Also known as Butterfly Gaura · Evening Primrose · Guara
Clockweed (Oenothera lindheimeri) is a graceful perennial producing abundant delicate pink or white flowers that open in the evening and close by midday.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
100% intensity
Prefers at least 6-8 hours of direct sunlight daily for best flowering.
Moderate
50% intensity
Allow soil to dry slightly between waterings. Reduce in fall/winter.
Well-drained
50% intensity
Moderate
50% intensity
Prefers average room temperatures (18-24°C) during the growing season. Can tolerate cooler temperatures in winter.
Low
25% intensity
Fertilize sparingly in spring with a balanced, slow-release formula.
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
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly during the growing season, allowing the soil to dry slightly between waterings. Reduce watering in fall and winter. Drought tolerant once established, but consistent moisture promotes better flowering.
Avoid waterlogged conditions which can lead to root rot.
Deadhead spent flowers regularly to encourage more blooms and a tidier appearance. Cut back plants in late winter or early spring to remove dead or damaged growth and to shape the plant.
This also stimulates new, vigorous growth.
Easily propagated from seed sown in early spring or fall. Can also be propagated by stem cuttings taken in late spring or early summer. Cuttings should be rooted in a well-draining medium and kept moist.
As Oenothera lindheimeri is often grown as an annual or short-lived perennial, frequent repotting is generally not required. If grown in a container, repot when the plant becomes root-bound, typically every 1-2 years in spring, using a well-draining potting mix.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Clockweed (Oenothera lindheimeri)
Where Clockweed (Oenothera lindheimeri) 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 lindheimeri |
Similar in genus Oenothera
Answers based on plant encyclopedia data
