A trellis provides many benefits to a landscape. Not only does it conserve gardening space and assist in providing a delicious vegetable or fruit harvest, but it can also add an architectural element to a garden, even creating full privacy screens. Trellises have been used since ancient Rome for functional gardening and vertical design, and it is important to pair the best type of trellis to the vegetable you are growing. Because plants have different growing habits and sizes, weight, size and accessibility are all things to take into consideration when choosing a trellis.
A wall trellis, also known as a flat trellis, is thick, large and sturdy. Usually these are secured to a wall, into the ground freestanding or used to create a privacy wall on its own once covered in vegetation. This trellis supports thick, climbing, heavy plants if necessary, although any of the creeping vegetables that have far reaching vines will grow well on the structure. Wall trellises can be lattice, metalwork or netting, and you can build your own or buy them at a garden center. Creeping vegetables that grow best on this type of trellis includes tomatoes, peas (particularly with the netting trellis), cucumbers, beans (non bush types) and zucchini.
Planter Box Trellis
A planter box is beneficial for those who don't have a large area for gardening. A planter box is basically a grow box filled with soil, with a trellis secured to the bottom of it, emerging about 2 to 3 feet up from the box. This is ideal for windows, decks or patios. Creeping vegetables that thrive best in this type of trellis are those with shallow root systems and those that do not climb high, such as acorn squash, miniature pumpkins, buttercup squash and other non-bush varieties.
This three-dimensional trellis is used most often on landscapes with plenty of room. It is also one of the most artful and architectural trellises. This type of trellis is pyramid shape, so the different sides allow you to grow different types of vegetables on each side, or a large crop of the same one. They are most common in metal, cedar and cherry wood.This type of trellis is works well for pole beans, gourds and melons.