Probably tons of seeds for the one on the right didn't sprout. This one did in a favorable area and survived to this stage. This probably means that soil chemistry, light, and water are at good levels.

The one on the left was put there regardless of what it wanted and regardless of conditions. This means it's going to need to have the soil chemistry, water, and sun exposure adjusted to its needs instead requiring work on the part of the human (if the task is even possible).