When it comes to planting and harvesting, there are very few differences between horizontal and vertical gardening.
Before you plant
Whether you’re using a container or a strip of ground, the best place to start is by making sure you have soil conducive to growth. If you’re using containers, start with a good, nutrient-rich gardening soil from the gardening or home supply store.
Planting in the ground first? Start by creating a pit between 6 inches and a foot deep for each spot where you’ll be planting. The depth varies on the root system of the plant, of course. Take the soil you removed and create a half-and-half mix with compost, then refill the pit.
If you haven’t already decided what will go where in your vertical garden, this is good time to do so. Make sure to install all support structures for vining plants at this point. Doing so after you plant can damage the root systems of seedlings or mature plants. Make sure the structure is positioned over where you will plant to give the tendrils and vines the best chance to take hold.
Planting your vertical garden
Now it’s time to plant, following the package directions on your fruits or vegetables of choice. While you’ll ultimately be responsible for making sure the garden gets enough water, it never hurts to plant during a rainy period to ensure adequate moisture. Stick to about four seeds per planting area to avoid overcrowding; then water gently. As the seedlings emerge and get to about 4 inches high, you’ll want to thin them to ensure they don’t crowd each other out.
Check on your plants every day so you can monitor moisture and thread new tendrils or vines upward through your support structure. Some heavier vines might require a little extra help, so don’t be reluctant to use a natural twine or garden ties to secure them to the supports. Water as needed – especially until the plants are fully established – and check for disease growth and pests.
Once your vegetables or fruits have matured, harvest them as you normally would for each individual variety. Do take special care not to yank down your support structures in the process. A simple pair of garden shears will help you cut from the vine – rather than pull – heavy items like melons or squash.
For non-vining plants, there should be very few differences from traditional harvesting. Just take care to avoid significantly disturbing the soil, neighboring plants and the vertical structure itself.