Yes, there are urban planter boxes with wheels designed for exactly this kind of flexible deck gardening. You can find ready-made rolling planter boxes in resin, powder-coated metal, and wood, and many come with drainage holes, liners, or self-watering reservoirs. These mobile garden planters are useful on decks because they let you move plants toward sunlight, create space for entertaining, or shift heavy containers away from railings during storms.
When choosing a deck planter with casters, check the wheel type and load rating first. Locking casters are important so the planter stays put once you position it. Swivel wheels make turning easier in tight urban spaces, while larger wheels roll more smoothly over deck boards and small thresholds. Also confirm that the casters are rated for the combined weight of the planter, soil, water, and mature plants. A lightweight resin planter may be easier to roll than a large wooden or ceramic-looking box.
For deck protection, look for rust-resistant hardware and non-marking wheels. Good drainage is essential, but use saucers or a liner so excess water does not stain the deck. If the planter is very heavy, empty some soil before moving it, or choose a smaller self-watering planter box with a built-in reservoir. With locking casters and a sensible weight limit, rolling planter boxes can make a small urban deck much more practical and enjoyable.