Boxwood Plant Guide
Boxwoods are classic evergreen shrubs that have been used in formal and residential landscapes for generations. Their dense foliage, compact growth, and ability to be shaped make them popular for foundation plantings, borders, hedges, walkways, and formal garden designs.
In South Louisiana, boxwoods can provide year-round greenery and structure, but they require thoughtful planting and maintenance. Louisiana's heat, humidity, rainfall, and drainage conditions can create challenges for these shrubs, particularly when plants are overcrowded or planted in poorly drained soil.
With the right location and proper care, boxwoods can be an attractive and versatile addition to many South Louisiana landscapes.
What Are Boxwoods?
Boxwood refers to shrubs in the Buxus genus. Several types and cultivars are grown in Louisiana, including Japanese, littleleaf, Korean, common, and hybrid boxwoods.
They are evergreen shrubs valued primarily for their foliage rather than flowers. Their small leaves and dense branching structure allow them to be sheared into formal shapes or maintained in a more natural form.
Boxwoods are especially popular in formal landscape designs because they create clean lines and defined spaces.
Sun Requirements
Boxwoods generally perform well in full sun to partial shade, although the ideal amount of sunlight can depend on the particular variety and planting location.
In South Louisiana, some afternoon protection can be beneficial, especially in locations exposed to intense summer heat.
Good locations may include:
Morning sun with afternoon shade
Filtered sunlight
Partial shade
Areas receiving several hours of direct sunlight
Avoid placing boxwoods in extremely dark locations where they receive very little light, as inadequate sunlight can result in thinner growth.
Water Requirements
Boxwoods prefer consistent moisture but do not perform well in constantly saturated soil.
Newly planted boxwoods should receive regular irrigation while they establish their root systems. Once established, they can tolerate periods of moderate dryness, but prolonged drought can cause stress.
South Louisiana's frequent rainfall creates a different challenge: excess water.
Poor drainage and overwatering can increase the risk of root and crown rot. LSU AgCenter identifies poor drainage, overirrigation, soil compaction, overcrowding, and improper planting practices as conditions that can contribute to Phytophthora problems in boxwoods.
When watering, focus on the root zone rather than repeatedly wetting the foliage.
Soil Requirements
Well-drained soil is one of the most important considerations when planting boxwoods in South Louisiana.
Boxwoods can struggle when their roots remain wet for extended periods.
Before planting, evaluate:
Drainage
Soil compaction
Soil type
Existing irrigation
Nearby downspouts
Low areas where water collects
If a planting bed stays saturated after heavy rainfall, improving drainage should be addressed before installing boxwoods.
Raised planting areas can sometimes help improve drainage where appropriate.
Mature Size
Boxwood size varies considerably depending on the species and cultivar.
Some dwarf varieties remain relatively compact and are useful for borders, while larger varieties can become substantial shrubs suitable for hedges and foundation plantings.
When selecting a boxwood, consider its mature size rather than its size at the nursery.
Give plants enough room to develop without immediately crowding neighboring shrubs.
Overcrowding can reduce airflow and create conditions that favor disease development.
Foliage
Boxwoods are prized for their dense evergreen foliage.
The small leaves are generally shades of medium to dark green, although certain cultivars may have slightly different foliage characteristics.
Their evergreen nature makes them useful for maintaining structure throughout the year.
Boxwoods can provide:
Year-round greenery
Formal borders
Low hedges
Foundation planting
Garden structure
Defined pathways
Privacy or screening when larger varieties are used
Flowers
Boxwoods are primarily grown for their foliage, but they can produce small, inconspicuous flowers in spring.
The flowers aren't usually the main reason homeowners select boxwoods, but they can attract pollinators because they produce nectar and pollen.
For most landscape designs, the primary appeal remains the plant's evergreen foliage and dense branching.
Growth Rate
Growth rate varies depending on the boxwood variety, environmental conditions, and maintenance.
Some boxwoods grow relatively slowly, while others can establish and fill out more quickly.
Growth can be affected by:
Sunlight
Water availability
Soil quality
Fertilization
Temperature
Pruning
Plant health
Don't assume that a slow-growing boxwood needs excessive fertilizer. Healthy root development and appropriate growing conditions are more important for long-term performance.
