The standard plant dolly is fine for use with lighter pots, but when planters get over 100lbs the standard plant dolly just doesn't cut it anymore. A few companies have started to manufacture heavy duty plant dollies for this very reason. These dollies or caddies feature heavy duty plastic construction with caster wheels constructed of metal and thick plastic. Some dollies feature locking wheels to keep the plants in place.
Depending on the size and style of the heavy duty plant dollies, they can hold up to 500lbs! Now you can move your plants around with ease. Great for moving plants from indoors to outdoors and vise versa. Also, great when trying to move a plant to clean around the the planter.