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DELPHINIUM (Belladonna Group)

Image of Delphinium (Belladonna Group)

Family

Ranunculaceae

Botanical Name

DELPHINIUM( Belladonna Group)

Plant Common Name

Belladonna Delphinium

General Description

Delphiniums in the Belladonna Group are highly regarded for their tall, airy, branched spikes of flowers which bloom in numerous shades of blue and white. These hybrids were developed through extensive breeding of various species native to Asia and North America. Their spurred, five-petaled blossoms are borne on slender, branched stems from early to late summer. Somewhat resembling “elf caps”, the showy blooms are also attractive to bees and butterflies. They rise from basal clumps of lush green, deeply lobed foliage which has an almost feathery appearance.

Grow delphiniums in full sun and fertile, well-drained soil which receives regular moisture. Slightly alkaline soils are ideal. The tall flowering stems may require staking to prevent toppling, and windy sites should be avoided. After the flowers fade, promptly cut back the stems to any lower flowering side shoots to encourage extended blooming. The plants may produce a second full show of flowers by mid-autumn. Monitor closely for slugs and snails in spring, as these can damage new growth.

Tall delphiniums bring dramatic vertical appeal and gorgeous color to the perennial border or cottage garden. Their striking blooms are also highly prized as 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 - 3

  • USDA Hardiness Zone

    3 - 7

  • Sunset Zone

    A1, A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun

  • Height

    3'-4' / 0.9m - 1.2m

  • Width

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Late Spring, Early Summer, Summer, 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, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Blue, Light Blue, Dark Blue

  • 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, Semi-Double

  • 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

    Bedding Plant, Cutflower, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Hummingbirds, Butterflies

  • Self-Sowing

    No