Upside down hanging plants are a clever and space-saving solution for those who want a vegetable garden, but don't have any land in which to plant. Container gardens are the classic way to plant a garden if you don't have a yard, but using upside down hanging planters uses space that would ordinarily be empty. Planting some of your garden upside down will allow you to harvest twice the vegetables in the same amount of space. Generally any plant with thick, sturdy stems is a good candidate for a hanging planter, as long as the resulting vegetable isn't too heavy.
Tomatoes are the first vegetables many people think about for an upside down garden. The trailing vines and sturdy fruit stems make tomatoes a logical choice for this type of planter. Choose a smaller variety of tomato, or one that is designed for container gardens, for the best results. Pixie, Sweet 100, Basket Pak and Sundrop are some of the best varieties for this method.
The thick stems and stubby connections to the vegetables make cucumbers a good choice to grow in your upside down garden. Look for one of the varieties especially designed for container gardens, as they will be shorter vines, and have somewhat smaller cucumbers to harvest. Salad Bush, Spacemaster and Picklebush are all varieties that grow well upside down.
Sweet peppers and hot peppers both make wonderful additions to hanging upside down gardens. The stems adapt readily to the new growing direction and they are short enough to stay neat and not straggle over your garden area. Smaller peppers are probably a better choice, as record-breaking large varieties might break off before they ripen. Any of the hot peppers like Jalapeno and Habanero are a good choice, as well as sweet pepper classics like California Wonder and Purple Beauty.