Please make sure to not dispose of the ghatas in the rivers and water body near you. That would be polluting the very country we live in.
As per Hindu rituals, you can let the mango leaves decompose in the soil. The same goes for coconut. If you do not have a garden or a lawn, make sure to give it to your local temple as they can take care of it for you. Same goes for the Barley sprouts.
Don't pollute guys