We're kicking off our list of Container Gardening Ideas with a tip that will have you thinking outside the box—or planter. Consider using a cast-concrete pool for a miniature garden. Because these pools are made to accommodate plumbing, there are already holes in the bottom that allow for drainage.
Dragon Heart Geranium, from Dutch Gardens. 18 to 24" tall. Perennial (zones 5-8). Loose habit. Sun to partial sun.