Are plastic plants from the pet store okay?
Yes. Having plastic plants in your crabitat is okay. You should ALWAYS sterilize new crabitat decor. What I would do with the plastic plants is boil them in salt water for a short while. I haven’t done this yet. If you are weary of boiling them, just soak them in salt water. If you have the silk type of leaves on the plants, you should only rinse them in salt water. If you boil them, they will fall apart.