Advanced Search Filters

Plant Type
Hardiness Zone
Heat Zone
Sunset Zone
Function
Sun Exposure
Soil Moisture
Water Requirement

RUDBECKIA hirta 'Denver Daisy'

Image of Rudbeckia hirta 'Denver Daisy'

Ernst Benary® Inc.

Family

Asteraceae

Botanical Name

RUDBECKIA hirta 'Denver Daisy'

Plant Common Name

Common Black-eyed Susan, Denver Daisy Black-eyed Susan

General Description

Named to commemorate the city of Denver, Colorado’s 150th anniversary in 2008, ‘Denver Daisy’ has large, golden daisies with chocolate brown centers and marks at the base of each petal. That year the city distributed 300,000 packets of seed for this Ernst Benary cultivar with mixed results. Regardless, this lovely garden flower performs well, is exceptionally heat tolerant and blooms for a long time in summer.

Common black-eyed Susan, also called gloriosa daisy, is a short-lived perennial that is native to much of North America. It is a warm season bloomer that forms a clump of foliage from which rises thick, leafy stems topped with large daisies with prominent, raised dark-brown or black centers. These make superb cut flowers and attract many pollinators, such as bees and butterflies. Deadhead it regularly to encourage continued bloom.

Grow Rudbeckia hirta in full sun and well-drained soil with average fertility. It is prone to root rot and powdery mildew, so space it well to encourage good air flow. Allow its soil to dry between watering. This popular ornamental is at home in cutting gardens and mixed borders. Like many black-eyed Susans, it will self-sow.

Characteristics

  • AHS Heat Zone

    7 - 1

  • USDA Hardiness Zone

    3 - 7

  • Sunset Zone

    1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    1'-2' / 0.3m - 0.6m

  • Width

    10"-12" / 25.4cm - 30.5cm

  • Bloom Time

    Early Summer, Summer, Late Summer, Early Fall

  • Native To

    North America, Alaska

Growing Conditions

  • Soil pH

    Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Pollution

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Yellow, Orange, Gold, Bronze, Chocolate

  • Flower Color Modifier

    Bicolor

  • Fruit Color

    Brown, Chocolate

  • Foliage Color (Spring)

    Green, Dark Green

  • Foliage Color (Summer)

    Green, Dark Green

  • Foliage Color (Fall)

    Green, Dark Green

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Coarse

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Container, Cutflower, Mixed Border, Wildflower

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Birds, Butterflies

  • Self-Sowing

    Yes