Best Large Window Boxes of 2025

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Large window boxes are a practical and stylish addition to any home or garden. These boxes come in various materials such as wood, metal or plastic and can be used to grow a variety of plants, flowers or herbs. They are perfect for those who have limited outdoor space or want to add some greenery to their windowsills. With the right soil and plant selection, these boxes can thrive even in urban environments. Additionally, they can serve as a decorative element to enhance the overall aesthetic of your home.
At a Glance: Our Top Picks
Top 10 Large Window Boxes
RUDDINGS WOOD Large Metal Window Boxes
The RUDDINGS WOOD Window Boxes are perfect for enhancing your outdoor space. Made from heavy-duty solid steel, these sturdy flower troughs are designed to withstand the elements. Their stylish front twisted bars add an attractive decorative touch, making them ideal for hanging under windows or on garden walls. With two hanging hooks included, you can easily fit them to walls or garden fences. Plus, the black powder coating protects against rust and discolouration, ensuring they remain looking good for years to come.
RUDDINGS WOOD 48" Fleur de Lys Wall Planter
The RUDDINGS WOOD Wall Planter is a large 120cm (48") wide trough made from durable steel with a PVC coating, ensuring it can withstand various weather conditions. It comes with a quality coco liner, allowing you to easily plant and maintain your favourite flowers or herbs. The ornate Fleur-de-lys design adds an elegant touch to your garden or window. With its generous size, you can create a stunning display that enhances your outdoor space and brings joy to your gardening experience.
RUDDINGS WOOD 48" Large Outdoor Window Box
The RUDDINGS WOOD Window Box is a 48" (121cm) large garden planter that features a quality coco liner. This liner, made from natural coconut fibres, helps retain moisture after watering, ensuring your plants thrive. Constructed from heavy gauge flat steel with a black powder coating, it resists rusting and protects against various weather conditions. Additionally, it includes two fixing slots on the back for easy installation, allowing you to effortlessly enhance your outdoor space.
RUDDINGS WOOD Large Metal Window Boxes
The RUDDINGS WOOD Window Boxes are a stylish solution for your outdoor planting needs. Each box measures 91cm wide, providing ample space for your flowers and plants. The heavy gauge steel construction with black powder coating ensures durability against rust and harsh weather, making them perfect for any garden setting. Included coco liners, made from natural coconut fibres, help retain moisture, so you can enjoy thriving plants with less frequent watering. Additionally, the two slots for easy fitting make installation a breeze, allowing you to beautify your space effortlessly.
CASARIA Large Rattan Flower Pot Planter
The CASARIA Rattan Flower Planter is an elegant addition to your outdoor space. With its hand-woven polyrattan design, it complements various styles and types of plants beautifully. The robust polyrattan material ensures durability against weather elements, making it easy to maintain. Additionally, the removable inner pots come with resealable water drains to prevent waterlogging, helping your plants thrive. Furthermore, adjustable feet allow you to level the planter easily, ensuring it fits perfectly in any area.
Home & Garden Designs Extra Large Wooden Planters
The Home & Garden Designs Planters are handmade from sustainably sourced wood, ensuring durability and strength. Measuring 150cm long, they are perfect for creating vibrant displays of flowers, shrubs, or even herbs and vegetables in your garden. With drainage holes drilled as standard, you can be assured that your plants will thrive without waterlogging. These planters are ideal not only for personal use but also for commercial settings like hotels and restaurants, making them a versatile choice for any outdoor space.
Home & Garden Designs Extra Large Wooden Planters
The Home & Garden Designs Planters are expertly handmade using sustainably sourced wood, ensuring a durable addition to your outdoor space. With dimensions of 165cm long, 20cm wide, and 15cm high, these planters are perfect for growing flowers, shrubs, herbs, and vegetables. They come pre-fitted with drainage holes, allowing for efficient water management, which is essential for plant health. Additionally, these versatile planters are suitable for both home use and commercial settings such as hotels, restaurants, and cafes.
LaLaGreen Self-Watering Planter Box Set
The LaLaGreen Planter Box offers a practical 2-pack set of 16-inch black window planter boxes, perfect for your indoor plants. Its self-watering system ensures your plants receive the right amount of moisture, making it ideal for busy individuals. Installation is a breeze, as it comes without hardware, allowing for versatile use in various settings. With a classic and minimalist design, these planters beautifully complement any decor while accommodating herbs, flowers, and small plants, enhancing your home or office space.
Set of 4 Large Wooden Garden Planters
The Wooden Garden Planters are a value set of four handmade planters crafted from sustainably produced wood. Each planter measures 80cm long, 20cm wide, and 15cm high, making them ideal for various plants. They feature a Forest Green paint finish, with two coats of high-quality exterior-grade wood paint that protects against rot, insects, and fungi. Additionally, with drainage holes drilled as standard, you can ensure your plants thrive with proper water management, allowing you to enjoy a lush garden with ease.
Home & Garden Designs Large Wooden Planters
The Home & Garden Wooden Planters are handmade from sustainably produced wood, ensuring a robust and long-lasting product for your gardening needs. With dimensions of 100cm long, they offer ample space for flowers, shrubs, or even herbs and vegetables. The inclusion of drainage holes as standard means you can keep your plants healthy by preventing waterlogging. These planters are perfect for various settings, from home gardens to commercial spaces like cafes and hotels, allowing you to enhance your outdoor aesthetic effortlessly.
Frequently Asked Questions (FAQs)
1. What sizes do window boxes come in?
Since many windows are around three feet long, almost every window box style is available in 30″ and 36″ lengths. When placing a window box on a deck or porch railing, it should fill the space without making the railing unusable.
2. Should a window box be wider than the window?
For the best visual effect, your window box should be at least as wide as the window but should not extend more than three inches beyond the trim on each side.
3. What is the best depth for a window box?
A minimum of 8 inches in depth and 8 inches from front to back is required to have enough room for a selection of plants. Larger–say a foot in depth and width–is even better, particularly if you want to include a lot of plants and want them to fill out enough to overflow the box.
During our large window boxes research, we found 72 large window boxes products and shortlisted 10 quality products. We collected and analyzed 10,240 customer reviews through our big data system to write the large window boxes list. We found that most customers choose large window boxes with an average price of £47.23.
The large window boxes are available for purchase. We have researched hundreds of brands and picked the top brands of large window boxes, including RUDDINGS WOOD, CASARIA, Home & Garden Designs. The seller of top 1 product has received honest feedback from 550 consumers with an average rating of 4.8.

Toby Butcher is a Horticulturist, and he earned his title as a Master Gardener in 2016. Toby has acquired a 25-year experience as a home gardener planting, designing, grooming vegetables and flowers. He is the leader of a plant group in Durham. Toby owns a blog where he publishes articles on growing and growing your flowers at home, in a vase, or in a garden.