White-tufted Evening-Primrose
Oenothera caespitosa
White-tufted Evening-Primrose (Oenothera caespitosa) is a Colorado-native perennial suited to the Colorado Front Range. It matures to about 6 in tall and 12 in wide, needs low to medium water, and prefers full sun. CO native perennial; supports pollinators.
Colorado nativeOn the CSU listlow to medium water6 in tall and 12 in wideXeric / water-wiseZones 1–3 (can be planted near the house)Deer-resistant
Photos
- Photo 1: (c) Steve Matson, some rights reserved (CC BY)
- Photo 2: (c) James Telford, some rights reserved (CC BY)
- Photo 3: Stan Shebs, Wikimedia Commons (CC-BY-SA)
- Photo 4: (c) Steve Matson, some rights reserved (CC BY)
- Photo 5: MtBotany, Wikimedia Commons (CC-BY-SA)
- Photo 6: Krzysztof Ziarnek, Kenraiz, Wikimedia Commons (CC-BY-SA)
At a glance
Will it survive here?
- Hardiness zones
- USDA 4–8
- Water needs
- low to medium water
- Sun
- Best in full sun.
- Soil
- clay, loam, sandy
- Soil pH
- 6.5–8.0
- Hail tolerance
- high
- Wind tolerance
- high
- Salt tolerance
- moderate
- Firewise (defensible space)
- Zones 1–3 (can be planted near the house)
- Site uses
- Slopes & erosion control
How big, what shape?
- Mature size
- 6 in tall and 12 in wide
- Planting spacing
- ~8–12 in apart
What it looks like, and when
- Bloom time
- late spring, early summer, mid summer
- Bloom color
- white, pink
- Bloom length
- Long (several weeks)
- Foliage
- Deciduous
Who else benefits
- Pollinator value
- high
- Deer
- Generally deer-resistant
- Colorado native
- Yes
- Native ecoregion
- shortgrass prairie, foothills
Planting & establishment
Native perennial; deep-water first season to establish, then minimal water needed.
Frequently asked questions
- Is White-tufted Evening-Primrose good for the Colorado Front Range?
- Yes, White-tufted Evening-Primrose is a well-suited perennial for Colorado's Front Range.
- How big does White-tufted Evening-Primrose get?
- It matures to about 6 in tall and 12 in wide.
- How far apart do I plant White-tufted Evening-Primrose?
- Space White-tufted Evening-Primrose about 8 in apart for a faster, fuller bed, or up to 12 in apart for a looser planting.
- Is White-tufted Evening-Primrose hardy on the Front Range?
- White-tufted Evening-Primrose is hardy in USDA 4–8. The Colorado Front Range spans roughly USDA 4b–6a, so it is well within range.
- How much water does White-tufted Evening-Primrose need?
- It needs low to medium water once established.
- Is White-tufted Evening-Primrose native to Colorado?
- Yes. It is a Colorado native.
- Is White-tufted Evening-Primrose deer-resistant?
- White-tufted Evening-Primrose is generally considered deer-resistant, though no plant is deer-proof when browse pressure is high.
- Is White-tufted Evening-Primrose a good firewise plant near the house?
- White-tufted Evening-Primrose is a lower-fuel choice suitable in defensible-space zones 1–3, it can be planted near the house when kept well irrigated and maintained. This is general suitability guidance based on CSU Extension firewise plant lists, not a guarantee that any plant won't burn, a well-irrigated, well-maintained plant is the goal. Follow CSU Extension defensible-space guidance and check with your local fire district before planting in the wildland-urban interface.
- How long does White-tufted Evening-Primrose bloom?
- White-tufted Evening-Primrose blooms for several weeks, a long-season performer on the Front Range. Bloom timing shifts a week or two with elevation and spring weather.
