Terra cotta pots have long been considered the gold standard for container gardening. Made of clay, their porous walls allow air and water to pass through, preventing the deadly effects of overwatering. But now other pots are catching up, and perhaps exceeding, terra cotta's effective design. Take, for instance, the self-watering planter from Santino. Its built-in reservoir pumps a steady supply of water into the soil, while a drainage system pulls excess water away from the roots and back into the reserve. With a planter that smart, even serial plant killers can garden with confidence. Available on Amazon; $8.58.