Several vegetables can also be grown upward. Pole beans, lima beans, peas, tomatoes, cucumbers, melons, pumpkins, and squash are examples of vegetables that can be grown vertically. Squash, melon, and pumpkin fruit will need some form of support as they develop to prevent them from breaking off. Small-fruited varieties are the best choice for vertical gardens. Cucumbers will develop nice and straight rather than curved.
Tomatoes often produce earlier and larger fruits when staked and trained.
Another advantage is cleaner fruit. Vertical gardening offers more than a space solution. It provides opportunities for every gardening type. 1993 issue, pp. Iowa State University , Ames, Iowa.