When you grow your vining vegetables upward, you use less ground space. This increases your yield per square foot because you can fit more plants into the garden. But saving space is just one reason to grow your plants on trellises. Here are some other advantages to growing up:
So the benefits of trellising are clear. Before you set up a trellis, though, keep in mind these two important points:
What can you grow vertically?
Trellis nonbush or indeterminate types, which keep growing and producing fruits until frost. (Determinate varieties are often bushy.) Check out this plan for a sturdy tomato tower.
Pole beans, Gourds, Melons.
As a general rule, any variety with fruits smaller than a volleyball can be trellised. Vines will grow strong enough to hold the weight of the fruit, so there's no need to support fruits with individual hammocks.
For more vertical gardening ideas, check out Derek Fell's book, Vertical Gardening.