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Calylophus lavandulifolius (Lavendar-leaf Sundrops)

Lavendar-leaf Sundrops, Lavender-leaf Primrose, Lavenderleaf Sundrops, Calylophus hartwegii ssp. lavandulifolius, Calylophus hartwegii var. lavandulifolius, Galpinsia lavandulifolia, Oenothera lavandulifolia, Oenothera lavandulifolia var. glandulosa, Oenothera lavandulifolia var. typica

Calylophus lavandulifolius, Lavendar-leaf Sundrops, Lavender-leaf Primrose, Lavenderleaf Sundrops, Oenothera lavandulifolia, Yellow Flowers, Perennial Flowers
Calylophus lavandulifolius, Lavendar-leaf Sundrops, Lavender-leaf Primrose, Lavenderleaf Sundrops, Oenothera lavandulifolia, Yellow Flowers, Perennial Flowers

Spectacular in bloom, Calylophus lavandulifolius (Lavendar-leaf Sundrops) is a low, mound-forming perennial boasting showy clear yellow flowers, 2 in. across (5 cm), each with four, fringed petals. Blooming in flushes every 4-5 weeks from late spring to fall, the blossoms fade to a pinkish or purplish color. They are borne atop grayish stems covered with a dense velvety pubescence. The leaves are simple, alternate, narrow and gray. Native to western North America, Calylophus lavandulifolius can be found growing on dry, open, rocky slopes. Unlike many other evening primrose species, Calylophus lavandulifolius blooms during the day, and it often forms colonies of dozens of plants. A valuable plant for hot, dry locations and when mixed with desert perennials. Provides a bold splash of color in the summer garden.

  • Grows up to 8 in. tall (20 cm) and 10 in. wide (25 cm).
  • Best in full sun or light shade in gravelly, dry, well-drained soils. Little supplemental watering is necessary if new plants are established early in the season.
  • Great choice for prairies and meadows, wildflower gardens, rocky slopes and naturalized areas.
  • No serious pest or disease issues.
  • Propagate by seed or cuttings taken in late spring.
  • Native to western North America.

Requirements

Hardiness 5 - 9
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Onagraceae
Genus Oenothera
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early, Mid, Late)
Fall
Height 6" - 8"
(15cm - 20cm)
Spread 8" - 10"
(20cm - 25cm)
Spacing 10" (25cm)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Native Plants United States, Rocky Mountains, Midwest, Southwest, Kansas, Nebraska, South Dakota, Texas, Arizona, Nevada, New Mexico, Oklahoma, Colorado, Utah, Wyoming
Tolerance Dry Soil, Rocky Soil
Garden Uses Banks And Slopes, Beds And Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow
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Oenothera (Evening Primrose)
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Alternative Plants to Consider

Camissoniopsis cheiranthifolia (Beach Primrose)
Calylophus serrulatus (Plains Evening Primrose)
Oenothera elata (Hooker’s Evening Primrose)
Oenothera pallida (Pale Evening Primrose)
Oenothera fruticosa (Sundrops)
Oenothera speciosa ‘Siskiyou’ (Evening Primrose)

Recommended Companion Plants

Yucca elata (Soaptree Yucca)
Bouteloua hirsuta (Hairy Grama)
Larrea tridentata (Creosote Bush)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 5 - 9
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Onagraceae
Genus Oenothera
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early, Mid, Late)
Fall
Height 6" - 8"
(15cm - 20cm)
Spread 8" - 10"
(20cm - 25cm)
Spacing 10" (25cm)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Native Plants United States, Rocky Mountains, Midwest, Southwest, Kansas, Nebraska, South Dakota, Texas, Arizona, Nevada, New Mexico, Oklahoma, Colorado, Utah, Wyoming
Tolerance Dry Soil, Rocky Soil
Garden Uses Banks And Slopes, Beds And Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Oenothera (Evening Primrose)
Not sure which Oenothera (Evening Primrose) to pick?
Compare Now

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