Oenothera tetraptera
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Oenothera tetraptera

Four-wing evening-primrose · Winged evening-primrose · White evening-primrose · Fourwing Evening Primrose

Tier 1 Difficulty: medium Water: low Light: full_sun
Temperature
15–37 °C
Soil pH
5–7
Hardiness
Zone 7–12
Click count
64
Observations
20

Description

Source: leafsnap

Oenothera tetraptera, known as fourwing evening primrose, is a species of flowering plant in the evening primrose family (Onagraceae) native to the Americas. It has widely naturalized in other areas, including southern Africa, Europe, Asia, and Oceania.Oenothera tetraptera was first formally named by Spanish botanist Antonio José Cavanilles in 1796. It is an annual or short-lived perennial herb growing 15–50 cm (0.5–1.6 ft) tall. The four-petaled, white flowers open around sunset. Each petal grows up to 3.8 cm (1.5 in) in length and the flowers change from white to pinkish purple as they age. The fruit is a hairy, obovoid capsule, 7–18 mm in length with wings 2–3 mm wide on the valves, for which the species was named.

Care Guide

💧 Water

The fourwing evening primrose is well adapted to arid conditions and does best with moderate watering once a week. It prefers well-draining soil to avoid root rot. Its growth significantly increases during the rainy season, highlighting its natural relationship with precipitation cycles.

☀️ Light Full sun

Fourwing evening primrose prefers full sun for vigorous growth. It can, however, tolerate partial sunlight. Its natural habitat reflects this preference, although no particular region can be named. Too much or too little light can negatively affect the plant's health.

Ideal: Full sun
FAQ
What are the sunlight requirements for Fourwing evening primrose?

Fourwing evening primrose thrives in full sun, requiring above 6 hours of sunlight daily for robust growth, but can also withstand partial sun exposure of about 3-6 hours. Originating from a habitat that favors maximum solar exposure, the plant's health may be negatively affected by either excessive or insufficient light. It's crucial to observe how sunlight moves through your garden and select locations that offer an optimal balance of light and shade to ensure the plants' well-being.

How can artificial lighting support Fourwing evening primrose indoors?

When natural sunlight is insufficient, especially during winter or in less sunny spaces, artificial lighting becomes essential for the growth of indoor plants like Fourwing evening primrose. LED lights are recommended because they can be customized to provide specific wavelengths needed by the plants. For full sun plants, 30-50W/sq ft is required; partial sun plants need 20-30W/sq ft, while full shade plants should get 10-20W/sq ft. The artificial light source should be placed 12-36 inches above the plant, mimicking the natural daylight hours specific to the plant species, which is typically 8-12 hours per day.

What are the signs of inadequate lighting for Fourwing evening primrose?

Fourwing evening primrose shows several symptoms when grown under inadequate lighting conditions. Indoors, it may exhibit smaller new leaves, leggy or sparse growth, faster leaf dropping, and a halt in new growth signifying survival mode due to poor light. Additionally, lighter-colored new leaves or chlorosis, indicating a lack of chlorophyll and essential nutrients, can occur alongside sunscald, leaf curling, wilting, and leaf scorching from extreme sunlight exposure.

What solutions can help improve the lighting for Fourwing evening primrose?

To improve lighting for Fourwing evening primrose, gradually move plants to sunnier locations, aiming for at least 6 hours of direct sunlight daily. Indoors, keep plants near south-facing windows with curtains open during the day or use artificial lights like desk lamps or professional grow lights for at least 8 hours daily. Outdoors, move plants to better spots gradually to avoid sunburn. If physical obstructions block sunlight, consider pruning or transplanting to sunnier areas with good drainage, especially during plants' dormant periods.

🌡️ Temperature 15–37.8°C

Fourwing evening primrose can adjust to a wide range of temperatures, but its distribution may still be restricted by different combinations of moisture and heat. It does best in warm summers with sufficient rainfall or watering. Extended periods of cloudy, rainy weather or sustained high temperatures raise the likelihood of Fourwing evening primrose dying. In winter, adequate protection from cold can enhance the plant's survival rate.

Ideal temperature: 15–37.8°C
FAQ
What is the Fourwing evening primrose?

The Fourwing evening primrose, known scientifically as Oenothera tetraptera, is a plant species recognized for its distinct characteristics. Unfortunately, there are no further details provided about its essentials, such as care, growing conditions, or its additional attributes. Similarly, information about any specific symptoms related to this plant, possibly in the context of plant diseases or care issues, was not included in the provided data.

💨 Humidity
Humidity:
🪴 Soil 5-7
Soil pH: 5-7
🌱 Fertilizer

When most of the Fourwing evening primrose blooms have opened to full size, resume fertilizing. At the height of bloom production, apply fertilizer again every three to four weeks, as weather allows. Then, once the Fourwing evening primrose begins producing fewer new blooms, cease fertilizing; there is no need to feed the plant when it can no longer produce additional blooms.

🪴 Pot & Repot
✂️ Pruning

The Fourwing Evening Primrose is known for its vibrant yellow flowers and its ability to thrive in a variety of environments. For optimal growth, prune the plant from early to late spring by removing any dead stems. This encourages new growth and improves air circulation. In addition, trimming spent blooms can extend the flowering period and prevent the plant from self-seeding. Cutting back any leggy growth will also help maintain a more compact shape.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Annual
Genus
Oenothera
Family
Onagraceae
Hardiness Zone
7-12
Mature Height
91 cm
Mature Spread
49 cm
Leaf Color
Green, Dark Green
Leaf Type
Semi-evergreen
Flower Color
White
Flower Size
5.08 cm to 7.62 cm
Bloom Time
Late spring, Summer, Early fall
Planting Time
Spring, Summer, Autumn
Harvest Time
Mid summer, Late summer, Fall
Native Area
Colombia, Honduras, Mexico, Guatemala, Bolivia, Venezuela, Peru, Ecuador, Costa Rica

Tags (7)

Common Names (4)

en Four-wing evening-primrose
en Winged evening-primrose
en White evening-primrose
en Fourwing Evening Primrose