Moving urban planter boxes once they are filled with plants and soil can indeed be challenging, but it's not impossible. The primary difficulty lies in the significant weight. A large planter, especially when wet soil and mature plants are added, can easily weigh hundreds of pounds, making it unsafe for one person to lift.
The key to successful relocation is planning. First, assess the weight. If possible, stop watering a few days before the move to reduce moisture weight. For very large or heavy boxes, the best solution is to partially or completely empty them. Remove the plants and some soil into temporary containers, move the empty box, and then replant.
For boxes you wish to move intact, proper equipment is essential. A sturdy plant dolly with locking wheels is invaluable. For heavier boxes, a furniture dolly combined with moving straps can provide leverage. Always use proper lifting techniques—bend your knees and keep your back straight—or, better yet, enlist help. Consider the new location's sunlight and drainage needs before the move to avoid having to relocate it again soon. With the right tools and preparation, you can successfully reposition your urban garden.