Some bushes do not show a remove icon even when free looking with ALT.

The remove icon is far too difficult to access even with free looking, in addition because of the remove icon placement bushes that are close to each other are not able to be easily removed without removing neighboring bushes first leading to instances where you have to run the entire way around a line of bushes to find the one on the edge that can be removed so you can access the remove icon for the rest.

Some bushes that are directly next to rocks or cliffs cant be removed even though you can see the icon when free looking, for whatever reason the angle to actually get the option to remove is not possible.