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    Spiraea japonica Royal Knight™

    Scientific Name: Spiraea japonica 'Klmtwenty'

    Also Known As

    • Spiraea japonica 'Royal Knight'

    Plant type

    shrub

    size

    • H: 4'-5'
    • W: 4'-5'

    planting zones

    • 4a-8b

    More Options

    Spiraea japonica Royal Knight™ plant details

    Spiraea japonica Royal Knight™ is a broadleaf deciduous shrub with bronze and green foliage. In spring and summer pink and red flowers emerge. Attracts bees and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and even moisture - low water. Adapts to various soil conditions. Does well in well-drained soil.

    CHARACTERISTICS OF Spiraea japonica Royal Knight™

    Plant type: shrub
    Plant family: rosaceae
    Foliage: deciduous bronze and green
    Mature size: 4 FT - 5 FT - wide, 4 FT - 5 FT - tall
    Flowers: pink and red blooms in spring and summer
    Uses: fall color

    GROWING CONDITIONS for Spiraea japonica Royal Knight™

    USDA Zones: 4a - 8b
    Sun exposure: sun - mostly sun
    Watering frequency: even moisture - low
    Soil needs: well-drained

    Nursery contributed plant descriptions

    A royal Spiraea with its bronzy new growth and clouds of dark rose-red flowers in summer. Fall brings on a lovely show of more reds when the foliage changes. Mounding habit, 4-5' tall and wide.

    By: Greer Gardens Inc.

    Gardening facts about Spiraea japonica Royal Knight™ plant

    How to Grow Spiraea japonica Royal Knight™

    • Sun Exposure

      • sun - mostly sun

    • Water Needs

      • even moisture - low

    • Soil Needs

      • adaptable
      • well-drained

    Features

    • Foliage Color

      • bronze
      • green

    • Flower Color

      • pink
      • red

    • Wildlife

      • bees
      • butterflies

    • Flower Season

      • spring
      • summer

    • Foliage Season

      • deciduous

    Landscape groups by tags

    See other plant types of Spiraea for your garden

    Spiraea thunbergii 'Ogon'

    aka Spiraea Mellow Yellow®, Spirea 'Ogon', Garland Spiraea, Ogon Spiraea, Ogon Spirea, Thunberg's Meadowsweet

    Plant Type

    Shrub

    Zones

    5a-9b

    Size

    Height: 3'-5'

    Width: 4'-8'

    • sun - shade
    • even moisture
    Photo of Spiraea thunbergii 'Ogon' foliage by Avant Gardens
    View Plant

    Spiraea japonica 'Bullata'

    aka Spiraea bullata, Spiraea crispifolia, Spiraea japonica v. bullata, Spiraea japonica var. bullata, Bullata Japanese Spirea

    Plant Type

    Shrub

    Zones

    4a-8b

    Size

    Height: 20"

    Width: 18"

    • sun - mostly sun
    • regular
    Photo of Spiraea japonica 'Bullata' flower by Conifer Kingdom
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    Spiraea betulifolia

    aka Birchleaf Spiraea

    Plant Type

    Shrub

    Zones

    5a-10b

    Size

    Height: 2'-3'

    Width: 3'-6'

    • sun
    • even moisture
    Photo of Spiraea betulifolia foliage by plant lust
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    More Options

    Spiraea japonica 'Candlelight'

    aka Spiraea japonica 'Candle Light', Spiraea x bumalda 'Candle Light', Candle Light Spiraea

    Plant Type

    Shrub

    Zones

    4a-10b

    Size

    Height: 2'

    Width: 3'

    • sun
    • even moisture
    Photo of Spiraea japonica 'Candlelight' flower, foliage, form by Briggs Plant Propagators
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    Spiraea japonica 'Firelight'

    aka Spiraea bumalda 'Fire Light', Spiraea japonica 'Fire Light', Fire Light Japanese Spirea, Fire Light Spirea

    Plant Type

    Shrub

    Zones

    5a-9b

    Size

    Height: 2'-3'

    Width: 3'-4'

    • sun
    • even moisture - regular
    Photo of Spiraea japonica 'Firelight' foliage by Briggs Plant Propagators
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    More Options

    +64 more Spiraea
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