Q.Indoor crotons
Last year I bought a number of large (one foot tall or so) croton plants, and have done well with them and the colors are great.
This week, I found really small crotons for sale, and couldn’t resist.
Please see the photo; each pot has 3 plants in it. I want to move them to bigger, better clay pots. I am wondering if I can separate them, or if I should keep them together as one group until they get bigger. Also, how large of a pot is too much? I know they don’t care to be handled and moved all that much; can I go with a large pot now, or should I start small and move them as they grow? I was thinking a standard 6 inch terra cotta pot, but if they will be OK with a bigger one, I’d consider it.
Thank you so much in advance for your time and effort!
Dan

Sure, you could separate the multi stem plant. These are often planted in groupings for more color effect; so you can decide! Only use a pot that is 1 or 2 sizes larger than the nursery pot.
https://www.gardeningknowhow.com/houseplants/croton/care-croton-plants.htm