Updated: July 5, 2023

Viburnum plants are a popular choice among gardeners due to their beautiful flowers, attractive foliage, and versatile nature. These plants can be found in various sizes and forms, ranging from compact shrubs to large trees. One of the factors that gardeners often consider before choosing a plant is how quickly it will grow. In this article, we will explore the growth rate of viburnum plants and provide some tips for promoting healthy growth.

Factors Affecting Growth Rate

Several factors can influence the growth rate of viburnum plants. Understanding these factors can help gardeners create optimal conditions for their viburnum to thrive.

Variety

There are numerous species and cultivars of viburnum plants available, each with its own growth characteristics. Some varieties may be slow-growing, while others can grow rapidly. It is essential to research the specific variety you are interested in planting to learn about its growth rate.

Climate

The climate in which a viburnum plant is grown can significantly impact its growth rate. Viburnums are generally hardy plants that can tolerate a wide range of climates. However, they tend to grow more slowly in colder regions or during periods of extreme heat or drought.

Soil Conditions

Viburnums prefer moist, well-draining soil with a slightly acidic to neutral pH level. Poor soil conditions, such as heavy clay or sandy soil, can hinder the plant’s growth. Amending the soil with organic matter, such as compost or peat moss, can improve its texture and fertility, promoting better growth.

Sunlight Exposure

Most viburnum species thrive in full sun to partial shade conditions. However, the amount of sunlight they receive can affect their growth rate. Plants grown in full sun tend to grow more vigorously compared to those grown in shady areas. It is important to consider the specific sunlight requirements of the viburnum variety you have chosen.

Growth Rate of Common Viburnum Varieties

While the growth rate can vary among different viburnum varieties, here are some commonly grown species and their typical growth rates:

Viburnum opulus (European Cranberry Bush)

Viburnum opulus is a deciduous shrub that is known for its showy white flowers and red berries. It typically grows at a moderate pace, reaching a height and width of 8 to 12 feet over a span of 10 to 15 years. However, some cultivars, such as ‘Roseum’ or ‘Sterile,’ may have a slower growth rate.

Viburnum dentatum (Arrowwood Viburnum)

Arrowwood viburnum is a native shrub that features clusters of white flowers and blue-black berries. It has a relatively fast growth rate, reaching a height and width of 6 to 10 feet within 5 to 7 years. With proper care, it can continue growing at a steady pace.

Viburnum plicatum (Japanese Snowball Bush)

The Japanese snowball bush is a deciduous shrub that produces rounded clusters of white flowers in spring. It has a moderate growth rate, usually reaching a height and width of 8 to 12 feet over a span of 10 to 15 years. Some cultivars, such as ‘Mariesii,’ may have a slower growth rate but offer unique characteristics such as lacecap flowers.

Viburnum lantana (Wayfaring Tree)

Viburnum lantana is a large deciduous shrub or small tree that produces creamy-white flowers followed by red berries. It has a relatively fast growth rate, reaching a height and spread of 10 to 15 feet within 5 to 10 years. This viburnum variety can create an impressive focal point in the landscape.

Tips for Promoting Healthy Growth

To encourage healthy growth and maximize the potential of your viburnum plants, consider the following tips:

Planting and Watering

Proper planting techniques are essential for establishing viburnum plants. Dig a hole that is slightly wider and deeper than the plant’s root ball. Backfill with amended soil and water thoroughly. After planting, provide regular watering, especially during dry periods, to keep the soil moist but not waterlogged.

Pruning

Regular pruning can help shape viburnum plants and promote better growth. Prune in early spring before new growth emerges or after flowering, depending on the specific variety. Remove dead or damaged branches, as well as any crossing or crowded stems. This will improve air circulation and prevent disease.

Fertilizing

Viburnums generally do not require heavy fertilization. However, applying a balanced slow-release fertilizer in early spring can provide the necessary nutrients for healthy growth. Follow the instructions on the fertilizer package for application rates and timing.

Mulching

Applying a layer of organic mulch around the base of your viburnum plants can help retain soil moisture, regulate soil temperature, and suppress weed growth. Keep the mulch a few inches away from the plant’s stems to prevent rot.

Conclusion

The growth rate of viburnum plants can vary depending on factors such as variety, climate, soil conditions, and sunlight exposure. By understanding these factors and providing optimal growing conditions, gardeners can ensure healthy and vigorous growth in their viburnum plants. Whether you choose a slow-growing variety or one with a more rapid growth rate, viburnums are sure to enhance any landscape with their stunning flowers and foliage.