Updated: July 9, 2023

Rhubarb is a delicious and versatile perennial plant that is commonly used in pies, jams, and other desserts. It is also a popular addition to vegetable gardens due to its attractive foliage and low maintenance requirements. If you are planning on growing rhubarb in your garden, one important consideration is how much space to leave between each plant. In this article, we will explore the ideal spacing for rhubarb plants and the benefits of giving them enough room to grow.

Why Spacing Matters

Proper spacing is crucial for the healthy growth of any plant, and rhubarb is no exception. By giving each plant enough space, you allow them to receive adequate sunlight, air circulation, and access to nutrients in the soil. Overcrowding can lead to stunted growth, increased susceptibility to diseases, and competition for resources among the plants.

General Spacing Guidelines

When it comes to spacing rhubarb plants, there are some general guidelines that can help ensure their optimal growth. The recommended distance between each plant depends on whether you are growing rhubarb from seeds or dividing existing plants.

Spacing for Seed-Grown Rhubarb

If you are starting rhubarb plants from seeds, it is essential to give them enough space right from the beginning. Sow the seeds approximately 2 inches apart in rows that are 24 inches apart. This spacing allows enough room for the seedlings to develop without crowding each other.

Once the seedlings have grown to a size where they have their first true leaves, thin them out so that they are around 12 inches apart. This will provide sufficient space for their roots to spread out and avoid overcrowding as they mature.

Spacing for Divided Rhubarb Crowns

Dividing established rhubarb crowns is a common method of propagation. When dividing rhubarb plants, it is important to provide enough space for each new crown to grow and thrive. The recommended spacing for divided rhubarb crowns is approximately 3 to 4 feet between each plant.

To divide rhubarb crowns, carefully dig up the entire plant and separate the crowns into individual sections. Ensure that each section has at least one bud and a healthy root system. Plant the divided crowns in well-prepared soil, with the recommended spacing between each plant.

Benefits of Proper Spacing

Giving your rhubarb plants ample space to grow offers several benefits that contribute to their overall health and productivity.

Sunlight and Air Circulation

Rhubarb plants require at least six hours of direct sunlight per day to thrive. By providing adequate space between each plant, you ensure that they receive sufficient sunlight without being shaded by neighboring plants. This allows for optimal growth and promotes the development of strong and healthy stalks.

Proper spacing also allows for better air circulation around the plants. Good airflow helps prevent the buildup of moisture, which can lead to fungal diseases such as powdery mildew. Adequate air circulation helps keep the foliage dry, reducing the risk of diseases and promoting healthier plants.

Nutrient Availability

Each rhubarb plant requires a significant amount of nutrients from the soil to grow vigorously. By giving them enough space, you prevent competition among neighboring plants for these essential nutrients. This ensures that each plant has access to an adequate supply of nutrients, promoting robust growth and higher yields.

Easier Maintenance

Proper spacing makes it easier to manage and maintain your rhubarb plants. Ample space between each plant allows for easier weeding, watering, and harvesting. It also reduces the risk of accidentally damaging neighboring plants while performing routine garden tasks.

Conclusion

Proper spacing is vital for the successful growth of any plant, including rhubarb. Whether you are starting rhubarb from seeds or dividing existing crowns, it is crucial to provide enough space between each plant for optimal growth and development. By following the recommended spacing guidelines, you can ensure that your rhubarb plants receive adequate sunlight, air circulation, and access to nutrients, resulting in healthier and more productive plants. Happy gardening!