Answer: The upside down tomato you saw was probably planted in a plastic pouch filled with potting soil. Plants tend to grow upward, towards the sun. Planted near the base of the pouch, the plant will grow up, but the weight of the fruits on the stems will drag the stems down, giving it a hanging appearance. You can purchase the growing bags at most garden centers. Fill it with regular potting soil and hang it in a sunny spot.
Barberry doesn't mind wind, nor does Nandina (heavenly bamboo). Either one should do well for you on the west side of your yard.
Best wishes with your garden.
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