A purple leaf tree can serve as a stunning focal point in any landscape design. If you want to add dramatic color and year-round interest to your garden, few choices are as impactful as a tree with rich purple foliage.
These trees offer more than just beauty. They provide structure and can even create shade with a uniquely colored canopy. This guide will help you choose, plant, and care for the perfect purple leaf tree for your space.
You will learn about popular varieties, their growing needs, and how to use them effectively in your yard.
Purple Leaf Tree
Purple leaf trees are not a single species. Instead, they are cultivated varieties of many common trees, selected for their unique leaf color. This color comes from pigments called anthocyanins.
These pigments are present in the leaves throughout the growing season, masking the traditional green chlorophyll. The intensity of the purple can vary with sunlight, season, and the tree’s overall health.
From small ornamental specimens to larger shade trees, there is a purple leaf tree suitable for almost any garden size and style.
Popular Varieties Of Purple Foliage Trees
Many beautiful trees feature purple leaves. Your choice will depend on your climate, available space, and the desired effect. Here are some of the most popular and reliable options.
Purple Leaf Plum (Prunus cerasifera)
This is one of the most common purple leaf trees. It is known for its early spring bloom and reddish-purple foliage. It’s a excellent choice for smaller gardens.
- Mature Size: 15-25 feet tall and wide.
- Key Features: Pale pink or white flowers in early spring before the leaves emerge. The leaves maintain a deep purple color all summer.
- Best For: Accent planting, small yards, and street trees where space is limited.
Japanese Maple (Acer palmatum)
Many Japanese maple cultivars boast stunning purple or red-purple leaves. They are prized for their elegant, lacy foliage and graceful form.
- Mature Size: Varies widely; dwarf forms stay under 6 feet, while standard types can reach 15-25 feet.
- Key Features: Delicate, often dissected leaves with brilliant fall color. Forms range from weeping to upright.
- Best For: Focal points, container gardening, Japanese-style gardens, and shaded patios.
Copper Beech (Fagus sylvatica ‘Purpurea’)
This is a large, majestic tree with deep purple foliage that turns a coppery-bronze in fall. It is a statement tree for substantial properties.
- Mature Size: 50-60 feet tall and 35-45 feet wide.
- Key Features: Smooth gray bark and dense foliage that provides deep shade. The leaves hold their color well into the season.
- Best For: Large lawns, parks, and estates where it has ample room to grow.
Purple Smoke Tree (Cotinus coggygria ‘Royal Purple’)
Known for its unique, airy flower plumes that look like puffs of smoke, this tree-shrub also has rich purple-burgundy leaves.
- Mature Size: 10-15 feet tall and wide.
- Key Features: Rounded leaves and billowy pinkish-purple flower clusters in summer. Fall color is a brilliant scarlet.
- Best For: Mixed shrub borders, as a large accent plant, or for creating a colorful backdrop.
Forest Pansy Redbud (Cercis canadensis ‘Forest Pansy’)
A native North American tree, ‘Forest Pansy’ offers heart-shaped leaves that emerge a shiny purple and mature to a bronzy green-purple.
- Mature Size: 20-30 feet tall and 25-35 feet wide.
- Key Features: Beautiful lavender-pink flowers directly on the branches in early spring. Attractive horizontal branching pattern.
- Best For: Naturalized landscapes, woodland edges, and as a medium-sized yard tree.
How To Choose The Right Purple Leaf Tree
Selecting the right tree involves more than just picking the prettiest one. You need to consider how it will fit and thrive in your specific garden conditions.
Assess Your Climate and Hardiness Zone
The first step is to know your USDA Plant Hardiness Zone. This determines which trees will survive your winter temperatures.
- Check the zone rating for any tree you consider. A purple leaf plum (Zone 4-9) won’t survive in a very cold Zone 3 winter.
- Also consider summer heat and humidity. Some Japanese maples, for instance, struggle in intense, dry heat.
Evaluate Your Available Space
Always consider the tree’s mature height and spread. A common landscaping mistake is planting a tree that will outgrow its space.
- Measure the planting area width and height clearance from power lines or structures.
- Look at the mature spread listed for the tree. Ensure it has room to grow without constant pruning.
