Outdoor Long Planter Boxes Everything You Need to Know


If you love gardening but are lacking space to do so, then outdoor long planter boxes are here for you. Planter boxes particularly the long planter boxes are an ideal way of container gardening in small urban spaces as a balcony, rooftop deck or a patio. They work wonderfully alone as well as when combined with L-shaped planters to enclose an area with beautiful plants, vegetables or fragrant herbs.

Traditionally long planter boxes that are used in outdoor gardening are loved for their versatility and functionality and are used in everything from backyard landscaping to adorn windowsills.

Although planter boxes come in a variety of shapes and size the long planter boxes are one of the most common ones due to their ability to fit in perfectly in the long-elongated spaces. Long planters come in a variety of different materials like plastic, fiber, concrete, but the popular material to be used still remains to be wood.

How to use it?

Long planter boxes are a common sight on windowsills and backyard deck railings these days. Apart from these long planter boxes are also an ideal choice for tight long, oddly shaped and elongated spaces that cannot be covered by bulky round planter boxes.

Use the long planter boxes in small courtyards and patios or simply line them up along a walkway, create a border along with your property or use them as dividers to divide smaller more intimate spaces from larger ones.

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Types of Long Planter Boxes

Long Planter Boxes

There is a myriad of choices available in the types of Long planter boxes. You can choose a classy and elegant look for your space with cedar, teak, acacia, mahogany, Australian blackwood and cherry wood built long planter boxes, or stick to more affordable and low-maintenance options of plastic or clay planters that can be made to look similar to wood with paint and staining. Long planter boxes are also available in terracotta and stone, but the stone is in less used for a heavyweight.

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What can you plant in your outdoor long planter boxes?

You can plant a variety of plants in your long planter boxes as long as you remember to put only those plants together in one planter that requires the same amount of water and exposure to the sun and have similar soil needs. Perennials, bulbs, vines, annuals, vegetables and herbs do great in long planter boxes.

For planter boxes that get partial shade, plantlike sweet alyssum, anchusa, trailing ivy geraniums, celosia verbena and petunias are ideal. Plants like Vinca, poppies, nasturtium, ageratum and portulaca do great in long planter boxes that receive enough sunlight.  Long planter boxes are also ideal for growing herbs year round.

Choosing the Right Plants for Outdoor Long Planter Boxes

When selecting plants for your outdoor long planter boxes, it’s essential to consider factors such as sunlight exposure, soil conditions, and climate.

Additionally, you’ll want to choose plants that complement each other in terms of height, color, and growth habit to create a harmonious and visually appealing arrangement. Here are some special types of plants that thrive in outdoor long planter boxes:

  1. Cascading Vines: Cascading vines are perfect for adding vertical interest and softening the edges of outdoor long planter boxes. Trailing plants such as ivy, vinca vine, and creeping Jenny create a lush and verdant backdrop, cascading gracefully over the sides of the planter boxes. These plants thrive in partial to full sunlight and require regular watering to maintain their vibrant foliage.
  2. Colorful Annual Flowers: Annual flowers add a pop of color and seasonal interest to outdoor long planter boxes. Choose a mix of annuals such as petunias, marigolds, impatiens, and geraniums to create a vibrant and eye-catching display. These plants come in a wide range of colors and bloom profusely throughout the growing season, attracting pollinators and creating a cheerful atmosphere in your outdoor space.
  3. Ornamental Grasses: Ornamental grasses are prized for their graceful foliage and architectural appeal, making them excellent choices for outdoor long planter boxes. Grasses such as fountain grass, maiden grass, and sedge add texture, movement, and visual interest to garden beds, creating a dynamic and naturalistic look. These low-maintenance plants thrive in full sunlight and well-drained soil, requiring minimal care once established.
  4. Fragrant Herbs: Fragrant herbs not only add culinary value to your outdoor space but also delight the senses with their aromatic foliage and flowers. Plant herbs such as rosemary, lavender, thyme, and mint in your long planter boxes to enjoy their delightful scents and culinary versatility. These herbs thrive in sunny locations and well-drained soil, making them ideal companions for other sun-loving plants in your garden.
  5. Succulents and Cacti: Succulents and cacti are drought-tolerant plants that thrive in outdoor long planter boxes with ample sunlight and excellent drainage. These low-maintenance plants come in a wide range of shapes, sizes, and colors, offering endless possibilities for creative plantings. Arrange succulents such as echeveria, sedum, and aeonium in your planter boxes to create stunning desert-inspired displays that require minimal watering and care.
  6. Climbing Plants: Climbing plants add vertical interest and create a lush green backdrop in outdoor long planter boxes. Train climbers such as climbing roses, jasmine, or clematis to grow up trellises or support structures attached to your planter boxes. These plants not only provide visual interest but also attract pollinators and create a sense of privacy and enclosure in your outdoor space.

Maintenance Tips for Outdoor Long Planter Boxes

To ensure the health and vitality of your plants, it’s essential to provide them with proper care and maintenance throughout the growing season. Here are some tips to keep your outdoor long planter boxes looking their best:

  1. Watering: Monitor the moisture levels in your planter boxes and water your plants regularly, especially during hot and dry periods. Use a watering can or hose with a gentle spray nozzle to water your plants thoroughly, ensuring that the soil is evenly moist but not waterlogged.
  2. Fertilizing: Feed your plants with a balanced fertilizer formulated for container gardening to promote healthy growth and flowering. Follow the manufacturer’s recommendations for application rates and frequency, and avoid over-fertilizing, which can lead to nutrient imbalances and plant stress.
  3. Pruning and Deadheading: Regularly prune and deadhead your plants to remove spent flowers, yellowing leaves, and leggy growth. This encourages new growth, prolongs the flowering period, and keeps your planter boxes looking neat and tidy.
  4. Pest and Disease Control: Keep an eye out for pests such as aphids, mealybugs, and spider mites, as well as common plant diseases such as powdery mildew and leaf spot. Promptly remove any affected plant parts and treat infestations with organic pest control methods or insecticidal soap as needed.
  5. Mulching: Apply a layer of organic mulch such as shredded bark or compost to the surface of the soil in your planter boxes to help retain moisture, suppress weeds, and regulate soil temperature. Mulching also adds nutrients to the soil as it breaks down over time, improving overall plant health and vitality.

Some Tips for Your Long Planter Boxes

  • Always make sure that you line your long planter boxes with plastic sheeting with holes.
  • For adequate drainage, top the plastic sheeted planter with a thin layer of gravel first, followed by good quality potting soil.
  • Keep your planter fertilized with pallets that are time-release or small amounts of soluble fertilizer.
  • Water your plants then, with fertilizer with a nutrient ratio of 1-2-1.
  • To avoid over-watering of your planter, remember long planter boxes have the ability to retain more moisture as they have more soil volume in the lower half of the container, so wait until the potting mix has dried out until the top 3 inches.
  • Protect wooden planter boxes from molds by ensuring adequate drainage and regular light sanding.
  • Protect your stone planters from cracks by protecting them from cold weather and keeping them dry with plastic.


Long planter boxes are traditional forms of planters that are still in use in outdoors of the houses for better planting and gardening in large open spaces. You can also check gardening tips at this article from I Love Lawn Care.

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