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    • Photo of Hypericum olympicum f. uniflorum by Arrowhead Alpines

    Photo by Arrowhead Alpines

    Used with permission, all rights reserved

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    Hypericum olympicum f. uniflorum

    Also Known As

    • Hypericum olympicum ssp. uniflorum grandiflorum
    • St. John's wort

    Plant type

    shrub

    size

    • H: 6"-12"
    • W: 12"-24"

    planting zones

    • 5a-9a

    More Options

    Hypericum olympicum f. uniflorum plant details

    Hypericum olympicum f. uniflorum is a broadleaf deciduous shrub with green foliage. In summer yellow flowers emerge. Attracts bees making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and regular - low water. Drought tolerant once established. Prefers to be dry in summer. Does well in average and well-drained soil.

    CHARACTERISTICS OF Hypericum olympicum f. uniflorum

    Plant type: shrub
    Plant family: hypericaceae
    Foliage: deciduous green
    Mature size: 12 IN - 24 IN - wide, 6 IN - 12 IN - tall
    Flowers: yellow blooms in summer

    GROWING CONDITIONS for Hypericum olympicum f. uniflorum

    USDA Zones: 5a - 9a
    Sun exposure: sun - mostly sun
    Watering frequency: regular - low
    Soil needs: average and well-drained

    Nursery contributed plant descriptions

    I quite like this one. Decidedly large yellow flowers with a showy poof of stamens at the center are produced in very large numbers. One of the best floral displays in the genus. Plant itself is a small subshrub, reaching maybe 8 inches or so tall. Zone 5

    By: Arrowhead Alpines

    Gardening facts about Hypericum olympicum f. uniflorum plant

    How to Grow Hypericum olympicum f. uniflorum

    • Sun Exposure

      • sun - mostly sun

    • Water Needs

      • regular - drought tolerant

    • Water Needs

      • dry in summer

    • Soil Needs

      • average
      • well-drained

    Features

    • Foliage Color

      • green

    • Flower Color

      • yellow

    • Wildlife

      • bees

    • Flower Season

      • summer

    • Foliage Season

      • deciduous

    See other plant types of Hypericum for your garden

    Hypericum fortuneana 'Purple Fountain'

    aka St. John's Wort

    Plant Type

    Shrub

    Zones

    6a-9b

    Size

    Height: 2'-6'

    Width: 3'-6'

    • sun - mostly shade
    • regular
    Photo of Hypericum fortuneana 'Purple Fountain' flower by Forestfarm
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    Hypericum x hidcoteense 'Hidcote'

    aka Hypericum 'Hidcote', Hidcote St. John's Wort

    Plant Type

    Shrub

    Zones

    5a-9b

    Size

    Height: 2'-6'

    Width: 2'-6'

    • sun - mostly shade
    • regular - drought tolerant
    Photo of Hypericum x hidcoteense 'Hidcote' flower, foliage by Wouter Hagens
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    Hypericum uralum

    aka St. John's Wort

    Plant Type

    Shrub

    Zones

    5a-9b

    Size

    Height: 2'-4'

    Width: 2'-5'

    • sun - mostly shade
    • regular
    Photo of Hypericum uralum foliage by Stan Shebs
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    Hypericum frondosum 'Sunburst'

    aka Golden St John's Wort, Sunburst St. John's Wort, Sunburst St. Johnswort

    Plant Type

    Shrub, Groundcover

    Zones

    6a-9b

    Size

    Height: 2'-4'

    Width: 3'-4'

    • sun - mostly shade
    • even moisture - drought tolerant
    Photo of Hypericum frondosum 'Sunburst' flower by Far Reaches Farm
    View Plant

    More Options

    Hypericum galioides 'Brodie'

    aka Brodie St. Johnswort

    Plant Type

    Shrub

    Zones

    7a-9b

    Size

    Height: 3'

    Width: 3'

    • sun - mostly sun
    • regular - occasional
    Photo of Hypericum galioides 'Brodie' flower by Dancing Oaks Nursery
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    +44 more Hypericum
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