How about putting a big stone flowerpot in front of the yard?

Not so good. It is not good to put a big flowerpot with stones in front of the yard, so you can't put flowerpots at home. Although it is a good thing to open the door to welcome the green, placing flowerpots at the door will hinder the passage of people, especially some large flowerpots, which will also attract insects and mosquitoes, which is also very unfavorable for placing Feng Shui.