American Arborvitae (Thuja Occidentalis ‘Bobozam’ MR. BOWLING BALL)

Plant: Table of Contents

American Arborvitae (Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL)

American arborvitae, scientifically known as Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL, is a charming and versatile evergreen shrub that is prized for its compact size and unique ball-shaped appearance. This cultivar is a popular choice for landscaping and container gardening due to its low maintenance and attractive features. In this comprehensive guide, we will explore the culture, uses, care tips, common diseases, and much more about the American arborvitae ‘Bobozam’ MR. BOWLING BALL. Whether you are a gardening enthusiast or a professional landscaper, this guide will provide you with valuable insights into this remarkable plant variety.

What is American Arborvitae (Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL)?

American arborvitae, also known as eastern arborvitae or white cedar, is a species of coniferous tree in the cypress family Cupressaceae. ‘Bobozam’ MR. BOWLING BALL is a specific cultivar within the American arborvitae species, known for its dwarf size and distinctive globose shape. The compact nature of this variety makes it an excellent choice for small gardens, urban landscapes, and container gardening. It is a slow-growing evergreen shrub that adds year-round visual appeal to any setting.

American Arborvitae

Key Takeaways – American Arborvitae (Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL)

Before delving into the specific aspects of culture, uses, care, and maintenance of the American arborvitae ‘Bobozam’ MR. BOWLING BALL, let’s summarize the key takeaways for quick reference:

  • Botanical Name: Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL
  • Common Name: American Arborvitae
  • Plant Type: Evergreen shrub
  • Mature Height: 2-3 feet
  • Mature Width: 2-3 feet
  • Growth Rate: Slow
  • Exposure: Full sun to partial shade
  • Hardiness Zone: 3-7
  • Soil Preference: Well-draining, fertile soil
  • Watering: Regular watering, especially during the first year
  • Uses: Landscaping, container gardening, privacy screen, ornamental specimen
  • Pest & Disease Resistance: Good

Now that we have an overview of the American arborvitae ‘Bobozam’ MR. BOWLING BALL, let’s explore each aspect in more detail.



American arborvitae (Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL) is a versatile plant with various practical and aesthetic uses in landscaping and gardening. Some of the common uses include:

  • Landscaping: The compact size and attractive round shape make it an excellent choice for landscaping in small gardens, urban settings, and rock gardens.
  • Container Gardening: Its dwarf nature and low maintenance requirements make it ideal for growing in containers on patios, balconies, and other confined spaces.
  • Privacy Screen: When planted in multiples, American arborvitae ‘Bobozam’ MR. BOWLING BALL can be used to create a dense and decorative privacy screen or hedge.
  • Ornamental Specimen: The unique foliage and shape of this cultivar make it a captivating ornamental specimen in any garden or landscape setting.


Proper watering is crucial for the health and vigor of American Arborvitae. Especially during the establishment phase, regular watering is essential to ensure adequate moisture for the roots to develop. Here are some key points to keep in mind regarding the water requirements of this plant:

  • Establishment Phase: Water deeply immediately after planting to encourage root establishment. Provide supplemental water as needed, especially during dry periods.
  • Mature Plants: Once established, American arborvitae ‘Bobozam’ MR. BOWLING BALL is moderately drought-tolerant but will benefit from regular watering, particularly in hot and dry conditions.
  • Overwatering: Avoid overwatering, as it can lead to root rot and other water-related issues. Ensure that the soil has good drainage to prevent waterlogging.


American arborvitae ‘Bobozam’ MR. BOWLING BALL thrives in full sun to partial shade. Adequate sunlight is crucial for promoting healthy growth and maintaining the plant’s compact shape. Here’s what you need to know about sunlight requirements for this cultivar:

  • Full Sun: Ideally, provide at least 6 hours of direct sunlight per day for optimal growth and density.
  • Partial Shade: It can tolerate some shade, especially during the hottest part of the day, but prolonged low-light conditions may result in sparse growth and reduced density.


Fertilizing American arborvitae ‘Bobozam’ MR. BOWLING BALL is essential for ensuring balanced growth and vibrant foliage. Here are some guidelines for fertilizing this plant:

  • Timing: Apply a balanced, slow-release fertilizer in early spring before the new growth begins. Avoid fertilizing late in the growing season, as it may stimulate late-season growth that can be vulnerable to frost damage.
  • Application Rate: Follow the recommended application rate for the specific fertilizer product, and avoid over-fertilizing, as excessive nutrients can be detrimental to the plant.
  • Formulation: Consider using a fertilizer specifically formulated for evergreen shrubs to provide the necessary nutrients in the right proportions.


The right soil conditions are crucial for the overall health and performance of American arborvitae ‘Bobozam’ MR. BOWLING BALL. Here’s what you need to know about soil preferences for this cultivar:

  • Well-draining Soil: Ensure that the soil is well-draining to prevent waterlogging, which can lead to root rot and other issues.
  • Fertility: The plant thrives in fertile soil, so amending with organic matter such as compost can improve soil fertility and structure.
  • pH Level: American arborvitae prefers slightly acidic to neutral soil with a pH range of 6.0-7.0. Conduct a soil test to determine the pH and make any necessary adjustments.


