Soil has a major role in the success of a vertical garden. Quality—not quantity—is key when it comes to soil. Varying characteristics such as texture, water, nutrient availability, and pH levels all impact how your plants grow.
Good soil supports upright growth and adequate oxygen levels while providing essential nutrients to a variety of plants in the form of minerals and organic matter.
Lightweight soils provide an airy structure that holds moisture well and promotes root expansion but may lack vital nutrients. Plant-based compost can add necessary bulk and nutrition to the mix.
Sand improves drainage, while loam offers balance with regard to drainage, water retention, fertility, and aeration, which results in optimal growing conditions for most plants.
Soil selection is determined by what type of plants you’re going to use in your vertical garden—some prefer sandy soil, while others crave clay-heavy mixes or those heavy with organic matter. Knowing what suits you best can save time and effort necessary for maintenance later on by ensuring the correct environment for your plants from the get-go.