Thank you for reaching out to ask2.extension.

Terra cotta pots tend to stay warmer than plastic pots and that may be why the plants are bigger, especially started from seeds.

Terracotta garden pots are more porous than plastic. This allows water and air to pass through more easily, allowing the plant roots to 'breathe' and preventing common plant killers such as root rot. a plant that prefers to stay on the dry side will appreciate a clay pot that absorbs excess water.

I find that once it gets hotter, you need to be more aware of how fast the pot dries out.

So to answer your question, it will depend on the plant whether terra cotta is the answer.  There is no right answer to the type of pot.  It will depend on the plant, where it’s located, etc.