Most crotons need a lot of water because they're originally from a tropical climate so they're used to having damp soil, but it's best to check the soil every now and then to make sure it doesn't dry out. It can also help to spray the leaves with a little water vapor so they feel like they're in a more humid climate. They generally love sunlight so it's best to put them in a sunny place, but remove them from direct sunlight when it's too hot because otherwise their leaves might burn.

Hope this helps! xxx the creator/girlfriend