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POLEMONIUM 'Blue Pearl'

Image of Polemonium 'Blue Pearl'

Jesse Saylor

Family

Polemoniaceae

Botanical Name

POLEMONIUM 'Blue Pearl'

Plant Common Name

Hybrid Jacob's Ladder

Special Notice

This entry has yet to be reviewed and approved by L2G editors.

General Description

The powdery-blue flowers and fine-textured, ferny leaves of ‘Blue Pearl’ Jacob's ladder bring delight to a late spring garden. This clump-forming perennial is a complex hybrid derived from plants native to the mountainous regions of the Northern Hemisphere where the soils are cool and moist.

The fern-like leaves of this selection are sword-shaped and divided into dozens of tiny leaflets that are held out perpendicularly to the central stem, resembling the rungs of a ladder. In late spring or early summer, wispy, branched stems rise upward and display loose clusters of five-petalled light-blue flowers. In the center of each fragrant bloom are bright yellow stamens with pollen.

Grow 'Blue Pearl' in partial sun to partial shade in cool, moist, fertile soil, include moist clays. Intolerant of high summer heat and humidity, this plant thrives in higher elevation gardens. It may re-bloom by early autumn if spent flowers re removed regularly in spring. It is a nice choice for borders, woodland gardens, shaded rock gardens and simply as specimens that draw the nose and eye with fragrant flowers and lovely foliage.

Characteristics

  • AHS Heat Zone

    7 - 4

  • USDA Hardiness Zone

    3 - 8

  • Sunset Zone

    A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17

  • Plant Type

    Perennial

  • Sun Exposure

    Partial Sun, Partial Shade

  • Height

    8"-10" / 20.3cm - 25.4cm

  • Width

    10"-12" / 25.4cm - 30.5cm

  • Bloom Time

    Late Spring, Early Summer

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam

  • Tolerances

    Wet Site

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Spring, Summer

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Light Blue

  • Foliage Color (Spring)

    Green, Light Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Fine

  • Foliage Sheen

    Matte

  • Evergreen

    Semi-Evergreen

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Container, Groundcover, Mixed Border, Rock Garden / Wall

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    Yes