One of the key requirements for quality soil is that it can hold air and allow room for the roots to breathe, resulting in better drainage. But, this ability of the soil also diminishes each year.
Even if you blend some fresh soil, by the end of the second year of the original soil, it would have lost all its capacity, and the new earth will be half incapacitated and almost useless.
By the third year, naysayers warn, the gardener will probably see a significant drop in production and perhaps even the deterioration of the health of their container plants.
To read more Improving Your Container Gardens With Crop Rotation
