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| CACTUS GURU Scott Calhoun, a Tucson-based garden designer, dishes about cacti in The Gardener’s Guide to Cactus: The 100 Best Paddles, Barrels, Columns, and Globes (Timber Press). Calhoun provides information about the plants’ native habitats, and how to cultivate the desert beauties in your garden. Included are lists of spineless, culinary and scented cacti, along with design suggestions and the best tools for planting. —Jacque Gutierrez
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