if your growing in soil style pot culture (including soiless media pot culture) then yes its very important. The soil acts as a reservoir to hold nutrients and water. The soil also acts a media for microbes that make organics or fertilizers (like Ureas) to break down to the plant usable forms. If you are root bound then you do not have an adequate reservoir or media.
If your media has adequate drainage you can compensate with frequent watering with water soluble fertilizers, but then why are you growing in soil and not hydroponically?
Ideally Repot just before they become root bound.
If your media has adequate drainage you can compensate with frequent watering with water soluble fertilizers, but then why are you growing in soil and not hydroponically?
Ideally Repot just before they become root bound.