Popular Boxwood Types
Several types of boxwoods can be found in Louisiana landscapes.
Japanese Boxwood
Japanese boxwoods are commonly used in Southern landscapes and can work well for hedges, borders, and foundation plantings.
They are valued for their dense growth and relatively small leaves.
Korean Boxwood
Korean boxwoods are another option for formal landscapes and low hedges.
Their compact growth can work particularly well in structured planting beds.
Common Boxwood
Common boxwood (Buxus sempervirens) is associated with traditional formal gardens and can be used for hedges and shaped landscape features.
Littleleaf Boxwood
Littleleaf boxwoods are popular for their small foliage and compact appearance.
They can be particularly attractive when used to create clean, defined borders.
Baby Gem Boxwood
Baby Gem is a compact boxwood often used in foundation plantings, borders, and formal garden designs.
However, homeowners should be aware that LSU AgCenter identifies Baby Gem among the boxwoods that can be susceptible to boxwood dieback in Louisiana.
Pruning Boxwoods
One of the biggest advantages of boxwoods is their ability to tolerate shaping.
They can be maintained as:
Rounded shrubs
Low borders
Formal hedges
Geometric shapes
Foundation shrubs
Regular pruning can help maintain the desired size and shape.
However, avoid excessive or unnecessary pruning. Overly aggressive shearing can create dense outer growth while reducing airflow within the plant.
When pruning boxwoods, use clean, sharp equipment.
This is especially important in Louisiana because boxwood diseases can spread through contaminated pruning equipment. LSU AgCenter recommends disinfecting pruning tools as part of disease-prevention practices.
Fertilizing Boxwoods
Boxwoods generally benefit from appropriate, balanced nutrition rather than excessive fertilizer.
A soil test can help determine whether nutrients are actually needed before applying fertilizer.
Overfertilization should be avoided, particularly because LSU AgCenter identifies excessive fertilization as one of the landscape practices that can contribute to conditions favorable for root and crown rot.
Healthy soil, proper irrigation, adequate spacing, and appropriate planting depth are all important parts of maintaining healthy boxwoods.
Common Boxwood Problems
Boxwoods are relatively tough landscape shrubs, but they are susceptible to several pests and diseases.
Boxwood Dieback
Boxwood dieback is an important concern for Louisiana landscapes.
The disease is caused by the fungal pathogen Colletotrichum theobromicola. Symptoms can include random twig and branch dieback and light tan foliage that remains attached to affected branches.
LSU AgCenter reports that English, Japanese, Korean, and Baby Gem boxwoods are particularly susceptible.
Because symptoms can resemble other boxwood diseases, professional diagnosis can be important before deciding how to manage an affected plant.
LSU AgCenter's current guidance notes that confirmed boxwood dieback should not simply be managed by cutting out individual dead sections because the disease can be systemic.
Root and Crown Rot
Phytophthora root and crown rot is another significant concern.
Symptoms can include:
Yellowing or browning foliage
Declining growth
Branch dieback
Overall thinning
Plant death in severe cases
Poor drainage, excessive irrigation, deep planting, compacted soil, overcrowding, and excessive mulch can contribute to conditions that favor the disease.
Proper planting and drainage are therefore particularly important for boxwoods in South Louisiana.
Leaf Spot and Stem Blight
LSU AgCenter's Louisiana Plant Disease Management Guide lists several diseases affecting boxwood, including leaf spot, canker, dieback, root and crown rot, and stem blight.
If a boxwood develops unexplained brown, tan, or declining foliage, avoid immediately assuming it is simply heat stress.
Different diseases can produce similar symptoms, so accurate diagnosis can help determine the appropriate response.
Spider Mites and Other Pests
Boxwoods can also experience insect and mite problems.
Spider mites, for example, can cause stippling that makes foliage appear faded, dusty, or unhealthy.
Regularly inspecting plants can help identify problems before they become severe.
How to Prevent Boxwood Problems
Good landscape practices can go a long way toward maintaining healthier boxwoods.
Provide Adequate Spacing
Avoid planting boxwoods so close together that mature plants become crowded.
