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DELPHINIUM (ROUND TABLE SERIES)

Image of Delphinium (ROUND TABLE SERIES)

Debbie Schilling

Family

Ranunculaceae

Botanical Name

DELPHINIUM( ROUND TABLE SERIES)

Plant Common Name

Round Table Delphinium

General Description

Delphiniums in the Round Table Series comprise a mixture of colors from the popular Pacific Giant Strain. These impressively tall-growing hybrids produce long spires of semi-double flowers in an array of colors including white, lavender, blue and purple, each with a cultivar name relevant to Camelot. The showy blooms arise from clumps of deeply-lobed, medium-green foliage in early to midsummer, and are visited by bees, butterflies and hummingbirds.

Although perennial, Pacific Giant hybrid delphiniums are typically treated as annuals or biennials. They excel in full sun and fertile, well-drained, slightly alkaline soil. Their tall, dense flower spikes should be staked when about knee-high to prevent toppling from wind and rain. Once the flowers have finished blooming, cut them back to just above where smaller flowering shoots are forming to prolong flowering. The plants may also bloom a second time by early autumn. Watch closely for snails and slugs, as these can ravage new spring growth.

Round Table Series delphiniums add drama to mixed beds and borders with their beautiful colors and majestic, imposing height. Their gorgeous, dense bloom spikes also make outstanding cut flowers.

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, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun

  • Height

    5'-7' / 1.5m - 2.1m

  • 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

    Narrow Upright/Fastigiate

  • Seasonal Interest

    Spring, Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Purple, Light Blue, Dark Blue, Lavender, Violet

  • 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

    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

    Cutflower, Feature Plant, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Hummingbirds, Butterflies

  • Self-Sowing

    No