I would say they are mildly difficult to care for. They are very brittle and easy to damage physically, and for me, it's the only coral I've had that didn't do well in my current set-up. By that measure, I suppose, it's more difficult than the typical lps stuff I have (torch, frogspawn, blastomusa, etc). But then again, that could have been just bad luck with the one I bought.