Imagine waking up every morning to the sight of lush, green plants right outside your window, no matter the season. Evergreen window box plants can make this dream a reality, offering year-round beauty and the added benefit of being low maintenance.
Whether you have outdoor or indoor window boxes, evergreens are a fantastic choice to keep your space looking fresh and vibrant. So, let's dive into the wonderful world of evergreen window box plants and discover the best options for your garden.
What Are Evergreen Window Box Plants?
Evergreen plants keep their foliage throughout the year, providing continuous greenery and aesthetic appeal.
They're perfect for window boxes because they offer consistent beauty and don't require as much upkeep as some other plants.
Plus, they can thrive in various conditions, making them a versatile choice for any gardener.

Benefits of Evergreen Window Box Plants
Before we get into the list, let's talk about why you might want to choose evergreen plants for your window boxes:
- Year-round beauty: Evergreen plants stay green all year, providing a constant source of beauty.
- Low maintenance: Many evergreen plants are hardy and don't require much care.
- Versatility: Evergreen plants come in many shapes and sizes, perfect for any window box.
- Environmental benefits: These plants can improve air quality and provide a habitat for wildlife.
Outdoor vs Indoor Window Boxes
When it comes to window boxes, one size does not fit all. The primary difference between outdoor and indoor window boxes lies in their exposure to the elements and their impact on plant choice and maintenance.
Outdoor Window Boxes

- Exposure: Outdoor window boxes are exposed to the weather, including rain, wind, and temperature fluctuations. This means they need to be sturdy and weather-resistant.
- Plant Choices: Plants in outdoor boxes must be hardy enough to withstand these conditions. They also benefit from natural sunlight and rain.
- Maintenance: Outdoor plants may require more regular watering and care due to their exposure to the elements, but they also get natural benefits like rainwater and pollinators.
Indoor Window Boxes
- Exposure: Indoor window boxes are sheltered from weather conditions but rely entirely on you for their care.
- Plant Choices: These boxes are ideal for houseplants and herbs that thrive in stable indoor conditions. They can be placed in various spots around the house, depending on the light requirements of the plants.
- Maintenance: Indoor plants might need more attention in terms of watering and light provision since they do not benefit from natural rain or sunlight directly.
Tips for Choosing the Right Type for Your Space
When selecting window boxes for your space, consider the following tips:
- Material: Choose weather-resistant materials like wood, metal, or plastic for outdoor boxes. For indoor boxes, aesthetics might play a more significant role, so consider materials like ceramic or decorative plastics.
- Drainage: Ensure your window box has adequate drainage to prevent waterlogging, which is crucial for both indoor and outdoor plants.
- Size: Match the size of the window box to the space available and the types of plants you want to grow. Larger boxes are suitable for bigger plants or a greater variety of plants, while smaller boxes work well for herbs or compact plants.
- Attachment: Secure outdoor window boxes properly to withstand wind and weather. Indoor boxes should be stable and placed in spots where they receive adequate light.
Installing Outdoor Window Boxes

