Elusive, I would be happy to use this compost.
A lot of the value of compost lies in its biological enrichment of soil, as much as chemical.
The nitrogen in grass is perfect balance for carbon in leaves, good work by your church!
As Bluebell says, cardboard no problem. And you need use it only where weeds are thick: I do not use cardboard now my garden is clean of weeds.
Happy growing.
