GREEN ROOF

A roof that grows grasses
All others surpasses.
I'm sure that it will
Reduce your energy bill.
That's a test it passes.

A green roof will do you no wrong
And will last near twice as long.
It's a thrill to grow legumes
Above all your bedrooms,
And it's not done be a throng.

It's a fine thing that you do
When you convert C-oh-two.
If the weight is too much for your home,
You can grow roof plants in foam.
Reduced runoff is a benefit too.