Installing outdoor window boxes can be a straightforward project with the right tools and materials. Here’s a step-by-step guide to get you started:
Step 1: Measure and Mark
Measure the width of your window and mark where you want the window box to be installed. Make sure it’s centered and level.
Step 2: Choose the Right Brackets
Select sturdy brackets that can support the weight of the box, soil, and plants. Metal brackets are usually a good choice for their durability.
Step 3: Pre-Drill Holes
Pre-drill holes into the wall where the brackets will be attached. Use a level to ensure the brackets are even.
Step 4: Attach the Brackets
Secure the brackets to the wall using appropriate screws and anchors. Make sure they are tightly fastened to hold the weight of the loaded window box.
Step 5: Place the Window Box
Once the brackets are securely in place, place the window box on top of them. Double-check that it’s stable and level.
Step 6: Add a Liner
If your window box doesn’t have built-in drainage, add a liner with holes at the bottom to help manage water flow and protect the box material.
Step 7: Fill with Soil and Plants
Fill the box with a good-quality potting mix, leaving a few inches from the top. Plant your chosen evergreens, ensuring they have enough space to grow.
Recommended Materials and Tools
- Materials: Window box, brackets, screws, wall anchors, potting mix, plants, liner (if needed).
- Tools: Drill, level, measuring tape, screwdriver, pencil for marking.
Choosing the Right Size for Your Window Box
Selecting the correct size for your window box is crucial for the health and aesthetics of your plants. Here’s why:
- Plant Growth: Plants need adequate space for their roots to grow. A too-small box can restrict growth, while a too-large box can make watering and maintenance challenging.
- Aesthetics: The size of the window box should complement the window and overall architecture of your home. Proportionate window boxes enhance curb appeal.
- Stability: Larger boxes require more robust support to ensure they don’t fall or tilt, especially when filled with soil and plants.
It's now time to choose different sizes with their suitable plants. Let's go!
Small Window Boxes (18-24 inches)
- Suitable Plants: Herbs like thyme, oregano, and small flowering plants like pansies.
- Best For: Smaller windows or limited space.
Medium Window Boxes (24-36 inches)
- Suitable Plants: Medium-sized evergreens like dwarf boxwood, lavender, or a mix of trailing plants like ivy geranium.
- Best For: Standard-sized windows, offering a balance of space and plant variety.
Large Window Boxes (36-48 inches)
- Suitable Plants: Larger plants like compact holly, mugo pine, and a combination of cascading plants like sweet potato vine.
- Best For: Large windows or expansive walls, providing ample space for a diverse plant arrangement.
By carefully considering the type, installation, and size of your window boxes, you can create a beautiful and thriving green space that enhances your home’s appeal all year round.
How to Choose the Right Evergreen Plants for Your Window Box
When selecting evergreen plants for your window box, consider the following factors:
- Size: Ensure the plants fit well in your window box without overcrowding.
- Sunlight: Choose plants that match the sunlight conditions of your window box location.
- Climate: Pick plants that can thrive in your local climate.
- Watering needs: Select plants with similar watering requirements to make maintenance easier.
Top 15 plants for window boxes
It's time to discover the top 15 evergreen window box plants for year-round beauty. Perfect for outdoor and indoor spaces, these low-maintenance plants will transform your garden.
Dwarf Boxwood (Buxus sempervirens 'Suffruticosa')

Boxwood is a classic choice for window boxes, thanks to its dense, green foliage and compact size. Dwarf varieties like 'Suffruticosa' are perfect for small spaces and are easy to shape.
Why It’s Great
- Low maintenance: Requires minimal pruning and care.
- Versatile: Can be shaped into various forms.
- Hardy: Tolerates a wide range of conditions.
Miniature Juniper (Juniperus communis 'Compressa')

Miniature junipers are excellent for window boxes due to their upright, columnar growth and blue-green foliage. They're also very hardy and can withstand various conditions.
Why It’s Great
- Drought-tolerant: Can survive with minimal watering.
- Evergreen: Maintains its color all year round.
- Compact: Perfect for small spaces.
Compact Holly (Ilex crenata 'Compacta')

Compact holly is another great evergreen option for window boxes. Its small, dark green leaves and compact growth habit make it a beautiful addition to any space.
Why It’s Great
- Year-round color: Stays green all year.
- Berry production: Produces attractive berries in winter.
- Low maintenance: Requires little care once established.
Euonymus (Euonymus japonicus)

Euonymus is a versatile evergreen shrub that works well in window boxes. Its glossy, green leaves and bushy growth make it an attractive choice.
Why It’s Great
- Versatile: Suitable for various garden styles.
- Low maintenance: Requires minimal pruning.
- Hardy: Tolerates a range of conditions.
Heather (Calluna vulgaris)

Heather is known for its beautiful, needle-like foliage and delicate flowers. It's an excellent choice for adding color and texture to your window boxes.
Why It’s Great
- Colorful: Offers year-round interest with its foliage and flowers.
- Hardy: Can withstand harsh conditions.
- Compact: Fits well in small spaces.
Wintergreen (Gaultheria procumbens)

