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How Much Space to Leave Between Each Evening Primrose Plant

Updated: June 2, 2022

Evening primrose is a beautiful and vibrant flowering plant that can add a pop of color to any garden. However, when it comes to planting evening primrose, it’s important to consider the optimal spacing between each plant. Proper spacing ensures that each plant has enough room to grow and flourish, while also preventing overcrowding and competition for resources. In this article, we’ll explore how much space to leave between each evening primrose plant.

Factors to Consider

Before we dive into the ideal distance between each evening primrose plant, it’s important to consider some factors that can impact spacing requirements. These factors include:

  • Type of evening primrose: There are several species of evening primrose, including common evening primrose (Oenothera biennis) and sundrops (Oenothera fruticosa). Each species may have different spacing requirements.
  • Plant size: Evening primrose plants can range in size from 1 foot tall to over 6 feet tall. Larger plants will require more space than smaller ones.
  • Growth habit: Some evening primrose plants have a clumping growth habit, while others spread out through runners or rhizomes. The growth habit can impact the amount of space needed for each plant.

Ideal Spacing for Evening Primrose

In general, it’s recommended to leave about 12-18 inches of space between each evening primrose plant. This spacing allows the plants enough room to grow and spread out without becoming overcrowded.

If you’re planting an entire bed of evening primrose, you’ll want to ensure that each row is spaced at least 12 inches apart as well. This will prevent overcrowding and ensure that each plant receives adequate light and nutrients.

When planting evening primrose, it’s also important to consider the soil type and drainage. These plants prefer well-draining soil, so if your soil tends to hold onto moisture, you may want to consider spacing your plants out even further to prevent root rot.

Alternatives to Traditional Spacing

While the standard spacing for evening primrose is 12-18 inches, there are some alternative methods you can use to plant these flowers.

One option is to plant in clusters. Rather than spacing each plant out individually, you can group several plants together in a cluster. This creates a fuller look and can be especially effective for smaller evening primrose varieties.

Another option is to plant evening primrose in a container. This allows you to control the soil type and drainage more easily, while also providing flexibility in terms of spacing. You can plant multiple evening primrose plants in a single container, as long as the container is large enough to accommodate them.


Can I plant evening primrose closer together than 12 inches?

While it’s possible to plant evening primrose closer than 12 inches apart, it’s not recommended. Spacing the plants too closely can lead to overcrowding, which in turn can cause stunted growth and poor flowering.

How often should I water evening primrose?

Evening primrose prefers well-draining soil and typically requires watering once or twice a week, depending on the weather conditions. However, it’s important not to overwater these plants, as they are susceptible to root rot.

When is the best time to plant evening primrose?

The best time to plant evening primrose is in the spring or fall. These plants prefer cooler temperatures and will struggle in hot summer weather.

In conclusion, proper spacing is crucial when planting evening primrose. By leaving 12-18 inches of space between each plant, you’ll ensure that they have enough room to grow and thrive. Additionally, considering factors such as soil type and drainage can help you create an optimal growing environment for these vibrant and beautiful flowers.

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