Answer: Petunias would be one of the top choices for a hangng basket in a sunny location because they are quite heat and sun tolerant. You might want to try increasing the size of the baskets and using a good quality, humus rich soil mix and include a water holding polymer in the mix to try to reduce the chance of water stress. You might also just have to water twice a day in late summer when it is so hot. Some additional plants to consider would be the sweet potato vines, the trailing licorice plant or helichrysum, specialty English ivies with patterned foliage, verbenas and some of the herbs such as golden marjoram or lemon thyme which will cascade to a certain extent.
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