Answer: That is a tough location. Most plants that take partial shade prefer morning or late sun, with protection from the hot mid-day. You might try coleus, pansies, salvias, snapdragon, gaillardia (blanketflower), and monarda. Use a layer of mulch to help maintain soil moisture and keep roots cool. Clematis might work for you on a pergola, because they like their roots in the shade, but their tops in the sun.
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