Re: Bigger pots?
It's not wicking by other plants that is important -- it is wicking by the soil itself. Pots create a "perched water table" that can keep the roots saturated soil for a long time, whereas in the ground, if there is decent drainage, water will not stand around the roots. If the weather is warm (e.g., the tropics, or summer in temperate areas), that extra water probably won't matter at all. If the soil is cold, it will be a problem.
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