Water
Water regularly once established, especially during dry periods. Ensure the soil dries out slightly between waterings. Overwatering can lead to root rot. Reduce watering in winter when the plant is dormant.
Also known as Buttercup · Common Sundrops · Four O’clocks
Narrowleaf Evening Primrose (Oenothera fruticosa) is a perennial with bright yellow, cup-shaped flowers that bloom throughout summer.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
100% intensity
Prefers at least 6 hours of direct sunlight daily for optimal flowering.
Moderate
50% intensity
Allow soil to dry slightly between waterings. Good drainage is crucial.
Well-drained, sandy loam, clay loam
50% intensity
Moderate
50% intensity
Prefers average room temperatures; hardy in USDA zones 4-9.
Low
25% intensity
Fertilize sparingly in spring with a balanced fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly once established, especially during dry periods. Ensure the soil dries out slightly between waterings. Overwatering can lead to root rot. Reduce watering in winter when the plant is dormant.
Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. Cut back plants in late autumn or early spring to remove dead or damaged stems and promote vigorous new growth.
Light pruning can also shape the plant.
Propagate from seed sown in autumn or early spring. Division of established clumps in spring is also an effective method. Softwood cuttings can be taken in late spring or early summer.
Established plants in the ground generally do not require repotting. If grown in containers, repot every 2-3 years in spring, using a well-draining potting mix. Choose a pot slightly larger than the current one.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Narrowleaf Evening Primrose (Oenothera fruticosa)
Where Narrowleaf Evening Primrose (Oenothera fruticosa) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Myrtales |
| Family | Onagraceae |
| Genus | Oenothera |
| Species | Oenothera fruticosa |
Similar in genus Oenothera
Answers based on plant encyclopedia data
