Water
Water consistently, keeping the soil moist but not saturated. Reduce watering in winter when growth slows.
Intermediate Evening-Primrose (Oenothera × fallax) is a hybrid perennial with bright yellow flowers that open in the evening. It thrives in sunny, well-drained locations, popular for borders and naturalized areas.
At-a-glance light, water, soil, and growing conditions from plant data
Prefers full sun but tolerates partial shade.
100% intensity
Afternoon shade is beneficial in hot climates.
Water regularly, allowing soil to dry slightly between waterings.
100% intensity
Ensure good drainage to prevent root rot.
Well-drained soil is essential. Tolerates a range of soil types, including sandy or loamy, but avoid waterlogged conditions.
50% intensity
Thrives in moderate temperatures.
100% intensity
Ideal range is 15-25 °C.
Outdoor
50% intensity
Feed sparingly in spring with a balanced fertilizer.
100% intensity
Avoid over-fertilizing.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Non-toxic to pets and humans.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water consistently, keeping the soil moist but not saturated. Reduce watering in winter when growth slows.
Deadhead spent flowers to encourage more blooms and prevent self-seeding. Cut back plants in late autumn or early spring to maintain shape and vigor.
Easily propagated from seed sown in spring or autumn, or by division of established clumps in early spring.
If grown in pots, repot every 1-2 years in spring into fresh potting mix to refresh nutrients and prevent root-bound conditions.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Intermediate Evening-Primrose (Oenothera × fallax)
Where Intermediate Evening-Primrose (Oenothera × fallax) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Species | Oenothera × fallax |
Similar in genus Oenothera
Answers based on plant encyclopedia data
