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« on: March 27, 2023, 11:15:56 AM »
Long ago it was found that adding drainage rocks to the bottom of the container is not a good idea. Doing so hinders drainage. Adding rocks only raises the perched water table HIGHER into the container. If your not familiar with the term perched water table you can look it up on the internet.
I looked up "adding rocks" for you::
This is a popular step, but Willis says it’s best to skip it. Adding a layer of gravel or rocks to the bottom of a pot actually reduce drainage rather than promote it.
As Willis explains, water doesn’t move easily from one media layer to another, even from a fine-textured material like potting mix to a denser material like gravel or rocks. So instead of the extra water draining into the gravel, the water will gather or “perch” in the bottom part of the soil until it becomes saturated, leaving no space for air to circulate.
Without good drainage and aeration, the plant roots can become severely stressed and more susceptible to plant diseases, and potentially drown and die.