Hello Sylvie,
We’re in the process of bringing a couple of acres into veg production, we have collected large amounts of cardboard, which works really well with a good overlap(though it does take a lot of time to collect – some businesses are eager to get rid of it) and a good layer of compost/manure on top. We are doing it bit by bit. We tried a shortcut using thick recycled Kraft paper to speed things up…it was a disaster, the dandelions thrived! We have also tried biodegradeable corn starch sheet mulch – but it also is expensive. I think I saw something Charles wrote which mentioned horticultural paper but I haven’t yet found a supplier and would like to ask him if he knows where I could get it and does it work?
All the best,
Debbie