Best Practices for Propagating Tarragon in a Greenhouse

Best Practices for Propagating Tarragon in a Greenhouse

Are you looking to expand your tarragon garden in a controlled environment? Propagating tarragon in a greenhouse can be a rewarding experience for any herb enthusiast. In this article, we will discuss the best practices for successfully propagating tarragon in a greenhouse, including tips on lighting, temperature, and soil conditions. Whether you are a beginner or a seasoned gardener, this guide will help you achieve a thriving tarragon crop in your greenhouse.

Choosing the Right Tarragon Variety

When propagating tarragon in a greenhouse, it is important to select the right variety that suits your needs. There are several types of tarragon to choose from, each with its own unique characteristics and flavors. Here are the three main varieties to consider:

French Tarragon

French tarragon (Artemisia dracunculus var. sativa) is considered the most desirable variety for culinary purposes due to its strong and distinct flavor. It is often used in French cuisine to add a unique and aromatic taste to dishes. French tarragon does not produce viable seeds, so it must be propagated through cuttings or division.

Russian Tarragon

Russian tarragon (Artemisia dracunculoides) is a more bitter and less flavorful variety compared to French tarragon. It is often considered a less desirable option for culinary use, but it is easier to grow and more resilient in different growing conditions. Russian tarragon can be grown from seed and is a good option for beginner gardeners.

Mexican Tarragon

Mexican tarragon (Tagetes lucida), also known as Spanish tarragon or Texas tarragon, is not a true tarragon but is often used as a substitute due to its similar flavor profile. It has a hint of licorice flavor and is commonly used in Mexican and Southwestern cuisine. Mexican tarragon is easy to grow and can be propagated from seeds or cuttings.

When selecting a tarragon variety for propagation in your greenhouse, consider your culinary preferences, growing conditions, and level of gardening experience to choose the right option for you. Each variety has its own unique qualities that can enhance the flavor of your dishes and add a touch of freshness to your greenhouse garden.

Preparing the Greenhouse Environment

When propagating tarragon in a greenhouse, it is important to create the ideal environment for the herb to thrive. This includes ensuring the right temperature and light conditions, as well as providing suitable soil and drainage. Additionally, pest and disease control measures should be in place to protect the plants.

Temperature and Light

Tarragon thrives in moderate temperatures, ideally between 60-70 degrees Fahrenheit. Ensure that the greenhouse maintains a consistent temperature within this range to promote healthy growth. Additionally, tarragon requires plenty of sunlight to thrive. Place the plants in a location where they will receive at least 6-8 hours of sunlight per day, or supplement with grow lights if necessary.

Soil and Drainage

Use a well-draining soil mix for tarragon, as the herb does not like to sit in waterlogged conditions. A mix of potting soil and perlite or sand can help improve drainage. Make sure to plant tarragon in pots or containers with drainage holes to prevent water from pooling around the roots. Water the plants only when the top inch of soil is dry to the touch.

Pest and Disease Control

Keep a close eye on tarragon plants for any signs of pests or diseases. Common pests that can affect tarragon include aphids, spider mites, and whiteflies. Use natural remedies like neem oil or insecticidal soap to control pest infestations. Prevent diseases by ensuring good air circulation in the greenhouse and avoiding overhead watering, which can promote fungal growth.

By following these best practices for preparing the greenhouse environment, you can create the ideal conditions for propagating tarragon and enjoying a bountiful harvest of this flavorful herb.

Propagation Methods

Seed Propagation

Seed propagation is one of the common methods used to propagate tarragon in a greenhouse. To start, sow tarragon seeds in a seed tray filled with well-draining soil. Keep the soil moist and provide adequate sunlight for the seeds to germinate. Once the seedlings have grown to a suitable size, they can be transplanted into individual pots for further growth.


Division is another effective method for propagating tarragon. To propagate tarragon through division, carefully dig up the tarragon plant and separate the root ball into multiple sections. Each section should have some roots attached. Replant the divided sections into separate pots with fresh soil and water them well. Division is a quick way to increase the number of tarragon plants in your greenhouse.

Root Cuttings

Root cuttings can also be used to propagate tarragon successfully. To propagate tarragon through root cuttings, cut a healthy root from an established plant and plant it in a pot filled with well-draining soil. Keep the soil moist and provide indirect sunlight for the cutting to develop roots. Once roots have formed, the cutting can be treated as a new tarragon plant and grown in the greenhouse. Root cuttings are a reliable method for propagating tarragon and can result in healthy new plants.

Maintaining and Caring for Tarragon Plants

Tarragon is a popular herb known for its distinct flavor and aroma. To ensure healthy growth and a bountiful harvest, it is important to properly maintain and care for tarragon plants in your greenhouse.

Watering and Fertilizing

Tarragon plants prefer well-draining soil and should be watered regularly to keep the soil evenly moist. Avoid overwatering, as this can lead to root rot. Fertilize tarragon plants with a balanced fertilizer every 4-6 weeks during the growing season to promote healthy growth.

Pruning and Harvesting

Regular pruning is essential for tarragon plants to maintain their shape and encourage new growth. Trim back any leggy or overgrown stems to promote bushier growth. Harvest tarragon leaves as needed by snipping them off with scissors or pruning shears. It is best to harvest tarragon leaves in the morning when their flavor is most potent.

Dealing with Common Issues

Tarragon plants are generally low-maintenance, but they can be susceptible to certain issues such as powdery mildew, root rot, and pests like aphids and spider mites. To prevent these problems, ensure good air circulation around the plants, avoid overwatering, and inspect the plants regularly for any signs of infestation. If necessary, treat affected plants with organic pesticides or fungicides.

By following these best practices for maintaining and caring for tarragon plants in your greenhouse, you can enjoy a thriving herb garden and a bountiful harvest of fresh tarragon for culinary use.

In conclusion, propagating tarragon in a greenhouse can be a rewarding and beneficial practice for any gardener or herb enthusiast. By following the best practices outlined in this article, such as selecting healthy cuttings, providing ample sunlight and moisture, and maintaining appropriate temperatures, you can successfully grow and harvest an abundance of fresh tarragon. Whether you are a beginner or experienced gardener, with patience and dedication, you can enjoy the flavorful and aromatic benefits of homegrown tarragon year-round. Happy gardening!