Perfume
If you point flowers in the same direction you'll be able to smell their wonderful perfume. The best way to get perfume out of flowers is to make them face the same way. Then the smell will go the same direction, making you smell great.
Imagine aiming a bunch of flowers in the same direction towards you. The perfume coats your body. You smell great now!
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You decide to perfume your entire home (ほう) by planting flowers all the way around it, all facing in toward it.
Now when you're in your home the overwhelming smell of perfume assaults your nostrils. It's actually... really strong. Oh... oh no it's too strong, you can't breathe. And you live alone. Help! Someone!