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    • Photo of Penstemon cyaneus flower by Matt Lavin

    Photo by Matt Lavin

    This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.

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    Penstemon cyaneus

    Also Known As

    • Dark Blue Penstemon

    Plant type

    perennial

    size

    • H: 12"-18"
    • W: 24"

    planting zones

    • 4a-9b

    More Options

    Penstemon cyaneus plant details

    Penstemon cyaneus is a broadleaf deciduous or semi-evergreen perennial with green foliage. In fall and summer blue flowers emerge. Attracts bees, butterflies and hummingbirds making it an excellent addition to pollinator gardens. Grows well with sun and regular - low water. Does well in average, gritty, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

    CHARACTERISTICS OF Penstemon cyaneus

    Plant type: perennial
    Plant family: plantaginaceae
    Foliage: deciduous or semi-evergreen green
    Mature size: 24 IN wide, 12 IN - 18 IN - tall
    Flowers: blue blooms in fall and summer

    GROWING CONDITIONS for Penstemon cyaneus

    USDA Zones: 4a - 9b
    Sun exposure: sun
    Watering frequency: regular - low
    Resistant to: verticillium wilt
    Soil needs: average, gritty, rich and well-drained

    Gardening facts about Penstemon cyaneus plant

    How to Grow Penstemon cyaneus

    • Sun Exposure

      • sun

    • Water Needs

      • regular - low

    • Soil Needs

      • average
      • well-drained
      • rich
      • gritty

    • Special Situation

      • verticillium wilt resistant

    Features

    • Foliage Color

      • green

    • Flower Color

      • blue

    • Wildlife

      • bees
      • butterflies
      • hummingbirds

    • Flower Season

      • fall
      • summer

    • Foliage Season

      • deciduous
      • semi-evergreen

    Landscape groups by tags

    See other plant types of Penstemon for your garden

    Penstemon ambiguus var. laevissimus

    aka Penstemon ambiguus subsp. laevissimus, Pink Plains Beardtongue

    Plant Type

    Perennial

    Zones

    7a-9b

    Size

    Height: 9"-12"

    Width: 12"-18"

    • sun
    • occasional
    Photo of Penstemon ambiguus var. laevissimus close-up, flower by Stan Shebs
    View Plant

    Penstemon bicolor

    aka Pinto Beardtongue

    Plant Type

    Perennial

    Zones

    8a-10b

    Size

    Height: 2'-4'

    Width: 2'-3'

    • sun
    • occasional - drought tolerant
    Photo of Penstemon bicolor close-up, flower by Stan Shebs
    View Plant

    Penstemon bicolor subsp. roseus

    aka Pinto Beardtongue

    Plant Type

    Perennial

    Zones

    8a-10b

    Size

    Height: 2'-4'

    Width: 2'-3'

    • sun - mostly sun
    • regular - drought tolerant
    Photo of Penstemon bicolor subsp. roseus close-up, flower by Stan Shebs
    View Plant

    Penstemon eatonii

    aka Firecracker Penstemon

    Plant Type

    Perennial

    Zones

    6a-10b

    Size

    Height: 2'

    Width: 8"-14"

    • sun
    • low - drought tolerant
    Photo of Penstemon eatonii flower, form by Stan Shebs
    View Plant

    More Options

    Penstemon gracilis

    aka Lilac Beardstongue, Lilac Penstemon

    Plant Type

    Perennial

    Zones

    3a-9b

    Size

    Height: 8"-24"

    Width: 8"-24"

    • sun
    • regular
    Photo of Penstemon gracilis close-up, flower by Stan Shebs
    View Plant
    +227 more Penstemon
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