Updated: June 30, 2023

Lemon verbena (Aloysia citrodora) is a delightful herb that offers not only a fresh lemony fragrance but also numerous health benefits. If you are considering growing this plant in your garden or indoors, one of the essential aspects to consider is its growth height. In this article, we will explore the average height of a lemon verbena plant and factors that can influence its growth.

Average Height of a Lemon Verbena Plant

Lemon verbena plants are known for their upright growth habit and can reach an impressive height. On average, a fully mature lemon verbena plant can grow between 3 to 6 feet tall (0.9 to 1.8 meters). However, it is important to note that the height can vary depending on various factors such as growing conditions, pruning, and maintenance.

Factors Affecting Growth

Several factors contribute to the growth of lemon verbena plants. Understanding these factors can help you create an optimal environment for your plant’s growth and ensure it reaches its maximum potential height.

Growing Conditions

The growing conditions play a significant role in determining the height of a lemon verbena plant. Lemon verbena thrives in warm climates and requires full sunlight for at least six hours a day. In areas with cooler climates, it is advisable to grow lemon verbena in containers so you can bring it indoors during colder months.

Additionally, lemon verbena prefers well-drained soil with a pH level between 6 and 7.5. Proper soil preparation and regular watering are crucial for its growth. Make sure the soil retains moisture but is not waterlogged, as excessive moisture can lead to root rot. Adequate spacing between plants is also important to allow air circulation and prevent overcrowding, which can hinder their growth.

Pruning

Pruning lemon verbena plants can have a significant impact on their height. Regular pruning not only helps maintain the desired shape but also encourages healthier growth. By removing dead or damaged branches, you allow the plant to focus its energy on new growth.

To prune a lemon verbena plant, cut back the stems by one-third every spring. This will promote bushier growth and prevent the plant from becoming leggy. However, if you prefer a taller plant, you can skip or reduce the amount of pruning.

Fertilization

Proper fertilization can enhance the growth of lemon verbena plants. Before planting, amend the soil with organic matter such as compost to improve its nutrient content. During the growing season, apply a balanced fertilizer, such as a 10-10-10 formula, once every four to six weeks.

Avoid over-fertilizing, as this can lead to excessive leaf growth at the expense of flower production. Follow the instructions on the fertilizer packaging and adjust accordingly based on your plant’s specific needs.

Watering

Watering is crucial for the growth and overall health of lemon verbena plants. While they prefer slightly moist soil, overwatering can be detrimental. Allow the top inch of soil to dry out between watering sessions to prevent root rot.

In hot and dry weather conditions, lemon verbena may require more frequent watering. However, be mindful not to create waterlogged conditions. Consider using mulch around the base of the plant to retain moisture and regulate soil temperature.

Growth Variations

Although the average height range for lemon verbena plants is 3 to 6 feet tall, there can be variations depending on the specific variety or cultivar. Some lemon verbena cultivars are bred to be more compact and may reach a height of only 2 feet (0.6 meters). On the other hand, certain varieties may grow even taller under optimal conditions.

If you are specifically looking for a lemon verbena plant with a certain height range, it is advisable to consult with a local nursery or research the specific variety you are interested in.

Conclusion

Lemon verbena plants are not only a delightful addition to any garden or indoor space but also offer various culinary and medicinal benefits. Understanding the factors that affect their growth, such as growing conditions, pruning, fertilization, and watering, can help ensure they reach their maximum height potential.

With proper care and attention, you can enjoy a thriving lemon verbena plant that will not only add beauty to your surroundings but also provide you with fresh lemony fragrance and a host of health benefits.