Vertical Gardening

Vertical gardening adds another dimension to your indoor or outdoor growing spaces. Whether you're concocting a vertical herb garden or a trellis, save space in your garden with a garden that grows up.

Vertical gardens—think vertical plant wall—are one of the hottest new garden trends and yet it's one of the oldest (have you ever grown a vine on a fence or trellis?). Vertical garden elements can draw attention to an area or disguise an unattractive view. This style of gardening is a perfect solution for just about any garden—indoors or out. Get started with our vertical gardening guide!

See more vertical gardening ideas.

Vertical Gardening Basics

In vertical gardening, use structures or columnar trees to create garden rooms or define hidden spaces ready for discovery. Trellises, attached to the ground or to large containers, allow you to grow vines, flowers, and even vegetables in a vertical garden using much less space than traditional gardening requires.

Vertical gardening with upright structures can be a boon for apartment dwellers, small-space urban gardeners, and disabled gardeners as well as for gardeners with large, traditional spaces.

Indoors, you can grow small-stature houseplants as vertical gardens by creating living walls for a tapestry of color and texture that helps filter out indoor air pollutants. In cold-winter climates, houseplants grown in vertical gardens add much-needed humidity in months when the furnace runs and dries the air out. Increasingly, hotels and office buildings are incorporating living walls and vertical gardens both inside and outside.

Although vertical gardens might need more frequent watering, they contribute to good air circulation.

Vertical Plant Wall

Green walls, another form of vertical gardens, are the latest fashion in gardening. Some are simply walls covered with climbing plants, while others involve a modular system that allows plants to grow inside the structures.

French botanist Patrick Blanc is credited as the father of the green wall movement. He produced his first project on the exterior of the Museum of Science and Industry in Paris in 1988. Dozens of his other works are now installed worldwide, indoors and out. Blanc refers to his projects as living paintings or vegetal walls.

Creating a vertical plant wall or garden using Blanc's methods requires metal framing, a sheet of rigid plastic, and felt. The frame of the vertical plant wall can be hung on a wall or it can stand alone. The rigid plastic, attached to the frame, makes the wall waterproof. The plants' roots grow in the felt, which evenly distributes water and fertilizer. Plant selection depends on the light and other growing conditions.

Some plant wall systems include spaces for soilless potting medium so other types of plants can be grown, plus irrigation systems. Besides watering and fertilizing, vertical plant walls require other maintenance, including pruning, dusting, weeding, and, sometimes, plant replacement. Vertical plant walls or gardens are heavy, so check with a structural expert to make sure your wall can handle the load.

See our favorite Pinterest-inspired vertical gardens.

Vertical Gardening Considerations

Take these elements into account when gardening vertically outdoors:

  • Anchor your vertical gardening structure in place before planting to allow you to avoid disturbing the roots or stems of plants. Pair heavy or more demanding plants with sturdier structures.
  • Tall plants or structures cast shadows on the vertical garden that will affect the growing patterns of nearby plants.
  • Plants grow differently on a vertical garden. Some, such as climbing roses, need to be physically attached to structures, while others, such as morning glories, are twining and will loop themselves around trellis openings.
  • Plants grown in a vertical garden might need more frequent watering and fertilizing because they're exposed to more light and wind.

Vertical Garden Plants

A wide variety of vertical garden plants are used on a vertical plant wall or garden, with plant selection determined by the light conditions.

For traditional vertical planting, consider these selections:

Annual flowering vines that climb without becoming too heavy include black-eyed Susan vine (Thunbergia alata), cardinal climber (Ipomoea x multifida), cypress vine (Ipomoea quamoclit), moonflower (Ipomoea alba), scarlet runner bean (Phaseolus coccineus), and hyacinth bean (Dolichos lablab). All grow best in full sun.

Easily grown perennial vines for vertical gardens include clematis hybrids, American bittersweet (Celastrus scandens), and ivy (Hedera selections). All grow best in full sun; clematis prefer to have their flowers in sun and their roots in shade.

Try these DIY vertical garden ideas for herbs.

Vines for shade vertical gardening include hardy kiwi (Actinidia kolomikta), chocolate vine (Akebia quinata), Dutchman's pipe (Aristolochia macrophylla), and climbing hydrangea (Hydrangea petiolaris).

Edibles that adapt well to vertical planting include fruiting vines such as kiwi (Actinidia deliciosa), Siberian gooseberries (Actinidia arguta), edible flowers such as vining nasturtiums, and vertical garden vegetables such as peas, squash, tomatoes, and pole beans.

Columnar plants provide vertical gardening interest. Many can be grown without a supporting structure. Consider planting columnar apple trees, arborvitae (Thuja occidentalis), junipers (Juniperus scopulorum), or Lombardy poplars (Populus nigra).

Vertical Herb Gardening

Grow a bountiful herb garden with tons of different species and varieties—even in a small space. Think of growing herbs vertically (rather than horizontally) to maximize your planting real estate. Utilize shelving, wall hangers, or hanging mechanisms to give individually-potted herbs a place to be that's out of the way.

Vertical Garden Structures

Fences, arbors, trellises, tuteurs, obelisks, and other types of structures make it easy to grow vertical garden plants. Hanging baskets can be considered elements of vertical planting because they break the horizontal plane of gardening. Attach a drip irrigation system for easy watering, or add a rope-and-pulley system to allow easier access to hanging baskets for watering and tending your vertical garden.

If you have an existing structure such as a shed or garage, add a trellis in front of one of the walls so vertical garden plants have a structure to support their stems but don't cause any damage to the wall. Be sure to leave some space between the trellis and the wall for air circulation.

Create a vertical vegetable garden trellis.

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