Expand Your Garden’s Horizons With Vertical Garden

Gardeners are climbing the walls… literally. And it’s not extreme weather, poor soil or tender leaves nibbled to lace by pesky insects that are pushing them to new heights. Instead, it’s a strong concern for the environment. Called bio-walls, green walls, or vertical gardens, this expanding horizon of the horticultural world takes your garden and plants it up on the wall. The benefit: Smart vertical gardening help the environment by reducing urban heat, delaying stormwater runoff, and improving indoor air quality.

The Basics of Vertical Gardening

When it comes to the “wow!” factor, no one does vertical gardening like French botanist Patrick Blanc, known as the “father of living walls.” His gardens run up entire faces of multistory buildings and large walls inside corporate lobbies. Blanc’s stunning vertical gardens are nourished by elaborate soilless hydroponic systems that keep greenery thriving.

These impressive projects are giving creative home gardeners food for thought. In the past, vertical spaces have gone bare on patios, decks, balconies, fences, and yards, but that is changing. There’s a whole movement blossoming to maximize those overlooked upright spaces and add new dimensions to your gardening palette. Vertical gardens for the home expand your planting space, turn walls or fences into focal points, and show off your garden mastery.

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You don’t need to possess Blanc’s experience or artistic eye to create a vertical garden. It’s something beginners can do. “It’s quite easy for the home gardener to tap into living walls modestly,” said Susan Morrison, a Northern California residential landscape designer, Master Gardener, and co-author of “Garden Up! Smart Vertical Gardening for Small and Large Spaces.” Morrison notes that she loves stepping outside and snipping herbs for the kitchen from the wall right next to her back door.

But Colleen Dudley, a senior horticulturist at the Atlanta Botanical Gardens, suggests that you ease into your first vertical garden. “It can be cool looking and novel,” she said, “but you might want to start small because when it comes to watering and plant maintenance, vertical gardening can be labor-intensive.”

Living Wall Plant Picks When selecting plants for your outdoor vertical garden, take into account your USDA hardiness zone, and choose accordingly. Beginners can start with herbs and edibles, such as lettuces and strawberries, or look for interesting combinations of colors, textures, and shapes in local plants and flowers. So for Smart Vertical Gardening for Small and Large Spaces,” follow these suggestions: Succulents require little water and are low maintenance. Good choices include Sedum such as Carnea, Dragon’s Blood and Red Carpet; Echeveria; and Crassula such as Jade Plant, Pygmy-weed, and Rosary Plant. Cold-tolerant plants include Carex or Sedges such as Sparkler, Evergold, and Everest; and Heucheras or Coral Bells such as Caramel, Beaujolais and Plum Pudding. Trailing plants for dramatic effect include Dead Nettle (in a variety of colors), Petite Licorice, Limelight, and Million Bells.

Container Systems

Unlike the costly soilless method used in major projects, beginners first need to choose a container system to hold potting soil and plants. According to Morrison, the four to consider include tray systems, pocket systems, kits, and create-your-own solutions.

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Trays have many gridlike plastic planting sections held together in a frame. You put the unit flat on a table to pack each cell with soil and a plant or two and then mount it on the wall. The cells are slanted so the soil does not fall out. These come in modular sections that can be snapped together to expand your living wall.

The pocket or pouch system works well for both indoor and outdoor plantings. These felt like pockets wick moisture to your plants while having a plastic barrier to keep walls dry. They come in a large variety of sizes and configurations.

Kits can provide just the raw materials for a framework that you construct yourself or a box with a planting diagram to show you exactly what to do. If you prefer instant gratification, purchase a completed “living picture” shipped with the greenery in place and ready to hang.

Not a kit type? Some inventive do-it-yourselfers eschew boxed solutions, instead of turning anything from a discarded hanging pocket shoe organizer, old gutters, or a dented teakettle into a vessel fit for wall-mounted plants. Your imagination is the only limit here.

Tips for Success Vertical Garden

For the highest rates of success with your vertical garden, monitor moisture levels carefully. Because the plants are growing in a minimal amount of soil, they tend to dry out more frequently than those in the ground. Many gardeners install automatic drip watering systems for their walls or choose to display them in protected areas that do not get full sun all day.

Another consideration is planting matching. “You have to make sure they will all do well with the same amount of water,” said Dudley. For example, although both herbs and succulents work equally well on living walls, herbs need a lot of water and succulents need little, and that makes them less compatible.

Growth patterns are also of concern. If you use trailing species, place them near the bottom so as not to shade out and kill what is trying to grow beneath them. Plants that hug the ground or are naturally dwarfed will stay close to the wall and take well to snipping and shearing. For a more attractive look, avoid plants that get leggy or have lots of woody stems showing. Add more interest to your design by taking into account the colors, textures, and aromas of your choices. Wanting to reach out and touch or smell your vertical garden elevates the effectiveness of your wall and moves any garden in new directions.

“Whether you live in an apartment, townhouse or single-family home with lots of yards,” said Morrison, “we all have vertical spaces just waiting for us to exploit their potential.”

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