Even a small barrier will slow an advancing army enough to give defending forces the advantage. It's more difficult to step over obstructions like these when you're on the march in full armour and if you want to being supply carts, siege engines, etc. through then you'll have to break a hole in the barrier.
There are companies that actually dye your grass green in the US. Very handy if you are caught between a municipal law that forbids watering the lawn and a wacky HOA that DeMaNdS the lawn to be green, or else!
The badrealestatepics account on Instagram posted it 4 years ago but I can’t find a listing. Might be too old. There’s tons of poorly photoshopped estate agent photos out there though.
Unfortunately for them, the market has cooled. People will want to go see the house first. Two years ago, they would have 10 offers above asking in the first few hours.