Yes—there are several urban planter box options that work well for curious cats, especially on balconies, patios, and small city terraces. The best choices combine stability, covered soil, and cat-safe planting. A raised planter box with a removable mesh lid is one of the safest options because it keeps cats from digging while still letting plants breathe. A wall-mounted or railing planter is also useful in tight spaces, provided it is firmly secured and has no sharp metal edges. Self-watering planter boxes with enclosed reservoirs are another good choice, since they reduce open standing water and keep curious paws out of the water supply. Tiered planter boxes with top covers can work well for herbs and small flowers, and a dedicated cat-grass container gives cats a safe place to chew and dig.
For planting, choose pet-safe options such as cat grass, catnip, basil, rosemary, thyme, parsley, Boston fern, and spider plant. Avoid toxic plants such as lilies, sago palm, pothos, philodendron, azalea, oleander, and tulip bulbs. Skip cocoa mulch, which is toxic to cats, and avoid fertilizer pellets, pesticide-treated soil, and sharp decorative stones that can be swallowed. Cover bare soil with large river rocks that are too big to swallow or with a securely clipped mesh screen. Empty saucers regularly to prevent stagnant water. No planter is completely cat-proof, so supervise curious cats at first and place unstable boxes out of jump range.