Adequate spacing improves airflow and makes it easier to inspect plants.
Don't Overwater
South Louisiana receives substantial rainfall, so irrigation schedules should account for natural precipitation.
An automatic irrigation system shouldn't continue watering on a fixed schedule when the landscape has already received significant rainfall.
Improve Drainage
If water consistently pools around boxwoods, investigate the drainage issue.
Poor drainage can create long-term root problems.
Avoid Deep Planting
Plant boxwoods at the appropriate depth and avoid burying the root flare.
Deep planting can contribute to root and crown problems.
Keep Mulch Under Control
Mulch can be useful for conserving moisture and moderating soil temperatures, but excessive mulch around the base of shrubs can contribute to moisture-related problems.
Keep mulch from being piled directly against the stems.
Keep Pruning Equipment Clean
Because some boxwood diseases can spread through pruning equipment, disinfect tools between plants when disease is suspected or present.
This is especially important when maintaining multiple boxwoods in the same landscape.
Using Boxwoods in South Louisiana Landscapes
Boxwoods are particularly useful when a landscape calls for clean lines and year-round structure.
Foundation Plantings
Boxwoods can frame the front of a home and provide consistent greenery throughout the year.
Walkway Borders
Low boxwood hedges can define sidewalks, garden paths, and entryways.
Formal Garden Designs
Their ability to be shaped makes boxwoods a natural fit for formal landscapes.
Outdoor Living Areas
Boxwoods can help define patios, outdoor kitchens, fire pit areas, and other outdoor living spaces without creating an overly tall visual barrier.
Mixed Planting Beds
Boxwoods can also serve as evergreen anchors within beds containing flowering shrubs, perennials, and ornamental grasses.
Boxwoods and South Louisiana Heat
South Louisiana's summer conditions can be demanding on landscape plants.
High temperatures, humidity, heavy rainfall, and periods of drought can all affect plant health.
For boxwoods, the goal isn't simply to provide more water. Instead, focus on maintaining consistent moisture without keeping the root zone saturated.
A well-designed planting bed with appropriate drainage and irrigation can make a significant difference.
When to Plant Boxwoods
Boxwoods can be planted during suitable portions of the growing season, provided the plants can be properly watered and established.
Avoid planting when the soil is excessively wet or during periods of extreme environmental stress.
Fall and cooler portions of the growing season can provide favorable establishment conditions in South Louisiana because temperatures are generally more moderate than during the peak of summer.
Regardless of planting time, newly installed boxwoods should be monitored closely for moisture during establishment.
Companion Plants for Boxwoods
Boxwoods work well with many plants commonly used in Southern landscapes.
Consider pairing them with:
Camellias
Azaleas
Gardenias
Loropetalum
Liriope
Holly ferns
Hydrangeas
Ornamental grasses
Drift roses
Magnolia trees
Combining boxwoods with plants of different heights, textures, and bloom periods can create a more layered landscape.
Is Boxwood Right for Your South Louisiana Landscape?
Boxwoods can be a beautiful choice for homeowners who want evergreen structure, formal lines, and a classic landscape appearance.
They are especially useful for:
Foundation plantings
Formal hedges
Walkway borders
Garden borders
Outdoor living spaces
Entryways
Structured planting beds
However, South Louisiana homeowners should pay close attention to drainage, spacing, irrigation, and disease prevention.
Boxwoods have historically been considered reliable landscape shrubs, but LSU AgCenter's recent guidance emphasizes that disease problems have become an important consideration for Louisiana landscapes.
Selecting healthy plants and installing them correctly can help give your landscape the best possible start.
Add Boxwoods to Your South Louisiana Landscape
Boxwoods can bring structure, greenery, and a polished appearance to residential landscapes. Whether you're looking for a formal hedge, a clean walkway border, or evergreen foundation plants, they can be incorporated into a wide range of landscape designs.
Emerald Landscapes can help with plant selection, landscape design, planting, bed installation, and ongoing landscape maintenance throughout South Louisiana.
If you're planning a new landscape or want to refresh an existing planting bed, contact Emerald Landscapes to discuss your project.
