Propagation Techniques: Growing St. John’s Wort from Root Divisions

Propagation Techniques: Growing St. John’s Wort from Root Divisions

Are you interested in learning how to propagate St. John’s Wort plants using root divisions? In this article, we will explore the step-by-step process of growing St. John’s Wort from root divisions, including the best techniques for success. Whether you are a seasoned gardener looking to expand your plant collection or a beginner wanting to try your hand at propagation, this guide will provide you with all the information you need to successfully grow St. John’s Wort from root divisions.

Understanding St. John’s Wort Propagation

St. John’s Wort is a popular herb known for its medicinal properties, including its ability to improve mood and alleviate symptoms of depression. Propagating St. John’s Wort from root divisions is a common method used by gardeners and herbalists to grow new plants.

What is root division propagation?

Root division propagation involves separating a plant into multiple sections, each containing a portion of the root system. These sections are then replanted to grow into new, individual plants. This technique is commonly used for perennial herbs like St. John’s Wort.

Benefits of using root divisions

  • Easy and cost-effective: Root division propagation is a simple method that requires minimal resources. It allows you to create new plants without having to purchase seeds or rely on other propagation techniques.
  • Faster growth: By dividing the root system, you are essentially jumpstarting the growth process of the new plants. This can result in faster establishment and maturity compared to growing plants from seeds.
  • Maintain genetic traits: When propagating St. John’s Wort from root divisions, you are essentially cloning the parent plant. This ensures that the new plants will retain the same desirable characteristics as the original plant.

Best time for root division

The best time to divide St. John’s Wort roots is in the early spring or fall, when the plant is dormant and not actively growing. This allows the plant to focus its energy on establishing new roots and shoots, increasing the chances of successful propagation. Be sure to choose a healthy, well-established plant for division, and make clean cuts to minimize stress on the plant.

Preparing for Root Division Propagation

Selecting a healthy mother plant

Before starting the root division propagation process, it is crucial to choose a healthy and vibrant mother plant. Look for a St. John’s Wort plant that is free from any signs of disease or pest infestation. The mother plant should also have a strong root system to ensure successful propagation.

Gathering necessary tools and materials

To successfully propagate St. John’s Wort from root divisions, you will need a few essential tools and materials. These include a sharp pair of garden shears or a knife for cutting the roots, a clean pot or container for planting the divisions, high-quality potting soil, and a watering can or spray bottle for watering the newly planted divisions.

Preparing the planting area

Before starting the root division propagation process, prepare the planting area by ensuring that it receives adequate sunlight and has well-draining soil. Clear any weeds or debris from the area and amend the soil with organic matter if needed. This will create the optimal environment for the newly planted divisions to thrive and grow successfully.

Steps to Grow St. John’s Wort from Root Divisions

Step 1: Digging up the plant

To begin the process of growing St. John’s Wort from root divisions, start by carefully digging up the mature plant. Use a shovel to gently loosen the soil around the plant, being careful not to damage the roots. Once the plant is out of the ground, shake off any excess soil to expose the root system.

Step 2: Dividing the root system

Next, carefully divide the root system of the St. John’s Wort plant into smaller sections. Use a sharp knife or garden shears to cut the roots into manageable divisions. Make sure each division has a good balance of roots and foliage to ensure successful growth.

Step 3: Planting the divisions

Finally, plant the divided sections of St. John’s Wort in a suitable location with well-draining soil and plenty of sunlight. Make sure to water the divisions thoroughly after planting to help them establish in their new environment. Keep the soil consistently moist but not waterlogged to promote healthy growth.

By following these steps, you can successfully propagate St. John’s Wort from root divisions and enjoy an abundance of these beautiful and beneficial plants in your garden.


In conclusion, propagating St. John’s Wort from root divisions is a simple and effective technique for expanding your garden or landscape. By following the proper steps and ensuring the health of the parent plant, you can successfully create new plants that will thrive in their new environment. With patience and care, you can enjoy the beauty and benefits of St. John’s Wort for years to come. Happy gardening!