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Rudbeckia maxima

Phonetic Spelling
rud-BEK-ee-a MAKS-ih-muh
Description

Rudbeckia maxima, or Large Coneflower, is a herbaceous perennial in the daisy family that is easily grown in average, moist, well-drained soils in full sun. It is an easy-going plant that tolerates light shade, heat, some drought, nighttime visits from deer, and a wide range of soils. It can be grown from seed, but in ideal growing conditions, it will self-seed.  It also propagates itself through rhizomes.  Plant it in along a border, in a cutting, pollinator, or cottage garden or in a meadow or naturalized area.

 The flower stalks rise to 7 feet bearing intense yellow-rayed flowers. Each flower is about 3 inches with drooping rays and a 2 to 6 inch dark brown central cone. After the blooms go to seed, it will attract songbirds including goldfinches.

Insects, Diseases, and Other Plant Problems: Fairly trouble-free plant.  Snails and slugs can injure young plants.  Powdery mildew can be a problem but healthy plants usually recover.

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Cultivars / Varieties:
Tags:
#butterflies#yellow#birds#songbirds#drought tolerant#silvery#silver foliage#wildlife plant#wildflowers#yellow flowers#nectar plant#cut flowers#large leaves#low maintenance#cottage garden#mass planting#meadow#dried flowers#food source#cpp#deer resistant#rhizomes#ornamental interest#prairie#blue-green leaves#naturalizes#groups#self-seeding
 
Cultivars / Varieties:
Tags:
#butterflies#yellow#birds#songbirds#drought tolerant#silvery#silver foliage#wildlife plant#wildflowers#yellow flowers#nectar plant#cut flowers#large leaves#low maintenance#cottage garden#mass planting#meadow#dried flowers#food source#cpp#deer resistant#rhizomes#ornamental interest#prairie#blue-green leaves#naturalizes#groups#self-seeding
  • Attributes:
    Genus:
    Rudbeckia
    Species:
    maxima
    Family:
    Asteraceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Root Cutting
    Seed
    Country Or Region Of Origin:
    Central and southern United States
    Wildlife Value:
    Flowers attract butterflies. After blooms go to seed, leave the flowers stalks and goldfinches and other small birds will feed on the seeds.
    Particularly Resistant To (Insects/Diseases/Other Problems):
    Moderately deer resistant.
    Dimensions:
    Height: 5 ft. 0 in. - 7 ft. 0 in.
    Width: 3 ft. 0 in. - 4 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Wildflower
    Leaf Characteristics:
    Semi-evergreen
    Habit/Form:
    Clumping
    Erect
    Growth Rate:
    Medium
    Maintenance:
    Low
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    High Organic Matter
    Loam (Silt)
    Sand
    Soil Drainage:
    Good Drainage
    Available Space To Plant:
    3 feet-6 feet
    Usda Plant Hardiness Zone:
    4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
  • Fruit:
    Fruit Color:
    Brown/Copper
    Display/Harvest Time:
    Fall
    Winter
    Fruit Description:
    The chocolate brown seed heads persist into early winter.
  • Flowers:
    Flower Color:
    Brown/Copper
    Gold/Yellow
    Flower Inflorescence:
    Head
    Flower Value To Gardener:
    Good Cut
    Good Dried
    Flower Bloom Time:
    Summer
    Flower Shape:
    Radial
    Flower Petals:
    7 - 20 petals/rays
    Flower Size:
    1-3 inches
    Flower Description:
    In the summer flower stalks shoot up that are sparsely leaved, and have 2-3 daisy like blooms. They are 3" across, with yellow rays that droop slightly toward the ground around a prominant dark-brown center cone that can reach 2"-6" tall.
  • Leaves:
    Leaf Characteristics:
    Semi-evergreen
    Leaf Color:
    Blue
    Gray/Silver
    Green
    Leaf Feel:
    Smooth
    Waxy
    Leaf Type:
    Simple
    Leaf Arrangement:
    Rosulate
    Whorled
    Leaf Shape:
    Ovate
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    > 6 inches
    Leaf Width:
    > 6 inches
    Leaf Description:
    Clump of silvery blue-green foliage that resembles a cabbage or collard green leaf. Smooth glaucous covering and large basal paddle-shaped leaves with slender long petioles can reach 2' long and 10" wide.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Meadow
    Naturalized Area
    Landscape Theme:
    Butterfly Garden
    Cottage Garden
    Cutting Garden
    Pollinator Garden
    Design Feature:
    Accent
    Mass Planting
    Small groups
    Attracts:
    Bees
    Butterflies
    Songbirds
    Resistance To Challenges:
    Deer
    Drought
    Heat