbaceous perennial with a clump forming habit. It has narrow, rough, mid green leaves clumped around erect flower bearing stems. Its flowers which are 12cm across are borne in late summer to autumn, are terminal, hermaphroditic and daisy like with golden, conical flower heads that have dark centres.

Rudbeckia fulgida var. sullivantii ‘Goldsturm’, commonly known as the Orange Coneflower (as well as Echinacea) or Black Eyed Susan, was introduced by Karl Foerster in 1937 after being spotted by his employee Heinrich Hagemann at a botanic garden in Czechoslovakia.

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 means ‘shiny’ or ‘glittering’ in Latin . Sullivantii was named for William Starling Sullivant, a 19th century American biologist.

Rudbeckia ‘Goldsturm’ (06/08/2011, London)

The landscape architect may find Rudbeckia fulgida var. sullivantii  ‘Goldsturm’ useful as a low maintenance herbaceous perennial with a long flowering period. It is suitable for planting en mass and for prairie style planting. Its stiff erects stems make this plant particularly suitable for the commercial landscape as is does not require staking.

The royal horticultural society gave Rudbeckia fulgida var.  sullivantii ‘Goldsturm’ their prestigious Award of Garden Merit in 1993.

Rudbeckia fulgida var. sullivantii  ‘Goldsturm’ will tolerate almost any soil conditions; it will be happy at neutral, alkaline or acid pH levels, in loam, clay or chalk based soils, preferring an east, west or south facing sheltered or exposed aspect

Ecologically, Rudbeckia fulgida var. sullivantii ‘Goldsturm’ will attract various species of pollinating insects such as honey bees and butterflies. Various species of terrestrial gastropod along the with the larval stage of some species of lepidoptera will feed on its foliage.

Rudbeckia fulgida var. sullivantii ‘Goldsturm’ may be dead-headed early in the season to prolong the flowering period. The seed heads may be left for the winter months for interest, the plant may then be cut to ground level in late winter just before the spring shoots appear. Large clumps of this flower may be divided in spring.