- Consider the root system. Large trees should not be planted too close to foundations, driveways, or septic systems.
Consider Sunlight Requirements
Sunlight is crucial for maintaining leaf color. Most purple leaf trees need full sun to develop their richest, deepest color.
“Full sun” typically means at least six hours of direct sunlight per day. In too much shade, purple leaves may fade to a dull greenish-bronze. Some varieties, like certain Japanese maples, prefer afternoon shade in hot climates to prevent leaf scorch.
Soil Type and Drainage
Soil condition is a critical factor for tree health. Most trees prefer well-drained soil.
- Perform a simple drainage test: Dig a hole about 12 inches deep and fill it with water. If it drains within a few hours, drainage is good.
- Purple leaf plums and smoke trees are quite adaptable to different soil types.
- Japanese maples and copper beeches prefer consistently moist, well-drained, and slightly acidic soil.
Planting Your Purple Leaf Tree
Proper planting gives your tree the best start for a long and healthy life. The process is straightforward if you follow these key steps.
Best Time To Plant
The ideal time to plant most trees is during dormancy, either in early spring after the ground thaws or in early fall. This allows the tree to establish roots without the stress of supporting full leaf growth during summer heat.
Container-grown trees can be planted almost any time the ground is workable, but you must be diligent about watering if planting in summer.
Step-by-Step Planting Guide
Follow these steps to ensure your tree is planted correctly.
- Dig the Hole: Dig a hole two to three times wider than the tree’s root ball. The depth should be such that the root flare (where the trunk widens at the base) sits slightly above the surrounding soil level.
- Prepare the Root Ball: Gently remove the tree from its container. Loosen any circling roots with your fingers or a hand tool. For balled-and-burlapped trees, remove any wire or synthetic burlap after placing it in the hole.
- Position the Tree: Place the tree in the center of the hole. Use a shovel handle laid across the hole to check that the root flare is at or slightly above grade.
- Backfill the Hole: Use the native soil you removed to backfill the hole. Gently tamp it down as you go to remove large air pockets. Avoid amending the soil with compost in the hole, as this can discourage roots from expanding into the native soil.
- Water Thoroughly: Create a shallow berm of soil around the planting hole to form a water basin. Fill this basin with water to settle the soil. Add more soil if significant settling occurs.
- Apply Mulch: Spread 2-3 inches of organic mulch, like wood chips, around the tree in a wide circle. Keep the mulch a few inches away from the trunk itself to prevent rot.
Initial Care After Planting
The first year is critical for establishment. Your main task is consistent watering. Water deeply once or twice a week, depending on rainfall and temperature, to encourage deep root growth. Do not rely on light, frequent sprinklings.
Do not fertilize at planting time. Wait until the following spring to apply a slow-release, balanced fertilizer if a soil test indicates a need.
Caring For Your Purple Leaf Tree
Ongoing maintenance is simple but important for keeping your tree vibrant and healthy for decades.
Watering And Fertilizing
Established trees are relatively drought-tolerant, but they benefit from deep watering during prolonged dry spells. A general rule is to provide about an inch of water per week, either from rain or irrigation.
Fertilize in early spring before new growth begins. Use a balanced, slow-release fertilizer formulated for trees and shrubs. Always follow the label instructions to avoid over-fertilizing, which can harm the tree and reduce leaf color intensity.
Pruning And Shaping
Pruning is essential for health, shape, and air circulation. The best time to prune most purple leaf trees is in late winter or early spring while they are still dormant.
- Remove dead, diseased, or damaged branches first.
- Thin out crossing or rubbing branches to prevent wounds.
- For shaping, make selective cuts to maintain the tree’s natural form. Avoid heavy topping, which ruins the structure and invites disease.
- With Japanese maples, minimal pruning is often best. Simply remove any unwanted or problematic branches.
Common Pests And Diseases
While generally resilient, purple leaf trees can be susceptible to some issues. Early identification is key.
Aphids and Borers
Aphids are small, sap-sucking insects that can cause leaf curling and secrete a sticky substance called honeydew. They are often controlled by natural predators like ladybugs, or can be sprayed off with a strong stream of water.
