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Rudbeckia - Coneflower

Rudbeckia

Coneflower

I've never met a Coneflower I didn't like. Certainly a select few are among my favourites, but they all add their own bit of colour to the mid to late summer garden. Pure yellow, yellow with burgundy, mahogany or deep bronze tones, orange splashes on yellow petals, most with a deep brown central cone, they are all a delight. Daisy-type flowers can be small to very large, the plants themselves can come in various sizes as well. Single- or double-flowered - you'll welcome them all. Certainly this genus would be sorely missed from our late summer gardens.

PRONUNCIATION rood-BECK-ee-uh
COMMON NAME Coneflower,   Gloriosa Daisy,   Black-Eyed Susan
SYNONYMS 
DERIVATIONnamed after Olaf Rudbeck, a Swedish botanist
FAMILY Compositae - Daisy
TYPE there are annual, biennial and perennial species
USEScut flowers, containers, border filler, some good for mass plantings
FLOWER single or double, daisy-like heads of ray florets or petals, surrounding central cones or disk florets that produce seeds
COLOURvaries from one species to another
FOLIAGEbasal leaves are oval to lance-shaped, some may be lobed, usually rough-surfaced or hairy
stem leaves are usually smaller than basal leaves
COLOURvaries
HARDINESSmost perennial forms are hardy to Zone 3
EXPOSUREfull sun generally preferred, tolerates light shade
SOILwell-drained, moist, of only average fertility
WATERduring dry spells, drought-tolerant once established
HEIGHTfrom dwarf forms to 9' giants
SPREADfrom 6"-24" depending on species or cultivar
BLOOMgenerally from mid to late summer until autumn
STAKINGonly required for taller species
DEADHEADa matter of preference;  flowerheads can be left to ripen for the birds, for winter interest & for self-seeding
PROBLEMSaphids, downy mildew, powdery mildew, rust are possible but occur rarely
AFTERCAREif tall forms become floppy, cut them back close to the ground to encourage new growth
FALL CAREcut to ground
PROPAGATIONdivision autumn or spring every 2-3 years;spring divisions will bloom same year, fall divisions the following year
seed:  see below
SEED CULTURE sow seed indoors March 1 at 70 deg.F/21 degC; germination occurs in 20 days; sow outdoors in May
FERTILIZERnot necessary
MULCH 
FORMS
Rudbeckia fulgida:  Orange Coneflower, 30-36", orange-yellow
var. sullivanti 'Goldsturm' - compact, 18-24"x18"
 
Rudbeckia hirta:  Gloriosa Daisy, biennial or self-seeding annual, 18-36"x12"
'Goldilocks' - 14-24", double or semi-double bright golden yellow flowers
'Irish Eyes' - 30", single yellow flower, green eyes
'Marmalade' - 24-30"x24", large golden-orange blooms
'Rustic Dwarfs' - compact, colours of yellow, bronze, mahogany, orange
 
Rudbeckia laciniata:  Ragged Coneflower, Green-Headed Coneflower, 3-6', yellow flowers with green centres
'Gold Drop' - 24-30"x14", double soft yellow, ball-shaped blooms
'Golden Glow' - old favourite, 3-5', double flowers
'Goldquelle' - Gold Fountain Coneflower, 36"x24", compact, double chrome-yellow flowers
 
Rudbeckia maxima:  Giant Coneflower, 6-7'x2', Zone 6 hardy, orange-yellow, grey-green foliage
 
Rudbeckia nitida:  Shining Coneflower, similar to R. laciniata but with unlobed oval leaves
'Herbstsonne' - Autumn Sun Coneflower, 5-8'x3'
 
Rudbeckia purpurea: Purple Coneflower
see Echinacea purpurea

 
OFF-SITE IMAGES Numerous Rudbeckia images and helpful growing information about this genus can be found at the
National Garden Bureau Inc.
site.
COMPANION PLANTSPLANT PARTNERSHIPS

The images below show the variety of colour and form of our plants in this genus.

Rudbeckia - yellow & mahogany Rudbeckia 'Goldquelle' Rudbeckia - yellow & orange Rudbeckia - golden-yellow Rudbeckia with Miscanthus sinensis 'Silberpfeil' Rudbeckia with purple Larkspur & deep purple Clematis

Rudbeckia with variegated Obedient Plant Rudbeckia amid two different Ornamental Grasses

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BLUE PERENNIALS    Aconitum - Geranium  |  Iris - Vinca

BULBS    Allium - Hyacinthus  |  Narcissus only  |  Tulipa only  |  Minor Bulbs

BUTTERFLY MAGNETS    Anaphalis - Hemerocallis  |  Liatris - Veronicastrum
DAYLILIES      Spider & Unusual Form

EDGERS    Arabis - Iris  |  Nepeta - Veronica

FOLIAGE PERENNIALS     Alchemilla - Tanacetum

HOSTA    Hosta - all

HUMMINGBIRD-FRIENDLY PERENNIALS    Alcea - Salvia

ORANGE PERENNIALS    Achillea - Tulipa

ORNAMENTAL GRASSES    Acorus - Imperata |  Miscanthus - Spodiopogon

PINK PERENNIALS    Achillea - Lilium  |  Lychnis - Veronica

PURPLE PERENNIALS    Aconitum - Liatris  |  Polemonium - Veronica

RED PERENNIALS    Achillea - Veronica

SHADE PERENNIALS    Aegopodium - Erythronium  |  Ferns - Polemonium  |  Polygonatum - Vinca

SILVER FOLIAGE PERENNIALS    Achillea - Cerastium    |    Cornus - Limonium    |    Lunaria - Veronica

SIMPLY SPECIAL PERENNIALS    Acanthus - Saxifraga

WHITE PERENNIALS    Achillea - Iris  |  Kalimeris - Yucca

YELLOW PERENNIALS    Achillea - Hypericum  |  Inula - Verbascum

VARIEGATED-FOLIAGE PERENNIALS    Acorus - Erythronium  |  Hakonechloa - Lysimachia  |  Miscanthus - Yucca

PLANT PROFILES

Dianthus 'Tiny Rubies'  |  Geranium  |  Geum coccineum  |  Kerria japonica  |  Knautia macedonica

Paeonia tenuifolia  |  Papaver somniferum  |  Rudbeckia  |  Salvia 'East Friesland'

Trollius  |  Veronica 'Sunny Border Blue'

PROPAGATION

DIVISION - SPRING ONLY  |   DIVISION - FALL ONLY  |   DIVISION - SPRING OR FALL  |   DO NOT DIVIDE

FERTILIZATION

BULBS  |   ORNAMENTAL GRASSES  |   PERENNIALS  |   SHRUBS  |   VINES

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