“Growing in containers is really very easy, if we allow it to be. Our plants are already programmed to become perfect genetic specimens, if only we can learn how to get out of their way by understanding what is limiting them and removing those limitations to the greatest degree to which we’re capable.” – Tapla (paraphrased)
In a nutshell, it helps to give them a habitat they love so they can thrive and fulfill their glorious destiny. Like people.
Below is an herb spiral under construction (not mine, sorry).
An herb spiral is a permanent container type garden which I can build. It creates multiple habitats just by its shape and orientation. You can even have a frog pond on the low, north side.