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ASTILBE 'Red Sentinel'

Image of Astilbe 'Red Sentinel' (Japonica Group)

James H. Schutte

Family

Saxifragaceae

Botanical Name

ASTILBE 'Red Sentinel'( Japonica Group)

Plant Common Name

Hybrid Japanese Astilbe, Japanese False Spirea, Red Sentinel False Spirea

General Description

Red Sentinel astilbe is a clump-forming, herbaceous perennial with summertime plume flowers. It is a tall hybrid cultivar with green leaves and a compact inflorescence of deep crimson red flowers which bloom in midsummer.

'Red Sentinel' requires full sun to partial shade and must be grown in moist, well-drained soils and perform best in shady locations. The flowerheads fade to attractive shades of brown in the fall, providing landscape interest through winter. They function best in shade gardens, borders, rock gardens, and are used for waterside plantings and should be divided every 3-4 years when overcrowding occurs.

Characteristics

  • AHS Heat Zone

    8 - 1

  • USDA Hardiness Zone

    3 - 8

  • Sunset Zone

    A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17

  • Plant Type

    Perennial

  • Sun Exposure

    Partial Sun, Partial Shade

  • Height

    30"-36" / 76.2cm - 91.4cm

  • Width

    18"-22" / 45.7cm - 55.9cm

  • Bloom Time

    Early Summer

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam

  • Tolerances

    Wet Site

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Spring, Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Red, Crimson

  • Fruit Color

    Brown

  • Foliage Color (Spring)

    Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green

  • Fragrant Flowers

    No

  • 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

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Cutflower, Edging, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No