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ASTILBE 'Sister Theresa'

Image of Astilbe 'Sister Theresa' ('Zuster Theresa')

Family

Saxifragaceae

Botanical Name

ASTILBE 'Sister Theresa' ('Zuster Theresa')

Plant Common Name

Astilbe, Sister Theresa Astilbe

General Description

One of many hybrids resulting from crosses among Astilbe thunbergii, Astilbe chinensis, and other Asian astilbes, 'Sister Theresa' is a clump-forming perennial grown for its frothy pink pyramidal flower clusters. The early summer flowers rise on slender stems from ferny mid green foliage.

Grow this astilbe in fertile, moist, slightly acid, humus-rich soil in partial sun to full shade. It will take full sun, but only in cool climates and with constant moisture. Plant it either singly as an accent plant or in drifts for clouds of color in the shade. It is effective grown in mixed borders and rock gardens or near water gardens. Astilbes attract butterflies, and their flowers are excellent for cutting and drying.

Characteristics

  • AHS Heat Zone

    8 - 2

  • USDA Hardiness Zone

    4 - 8

  • Sunset Zone

    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, Partial Sun

  • Height

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Early Summer

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Wet Site

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Spring, Summer

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Light Pink

  • Fruit Color

    Tan

  • Foliage Color (Spring)

    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

    Glossy

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Container, Cutflower, Dried Flower/Everlasting, Edging, Foundation, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    No