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Oenothera fremontii Shimmer

Shimmer Evening Primrose

Shimmer' is all about foliage, flowers, and texture. Blooming with 3-inch bright lemon-yellow flowers in late spring, the plant re-blooms during the summer months. The narrow leaves are pewter-gray and very attractive. Drought resistant/drought tolerant plant (xeric). A High Country Gardens introduction; Discovered in the garden of Lauren Springer Ogden. 2007 Plant of the Year.
Zones4 - 8
Advantages
Native
Light Requirements
Full Sun
Annual Rainfall
10 to 20"
20 to 30"
30 to 40" (with care)
Mature Height6-8" tall
Mature Spread15" wide
Bloom TimeLate spring to late summer
ShippingNo longer available this season. Learn More…
SizeNo
SKUHC016178

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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HC016178
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Details
Shimmer' is about foliage, flowers, texture and an exciting new look in the world of native plants. Originally discovered by Lauren Springer Ogden and Scott Ogden, this new evening primrose cultivar is an attention-getting plant in and out of bloom. A burst of 3" diameter, lemon-yellow flowers light up the plant in late spring, followed by flashes of flowers throughout the summer. The extremely narrow gray-green, almost silver leaves have such incredible texture that it is invaluable when contrasting with other colors and types of foliage. I recommend pinching the stem tips several times in spring to create more branching and "thicken up" the plant with more foliage. Good for Firescaping. Try companion plants such as Lavender 'Mitcham Grey,' Gaillardia and Salvia 'Wild Thing.' (cutting propagated). 2007 Plant of the Year.
More Information
Associated SKUsHC016178
Common Name
Shimmer Evening Primrose
Botanical Name
Oenothera fremontii Shimmer
Zones
4, 5, 6, 7, 8
Light Requirements
Full Sun
Flower Color
Yellow
Mature Height
6-8" tall
Mature Spread
15" wide
Bloom Time
Late spring to late summer
Ships As
Potted Plant
Soil Type
Sandy Soil, Clay Soil, Average Soil
Soil Moisture
Drought Resistant / Waterwise
Amount Of Rain
10 to 20", 20 to 30", 30 to 40" (with care)
Advantages
Native
Awards
Perennial Plant of the Year
Special Groups
High Country Gardens Introduction
Ideal Region
West, Southwest
Planting Time
Spring / Summer, Fall
Neonicotinoid Free
Yes - Learn More
Native To
North America
Item Unit Of Measure
Plant
Ships To Canada
No
Planting Guides
Oenothera (Evening Primrose) - a huge genus of biennials and perennials native to the Western hemisphere. Flowers are in shades of yellow, pink and white. Pollinated primarily by hawk moths. Flowers open in the afternoon and close by late morning the next day.

Preferred growing conditions
  • Plant in low fertility ("lean") soil including dry clay, positioned in full sun. Mulch with gravel or not at all.
  • Water regularly the first growing season to establish the plant. Thereafter, infrequent but deep watering is all this plant needs.
  • Deadheading is not needed as these are naturally long blooming species. Fertilize lightly in the fall with Yum Yum Mix.

    • Special comments
  • Oenothera are tap rooted plants and does not like to be transplanted once established. Don't divide as they resent having their roots disturbed.
  • Leave standing over the winter and cut back hard, leaving 2 to 3 inches of stems above ground.
  • O. speciosa 'Rosea' is a showy everblooming species that can spread aggressively and should not be planted into areas where it's enthusiastic nature can be a problem. Deadheaded to reduce reseeding. Dig out suckering roots when spreading too wide.
  • Watch for flea beetles (small metallic green beetles) which can defoliate the plants in late spring/early summer.
    • View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
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No longer available this season.

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