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    • Photo of Oenothera macrocarpa ssp. incana Silver Blade® flower by Plant Select®

    Photo by Plant Select®

    Used with permission, all rights reserved

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    Oenothera macrocarpa ssp. incana Silver Blade®

    Scientific Name: Oenothera macrocarpa ssp. incana

    Also Known As

    • Oenothera macrocarpa incana 'Silver Spear'
    • Oenothera macrocarpa ssp. incana 'Silver Blade'
    • Silver Blade® Evening Primrose
    • Silver Spear Missouri Evening Primrose

    Plant type

    perennial

    size

    • H: 6"-12"
    • W: 15"-18"

    planting zones

    • 4a-10b

    More Options

    Oenothera macrocarpa ssp. incana Silver Blade® plant details

    Oenothera macrocarpa ssp. incana Silver Blade® is a broadleaf deciduous perennial with blue foliage. In fall, spring and summer yellow flowers emerge. Grows well with sun and regular - low water. Drought tolerant once established. Adapts to various soil conditions. Does well in average, gritty, lean and well-drained soil. A good option if you're seeking something heat tolerant and verticillium wilt resistant.

    CHARACTERISTICS OF Oenothera macrocarpa ssp. incana Silver Blade®

    Plant type: perennial
    Plant family: onagraceae
    Foliage: deciduous blue
    Mature size: 15 IN - 18 IN - wide, 6 IN - 12 IN - tall
    Flowers: yellow blooms in fall, spring and summer
    Uses: container plant

    GROWING CONDITIONS for Oenothera macrocarpa ssp. incana Silver Blade®

    USDA Zones: 4a - 10b
    Sun exposure: sun
    Watering frequency: regular - low
    Resistant to: deer, heat and verticillium wilt
    Soil needs: average, gritty, lean and well-drained

    Nursery contributed plant descriptions

    Oenothera macrocarpa ssp. incana 'Silver Blade' is a stunning evening primrose with huge, lemon yellow flowers four inches across on red stems from spring until fall, either constantly or in waves. Deadhead to encourage more flowers. Foliage is lance-shaped, rippled, silver-blue to blue-green contrasting beautifully with the flowers. It will form a lush yet drought tolerant groundcovering mat perfect for lean, gritty soils in rock gardens, gravel gardens, along driveways, on banks, trailing over walls or in other xeriscapes or in containers. Easy to grow. Shear down in fall or early spring.

    By: Phoenix Perennials and Specialty Plants Ltd.

    Huge yellow flowers (May to frost!) complemented by SILVER-blue foliage make this wildflower of the southern Prairies a lovely addition to any drought-tolerant/xeriscape garden. S/M-D/GDr

    By: Forestfarm

    Low growing rosettes of intensely silver broad leaves. The foliage display would be reason enough to grow it, but the flowers are also extremely large and a beautiful shade of pale yellow. Zone 4.

    By: Arrowhead Alpines

    Lance shaped leaves of ghostly silver on 1' tall and spreading plants are well suited for the 3" wide lemon drop yellow summer flowers. An excellent plant.

    By: Dancing Oaks Nursery

    A southern Great Plains endemic introduced by James Locklear, further promoted by Bluebird Nursery, Clarkson, Nebraska. Silver leaves compliment the clear yellow flowers. Best on well drained sites. Blooms May to frost. Drought tolerant. Perennial. Xeriscape. Easy in average garden soil. USDA zones 4a-9 (up to 8,000').

    By: Plant Select®

    Exceptionally long blooming, & HEAT & DROUGHT TOLERANT! This new selection of “Missouri Evening Primrose” made by James Lockyear bears huge 4”-across delightful, bright yellow, silky blooms from May-September - especially with dead-heading. Clump forming to 6-10” tall & 18” across, this reliable newbie boasts stand-out soft silvery-blue wavy foliage. TOUGH AS NAILS, this bloomiferous ground-covering perennial makes a superb long-lived choice for the front of a dry garden as it will spill attractively over the edge of a bed. Tolerating poor soil, it’s also a good choice for low-care situations as well ascontainers, too. For tip-top appearance, remove spent blooms, cut back in Winter & add a dollop of compost in the Spring. EASY!

    By: Annie's Annuals & Perennials

    Gardening facts about Oenothera macrocarpa ssp. incana Silver Blade® plant

    How to Grow Oenothera macrocarpa ssp. incana Silver Blade®

    • Sun Exposure

      • sun

    • Water Needs

      • regular - drought tolerant

    • Soil Needs

      • adaptable
      • average
      • lean
      • well-drained
      • gritty

    • Special Situation

      • heat tolerant
      • verticillium wilt resistant

    Features

    • Foliage Color

      • blue

    • Flower Color

      • yellow

    • Wildlife

      • deer resistant

    • Flower Season

      • spring
      • summer
      • fall

    • Foliage Season

      • deciduous

    See other plant types of Oenothera for your garden

    Oenothera missouriensis

    aka Missouri Primrose, Ozark Sundrop

    Plant Type

    Perennial

    Zones

    5a-9b

    Size

    Height: 10"

    Width: 30"

    • sun
    • regular - drought tolerant
    Photo of Oenothera missouriensis flower, foliage by plant lust
    View Plant

    More Options

    Oenothera cespitosa

    aka Oenothera caespitosa, Fragrant Evening Primrose, White Evening Primrose

    Plant Type

    Perennial

    Zones

    4a-9b

    Size

    Height: 4"-10"

    Width: 24"

    • sun
    • regular - drought tolerant
    Photo of Oenothera cespitosa flower by Panayoti Kelaidis
    View Plant

    More Options

    Oenothera cespitosa ssp. marginata

    aka Oenothera caespitosa var. marginata, Tufted Evening Primrose

    Plant Type

    Perennial

    Zones

    5a-9b

    Size

    Height: 12"

    Width: 12"

    • sun
    • regular - drought tolerant
    Photo of Oenothera cespitosa ssp. marginata flower, foliage, form by Stan Shebs
    View Plant

    Oenothera elata

    aka Hooker's Evening Primrose

    Plant Type

    Perennial

    Zones

    4a-10b

    Size

    Height: 3'-6'

    Width: 2'-3'

    • sun
    • regular - drought tolerant
    Photo of Oenothera elata close-up, flower, form by Stan Shebs
    View Plant

    Oenothera speciosa

    aka Hartmannia speciosa, Oenothera speciosa var. berlandieri, Xylopleurum speciosum, Mexican Evening Primrose, Pink Evening Primrose, Pink Ladies, Showy Evening Primrose

    Plant Type

    Perennial

    Zones

    5a-10b

    Size

    Height: 18"-24"

    Width: 9"-12"

    • sun
    • regular
    Photo of Oenothera speciosa flower, form by Panayoti Kelaidis
    View Plant

    More Options

    +45 more Oenothera
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