Fourwing evening primrose (Oenothera tetraptera)

Also known as: Four-petaled Evening Primrose

During the flowering season, which typically spans summer to fall, some flowers start the evening with white petals. By the next morning, these petals can transform to a light pink hue.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Fourwing evening primrose

Lifespan

Annual

Plant Type

Herb

Plant Height

1 m

Spread

50 cm

Leaf Color

Green

Flower Size

2-4 cm

Flower Color

White Yellow Pink

Images of Fourwing evening primrose

Quickly Identify Fourwing evening primrose

Identification of Oenothera tetraptera can be simplified by observing its four-petaled flowers which typically bloom in the evening and have white or light yellow hues. The plant usually has a rosette of leaves at the base, with elongated stems that bear the flowers.

Scientific Classification of Fourwing evening primrose

Phylum

Vascular plants

Class

Dicotyledons

Order

Myrtales

Family

Evening primrose

Genus

Evening Primrose

Species

Fourwing evening primrose

Planting and Growing of Fourwing evening primrose

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Full sun

Sunshine Duration

6-10 hours

Ideal Temperature

68-77℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Fourwing evening primrose?

Oenothera tetraptera thrives when watered moderately. Aim for about 250 ml per watering. The soil should be kept evenly moist but not soggy, allowing the top inch to dry out slightly between waterings.

What are the symptoms of an underwatered Fourwing evening primrose? ›

What should I do if my Fourwing evening primrose is not getting enough water? ›

What are the symptoms of an overwatered Fourwing evening primrose? ›

How to save an overwatered Fourwing evening primrose? ›

What Are the Sunlight Requirements for Fourwing evening primrose?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6-8 hours daily

Oenothera tetraptera thrives in full to partial sun conditions, empowering robust growth and vivid blooms by maximizing available sunlight.

What is the best lighting condition for Oenothera tetraptera? ›

Solutions for ideal lighting for Oenothera tetraptera? ›

Benefits of ideal light for Oenothera tetraptera? ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Fourwing evening primrose?

Ideal Temperature: 68 ~ 77℉

Oenothera tetraptera thrives best at temperatures between 68°F and 77°F. This range allows for optimal photosynthesis and metabolism, ensuring healthy growth and vibrant blooms.

What Soil is Best for Fourwing evening primrose?

Soil type: Sandy loam, Loam, Sandy soil

Soil PH: 6.5 ~ 7.5

Oenothera tetraptera thrives best in well-drained soils to prevent waterlogging. Good drainage ensures oxygen reaches the roots, promoting robust plant growth and longevity. While moderately adaptable, this plant benefits from soils with nutrient content. Adequate nutrients help support vibrant flower blooms and improve resilience against pests and diseases. The soil should retain enough moisture without becoming too heavy or soggy. This balance helps to maintain a consistent supply of water, vital for the plant's cellular processes and overall health.

How to Fertilize Fourwing evening primrose?

Fertilizer type: Balanced

Oenothera tetraptera is a relatively low-maintenance plant with modest fertilization needs. When applying liquid fertilizer, use a diluted solution at one-quarter the recommended strength to prevent overfeeding. For slow-release fertilizers, apply 100-150 grams per square meter to ensure a steady nutrient supply without overwhelming the plant.

How to Prune Fourwing evening primrose?

Pruning Time: Spring, Summer

Start by identifying any dead or diseased stems. Cut these back to the base to promote healthier growth. Dead stems are often brittle and brown, while diseased ones might have discolored leaves or unusual spots. Removing them helps prevent the spread of diseases within the plant. After removing undesirable growth, focus on shaping your Oenothera tetraptera. Aim for a balanced appearance, removing any wayward stems that disrupt the symmetry of the plant. Cut back to a leaf node, which will encourage new growth, making sure the plant maintains its distinctive form. More About Pruning Techniques→

How to Propagate Fourwing evening primrose plant?

Propagate Time: Spring, Early summer

Collect fresh seeds from a mature Oenothera tetraptera plant. Clean and dry them properly before use. This step ensures that the seeds are viable for germination, free from mold or decay.

Fill the seed tray with the growing medium and lightly press the seeds into the surface. Do not cover them too deeply. This promotes better contact with the growing medium and allows light exposure, which facilitates germination.

Water the seeds gently using a spray bottle or a fine nozzle watering can. Ensure the growing medium is moist but not waterlogged. Regularly check moisture levels to maintain the right conditions.

More About Propagating Techniques→

How to Repot Fourwing evening primrose plant?

Repotting frequency: Every 2-3 years

Oenothera tetraptera signals its need for repotting when roots start showing through the drainage holes or when the plant appears stunted and hasn't shown much growth recently. The best time to repot is in spring, just before the plant embarks on its active growing phase. This timing minimizes stress and allows the plant to recover quickly, taking full advantage of the upcoming growing season.

Select a pot that is just one size larger than the current one, ensuring it has drainage holes to prevent waterlogging. A slightly bigger pot promotes healthy growth by giving the roots more space while preventing the excess moisture that can lead to root rot. Avoid going too big, as this can retain too much water and also lead to stability issues, making the plant top-heavy.

Use a well-draining potting mix, ideally mixed with some sand or perlite to enhance drainage. Oenothera tetraptera thrives in soil that neither retains too much moisture nor dries out too quickly. This kind of soil provides good aeration for the roots, ensuring they receive sufficient oxygen for healthy growth while avoiding the risk of root rot.