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DELPHINIUM 'Delft Blue'

Image of Delphinium 'Delft Blue' (Belladonna Group)

Dutch Bulbs

Family

Ranunculaceae

Botanical Name

DELPHINIUM 'Delft Blue'( Belladonna Group)

Plant Common Name

Belladonna Delphinium, Delft Blue Delphinium

General Description

The unique, two-toned flowers of delphinium ‘Delft Blue’call to mind the renowned Dutch pottery for which it is named. The petals of its single, spurred, pale blue blossoms are strikingly marked with soft, central bands of deep blue, and are borne on airy, branched stems from early through midsummer. They rise atop mounds of rich green, deeply divided foliage, and may be visited by bees, butterflies and hummingbirds.

Delphiniums prefer full sun and moist, fertile, well-drained, slightly alkaline soil. Thriving in areas with cool to moderate summer weather, they falter when exposed to very hot temperatures. Taller varieties may require staking to avoid toppling, and windy sites should be avoided. After the flowers fade, promptly cut back the stems to encourage possible reblooming. Monitor closely for slugs and snails in spring, as these can damage new growth.

The beautiful colors and striking vertical habit of delphiniums add drama to mixed beds and borders. Their gorgeous blooms also make outstanding cut flowers. Often short-lived, these perennials are frequently treated as annuals or biennials, particularly in areas with long, hot summers.

Characteristics

  • AHS Heat Zone

    8 - 1

  • USDA Hardiness Zone

    3 - 7

  • Sunset Zone

    A1, A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun

  • Height

    30"-40" / 76.2cm - 101.6cm

  • Width

    12"-20" / 30.5cm - 50.8cm

  • Bloom Time

    Late Spring, Early Summer, Summer, Early Fall

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Spring, Summer

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Light Blue, Dark Blue

  • Flower Color Modifier

    Bicolor, Striped

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    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

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Cutflower, Feature Plant, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Hummingbirds, Butterflies

  • Self-Sowing

    No