Photo of Clarkia williamsonii close-up, flower by tomhilton

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Clarkia williamsonii

Also Known As

  • Fort William Fairyfan

Plant type

annual / biennial

size

  • H: 12"
  • W: 12"

planting zones

  • 1-11

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Clarkia williamsonii plant details

Clarkia williamsonii is a broadleaf deciduous annual / biennial with green foliage. In spring and summer lavender flowers emerge. Grows well with sun and regular - low water. Adapts to various soil conditions. Does well in average and well-drained soil.

CHARACTERISTICS OF Clarkia williamsonii

Plant type: annual / biennial
Plant family: onagraceae
Foliage: deciduous green
Mature size: 12 IN wide, 12 IN tall
Flowers: lavender blooms in spring and summer
Uses: border plant, container plant, cottage garden, cutting garden, self-sowing

GROWING CONDITIONS for Clarkia williamsonii

USDA Zones: 1 - 11
Sun exposure: sun
Watering frequency: regular - low
Soil needs: average and well-drained

Nursery contributed plant descriptions

Bold markings color the blooms of this showy native annual in late Spring & early Summer. Some people have described this species as gaudy, but we like a little flash to our flowers, & this species still has its natural grace. The center of the flower is white, & the outer part of the petal is lavender with a deep magenta blotch in the center. The flowers seem to glow from within, & appear well into summer if supplemented with additional water on plants that span at least a foot across, & are under a foot tall. Drainage is key! Clarkia williamsonii does not tolerate clay very well, but would be a great plant to try to naturalize on a rocky incline, & has done beautifully for us at the edge of rock walls in our nursery garden beds. Containers work well, too, of course. Poor soil is fine, & this year’s plants will yield seedlings that will need no additional water to thrive next year! Local all the way from Kern County north to Nevada County.

Gardening facts about Clarkia williamsonii plant

How to Grow Clarkia williamsonii

  • Sun Exposure

    • sun
  • Water Needs

    • regular - low
  • Soil Needs

    • adaptable
    • average
    • well-drained

Features

  • Foliage Color

    • green
  • Flower Color

    • lavender
  • Flower Season

    • spring
    • summer
  • Foliage Season

    • deciduous
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