I brought an apartment the beginning of the year, with a Chazaka on a yard. I want to put tiles on the yard floor. Their is a bush and plants in pots in the yard. My question is am I allowed to throw away the plants in potts or give them away during Shmita? And about the bush can I remove it from the ground so that I could put tiles on the whole yard during Shmita?

This is all permitted as long as there is no fruit, and it is clear that you are remodeling or creating a tiled floor.