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With adequate well drained soil mix, any material will work, even plastic. Stop the non-sense that the walls must “breathe”. It´s the substrate aeration that´s important. If you use clay soil in a terra cotta pot your chance of rotting your cactus or succulent is pretty high. BTW , in 2000 , I worked as a plant propagator in San Diego : about 6 millions cactus per year produced all in plastic pots , very , very few died. Plastic is cheaper, lighter, and comes in all colors and shapes – terra cotta has more “charm” , it´s ok but not for mass production.
I agree, but I will say this about black plastic. If a consumer or home owner buys a plant in a black plastic container, and places it in full sun without the protection of surrounding plants with which it was grown in the nursery, it is way more susceptible to heat stress and root damage. Terra cotta will keep soil substrate temperatures cooler in that situation.