Borers are insect larvae that tunnel into trunks and branches. Look for small holes and sawdust-like frass. Keeping your tree healthy and unstressed is the best prevention. Infested branches should be pruned out and destroyed.
Fungal Diseases: Powdery Mildew and Leaf Spot
Powdery mildew appears as a white, powdery coating on leaves. It is common in humid conditions with poor air circulation. To manage it, ensure proper spacing and prune for good airflow. Fungicidal sprays are available for severe cases.
Leaf spot diseases cause dark spots or blotches on foliage. Rake and dispose of fallen leaves in autumn to reduce spores overwintering. Fungicides can be used as a preventative measure if the problem is chronic.
Design Ideas Using Purple Leaf Trees
A purple leaf tree is a powerful design element. Here’s how to use it effectively in your landscape.
As A Focal Point Or Specimen
Plant a single, striking tree where it can be admired from a window or patio. A weeping Japanese maple or a multi-trunked smoke tree makes an exceptional standalone specimen. Surround it with a clean mulch bed to highlight its form and color.
Creating Color Contrast
Purple foliage pairs beautifully with plants that have silver, gold, or bright green leaves.
- Pair a purple leaf plum with plants like blue fescue grass or silver mound artemisia.
- Underplant a copper beech with golden hostas or chartreuse creeping jenny.
- Combine a ‘Forest Pansy’ redbud with yellow-flowered perennials like coreopsis.
In Mixed Borders And Screens
Use smaller purple leaf trees as the backbone of a mixed shrub border. The consistent color can tie together various flowering plants. Larger, dense varieties like the copper beech can be planted in a row to create a stunning, private purple screen or windbreak.
Seasonal Considerations
The beauty of a purple leaf tree changes with the seasons, offering year-round interest.
Spring And Summer Color
In spring, many varieties offer a double show: flowers followed by the emergence of fresh purple foliage. The color is typically most vibrant in new growth. Through the summer, the leaves provide a cool, dark backdrop for other blooming plants in your garden.
Fall Foliage And Winter Interest
Autumn brings another color transformation. Many purple trees turn to brilliant shades of red, orange, or yellow. The ‘Forest Pansy’ redbud, for example, can turn a bright yellow. In winter, the tree’s structure, bark texture, and any persistent seed pods or fruit become the main attraction. The graceful silhouette of a Japanese maple is especially valuable in the winter garden.
Frequently Asked Questions
Why Is My Purple Leaf Tree Turning Green?
This is a common concern. The most likely cause is insufficient sunlight. Purple leaf trees need full sun to produce the anthocyanin pigments. If planted in too much shade, they will revert to producing more green chlorophyll. Other causes can include over-fertilization with high-nitrogen fertilizer or the tree simply being a grafted variety where green shoots (suckers) are growing from the rootstock below the graft union.
What Is The Fastest Growing Purple Leaf Tree?
The purple leaf plum (Prunus cerasifera) is generally considered one of the faster-growing purple trees, often adding 1-2 feet per year under ideal conditions. The ‘Forest Pansy’ redbud also has a moderately fast growth rate. Remember, faster growth can sometimes mean a slightly shorter lifespan or weaker wood.
Are Purple Leaf Trees Hard To Grow?
Not at all. Most popular purple leaf tree varieties are chosen for their reliability and adaptability. Once established, they require minimal care beyond occasional watering during droughts, annual pruning, and monitoring for pests. The key is selecting the right tree for your specific climate and site conditions from the start.
Can You Grow A Purple Leaf Tree In A Container?
Yes, several smaller varieties are excellent for container gardening. Dwarf Japanese maple cultivars are the top choice. Use a large, sturdy pot with excellent drainage and a high-quality potting mix. Container-grown trees need more frequent watering and feeding than those in the ground, and may need root pruning or repotting every few years.
How Long Do Purple Leaf Plum Trees Live?
The purple leaf plum has a relatively moderate lifespan for a tree, typically living 20 to 30 years. Some may live longer with optimal care and site conditions. Their shorter lifespan compared to oaks or beeches is offset by their rapid growth and quick impact in the landscape. Proper pruning and care can help maximize there health and longevity.