Alphabetical Plant Listing

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


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.

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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 Oenothera - Primroses - Sundrops
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)
Water Needs Low
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Native Plants United States, Midwest, Kansas, Nebraska, South Dakota, Rocky Mountains, Colorado, Utah, Wyoming, Southwest, Nevada, Arizona, New Mexico, Oklahoma, Texas
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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Great Plant Combination Ideas with Oenothera - Primroses - Sundrops


Andrey Zharkikh, Flickr

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.


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 Oenothera - Primroses - Sundrops
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)
Water Needs Low
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Native Plants United States, Midwest, Kansas, Nebraska, South Dakota, Rocky Mountains, Colorado, Utah, Wyoming, Southwest, Nevada, Arizona, New Mexico, Oklahoma, Texas
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

Great Plant Combination Ideas with Oenothera - Primroses - Sundrops

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