Croton number and size to pot size
I purchased 4 little Croton plants (about 6 inches tall) about 2 years ago and planted them in what seemed like a big pot for their size (8 inches wide and 5 inches deep). Since then they have grown significantly with the two tallest now up to 2 feet tall.
Are they going to continue to be healthy in this pot together? Or will they need to be separated or put into bigger or deeper pots? And if they do need to be separated and/or re-potted, when would be the best time to do that? I enjoy my beautiful office plant and want to be caring for it properly so it will stay beautiful.
While some people might advise separating your plants, I think the less fussing with them, the better. They're doing well for you in your office, so keep on doing what you're doing. An 8" pot may be getting small for them; I think I would repot the whole thing into a 10" pot now. Since this is an indoor plant, the time of year for repotting is not so important - you could repot now, or wait till spring. Really, any time that's convenient for you will do well.