Wintergreen is a low-growing evergreen with glossy leaves and red berries. It's perfect for adding color and interest to your window boxes, especially in winter.
Why It’s Great
- Winter interest: Produces red berries in winter.
- Aromatic: Leaves have a pleasant scent when crushed.
- Low maintenance: Requires minimal care.
Mugo Pine (Pinus mugo)

Mugo pine is a dwarf evergreen with dense, green needles and a compact growth habit. It's ideal for adding a touch of evergreen beauty to your window boxes.
Why It’s Great
- Drought-tolerant: Can survive with minimal watering.
- Hardy: Tolerates a range of conditions.
- Compact: Perfect for small spaces.
Lavender (Lavandula angustifolia)

Lavender is not only beautiful but also aromatic, making it a wonderful addition to window boxes. Its silvery-green foliage and purple flowers provide year-round interest.
Why It’s Great
- Aromatic: Adds a pleasant scent to your garden.
- Drought-tolerant: Requires minimal watering.
- Evergreen: Stays green all year in mild climates.
Rosemary (Rosmarinus officinalis)

Rosemary is an aromatic evergreen herb that's perfect for window boxes. Its needle-like foliage and lovely fragrance make it a fantastic choice.
Why It’s Great
- Aromatic: Adds a pleasant scent to your garden.
- Drought-tolerant: Requires minimal watering.
- Evergreen: Stays green all year in mild climates.
Sedum (Sedum spp.)

Sedum, also known as stonecrop, is a drought-tolerant succulent that's perfect for window boxes. Its fleshy leaves and various colors add interest and texture.
Why It’s Great
- Drought-tolerant: Can survive with minimal watering.
- Variety: Comes in many shapes, sizes, and colors.
- Low maintenance: Requires minimal care.
Blue Fescue (Festuca glauca)

Source: Photo by Peggy A. Lopipero
Blue fescue is a compact, clumping grass with striking blue-green foliage. It's perfect for adding color and texture to your window boxes.
Why It’s Great
- Colorful: Adds blue-green color to your garden.
- Drought-tolerant: Requires minimal watering.
- Low maintenance: Needs little care once established.
Lantana (Lantana camara)

Lantana is a vibrant, flowering plant that's perfect for adding color to your window boxes. Its clusters of flowers come in various colors and attract pollinators.
Why It’s Great
- Colorful: Offers bright, cheerful flowers.
- Attracts pollinators: Bees and butterflies love it.
- Low maintenance: Requires minimal care.
Ivy Geranium (Pelargonium peltatum)

Ivy geraniums are trailing plants with beautiful, colorful flowers. They're perfect for adding a cascading effect to your window boxes.
Why It’s Great
- Cascading: Adds a trailing effect to your window boxes.
- Colorful: Offers bright, cheerful flowers.
- Low maintenance: Requires minimal care.
Sweet Potato Vine (Ipomoea batatas)

Source: Photo by H. Zell
Sweet potato vine is a fast-growing, trailing plant with vibrant foliage. It's perfect for adding a splash of color to your window boxes.
Why It’s Great
- Cascading: Adds a trailing effect to your window boxes.
- Colorful: Comes in various colors, from green to deep purple.
- Fast-growing: Quickly fills in your window boxes.
Trailing Lobelia (Lobelia erinus)

Trailing lobelia is a delicate, flowering plant with vibrant blue, purple, or white flowers. It's perfect for adding a touch of color to your window boxes.
Why It’s Great
- Cascading: Adds a trailing effect to your window boxes.
- Colorful: Offers bright, cheerful flowers.
- Low maintenance: Requires minimal care.
Final Thoughts...
Choosing evergreen window box plants can transform your windows into a year-round green oasis. Whether you're looking for low maintenance, drought-tolerant, or full sun options, there's an evergreen plant perfect for your window box.
So go ahead, pick your favorites, and enjoy the beauty and simplicity of evergreen gardening. Happy planting!
For more tips on window box gardening, check out Gardeners' World and Old farmers Almanac for expert advice and inspiration.