Pruning American arborvitae ‘Bobozam’ MR. BOWLING BALL is essential for maintaining its compact and rounded shape. Proper pruning practices can also help improve air circulation and sunlight penetration within the plant, reducing the risk of disease. Here are some pruning tips for this cultivar:

  • Timing: The best time to prune American arborvitae is in early spring before new growth emerges. Avoid pruning in late fall, as it can leave the plant vulnerable to winter damage.
  • Deadwood Removal: Remove any dead, damaged, or diseased branches as soon as they are noticed to prevent the spread of disease and maintain the plant’s overall health.
  • Shape Maintenance: Use hand pruners or hedge shears to trim the outer foliage and maintain the desired rounded form of the plant.


Propagating American arborvitae ‘Bobozam’ MR. BOWLING BALL can be achieved through several methods, including cuttings and layering. Here are some common propagation techniques for this cultivar:

  • Softwood Cuttings: Take softwood cuttings from the current season’s growth in late spring or early summer. Dip the cut ends in a rooting hormone and plant them in a well-draining propagation medium.
  • Layering: Air layering or ground layering can be used to propagate American arborvitae. This method involves encouraging a stem to produce roots while it is still attached to the parent plant before eventually separating it to form a new plant.

Container Popularity

American arborvitae ‘Bobozam’ MR. BOWLING BALL is a popular choice for container gardening, thanks to its compact size and low maintenance requirements. When grown in containers, this plant adds year-round visual interest to patios, balconies, and small outdoor spaces. Its spherical shape and vibrant foliage make it an excellent choice for adding greenery and texture to container gardens.

With careful attention to watering, sunlight, and occasional feedings, American arborvitae ‘Bobozam’ MR. BOWLING BALL can thrive in containers for many years. Ensure that the container has adequate drainage to prevent waterlogging, and consider repotting the plant every few years to refresh the soil and provide additional growing space.

Common Diseases

American arborvitae ‘Bobozam’ MR. BOWLING BALL is relatively resistant to most common diseases that affect arborvitae species. However, it may occasionally encounter certain issues that can impact its health and appearance. Some of the common diseases that may affect this cultivar include:

  • Canker Diseases: These fungal diseases can cause sunken lesions on the stems and branches, leading to dieback and ultimately impacting the overall health of the plant.
  • Needle Blight: Several fungal pathogens can cause needle blight, resulting in the browning and shedding of foliage. Proper sanitation and cultural practices can help minimize the risk of needle blight.
  • Root Rot: Overly wet or poorly drained soils can lead to root rot, a serious condition that affects the roots and can cause decline or death of the plant.

Disease Diagnosis

Diagnosing diseases in American arborvitae ‘Bobozam’ MR. BOWLING BALL involves careful observation of the plant’s symptoms and, in some cases, consulting with a plant health professional for accurate identification. Common signs of disease in this cultivar include browning or yellowing foliage, abnormal growth patterns, and dieback of branches. It is important to promptly address any signs of disease to prevent further spread and mitigate potential damage to the plant.

Common Pests

American arborvitae ‘Bobozam’ MR. BOWLING BALL is generally resistant to most common pests, but it may occasionally face infestations from certain insects. Some of the common pests that may affect this cultivar include:

  • Spider Mites: These tiny arachnids can cause stippling and discoloration of foliage, leading to a decline in the plant’s overall appearance.
  • Bagworms: The larvae of bagworm moths can construct protective bags from plant material, leading to defoliation and potential damage to the plant.

Implementing proactive pest monitoring and practicing good garden hygiene can help prevent pest infestations and minimize their impact on American arborvitae ‘Bobozam’ MR. BOWLING BALL.

Botanist’s Tips

To ensure the successful growth and long-term health of American arborvitae ‘Bobozam’ MR. BOWLING BALL, consider the following expert tips:

  • Soil Preparation: Prepare the planting site by ensuring that the soil is well-draining and fertile. Incorporate organic matter to improve soil structure and nutrient content.
  • Regular Monitoring: Routinely monitor the plant for signs of pests, diseases, or developmental issues. Early identification and intervention can help prevent significant damage.
  • Proper Pruning: Follow proper pruning techniques to maintain the plant’s shape and improve airflow within the canopy, reducing the risk of disease.
  • Watering Consistency: Establish a regular watering schedule, especially during the first year of growth, to promote healthy root development and overall vigor.

Fun Facts

  • American arborvitae, including the ‘Bobozam’ MR. BOWLING BALL cultivar, is also known for its aromatic foliage, which releases a pleasant fragrance when crushed or brushed against.
  • The compact size and rounded appearance of ‘Bobozam’ MR. BOWLING BALL make it a popular choice for creating miniature landscapes and ornamental features in garden settings.

Links to External Resources

For additional information on American arborvitae (Thuja occidentalis ‘Bobozam’ MR. BOWLING BALL), consider exploring the following resources:

  1. United States Department of Agriculture – Plant Fact Sheet: Thuja occidentalis
  2. Missouri Botanical Garden – American Arborvitae (Thuja occidentalis)
  3. The Spruce – American Arborvitae: A Profile of a Popular Landscape Plant
  4. University of Maryland Extension – Common Problems of Arborvitae and Cedar

In conclusion, American arborvitae ‘Bobozam’ MR. BOWLING BALL is a distinctive and captivating evergreen shrub that offers a range of practical and aesthetic benefits for gardeners, landscapers, and outdoor enthusiasts. Its unique characteristics, low maintenance requirements, and overall resilience make it a valuable addition to any garden or landscape setting.

By understanding and implementing the recommended care practices and considerations outlined in this guide, you can cultivate thriving American arborvitae ‘Bobozam’ MR. BOWLING BALL plants and enjoy their beauty for years to come.

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Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.