Sundrop and Evening Primrose: The Perfect Day and Night Bloomers

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Lawn & Garden

Sundrop and evening primrose belong to the same genus and are known for their stunning golden petals that bloom throughout the day and night respectively. They are commonly found in traditional gardens and have been admired for their beauty for many years. The genus name ‘Oenothera’ comes from the Greek words ‘oinos’ meaning wine and ‘thera’ meaning hunt, due to the confusion between this flower and another genus with wine-scented roots.

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Sundrop is a perennial plant that grows up to 2 feet tall and has simple alternate leaves on strong stems. The plant produces bright yellow, 4-petaled flowers up to 2 inches in diameter during the summer. The basal rosettes remain evergreen in colder areas. Sundrops are easy to care for and can be grown in poor soil, as they are drought-resistant. However, they require full sun and well-drained soil. They are shallow-rooted and can become pushy if grown in good soil, but are easily controlled.

You can propagate sundrop by division in the spring or by seed. This flower is perfect for wild gardens and can be used to edge fields and meadows. The flowers can also be gathered for winter bouquets as the seedpods are very attractive.

There are many species of Oenothera that are useful for the garden. Oenothera fruticosa is a wildflower found in the eastern United States and is usually found in traditional gardens. ‘Youngi’ is a newer variety available in nurseries today. ‘Fireworks’ has brilliant yellow flowers on 18-inch stems. Oenothera macrocarpa stays about 1 foot high, but the blossoms are often showy and 4 inches wide. The trailing stems carry a succession of lemon-yellow flowers opening in early afternoon, making them ideal for rock gardens. Oenothera speciosa is another wildflower that is a rampant spreader in the wild garden. ‘Rosea’ has light pink flowers and is great for border edging. O. berlandieri is similar but less aggressive. ‘Siskiyou’ is deep rose pink.

The scientific name for sundrop is Oenothera species.

Want to learn more about gardening? Check out these resources:

  • Perennial Flowers
  • Perennials
  • Annual Flowers


1. What is Sundrop?

Sundrop is a common name for the evening primrose plant, which is native to North America and is often found in temperate regions. It is a perennial plant that produces bright yellow flowers that bloom during the summer months. The plant is also known for its oil, which is extracted from its seeds and is used in various industries, including cosmetics and food production.

2. What are the health benefits of Sundrop oil?

Sundrop oil is rich in essential fatty acids, particularly gamma-linolenic acid (GLA), which has been shown to have anti-inflammatory properties. As a result, Sundrop oil is often used as a natural remedy for conditions such as rheumatoid arthritis, eczema, and other inflammatory conditions. It is also believed to have a positive effect on heart health, as it may help to lower cholesterol levels and reduce the risk of heart disease.

3. Is Sundrop oil safe to use?

Sundrop oil is generally considered safe for use when taken in recommended doses. However, like any supplement, it may cause side effects in some people, such as upset stomach, nausea, or diarrhea. It is also important to note that Sundrop oil may interact with certain medications, such as blood thinners or anticonvulsants, so it is important to talk to your healthcare provider before taking Sundrop oil if you are taking any medications.

4. How is Sundrop oil used in cosmetics?

Sundrop oil is often used in cosmetics due to its moisturizing and anti-inflammatory properties. It is commonly found in skincare products such as lotions, creams, and serums, as it may help to soothe dry, irritated skin and improve skin elasticity. It is also used in hair care products, as it may help to nourish and strengthen hair and improve scalp health.

5. How is Sundrop oil used in cooking?

Sundrop oil is often used in cooking due to its high smoke point and mild flavor. It is commonly used in salad dressings, marinades, and sautéing, as it may help to enhance the flavor of the dish without overpowering it. It is also a popular choice for baking, as it may help to create moist, tender baked goods.

6. Where can I buy Sundrop oil?

Sundrop oil is widely available at health food stores and online retailers. When shopping for Sundrop oil, it is important to look for a high-quality, cold-pressed oil that has been produced without the use of harsh chemicals or solvents. It is also important to check the expiration date and storage instructions, as Sundrop oil may become rancid if not stored properly.

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