Couple years ago we cut the weeds on a parcel of land about 6k sq meters. Got lazy and left the piles for more than 6 months, ended up with a form of compost. The next year we forgot a couple piles which were under some non-productive mango trees. Voila! We got mangos. At that point we moved all the rest of the piles (not under mangos) and scattered on our garden, which covers about 500 sq meters. Weed pulling there now takes about 30 minutes a week. The weed mulch covers the dirt (which hardens quickly under the sun here), maintaining the moisture. As a result, when we plant we no longer till, in fact, we no longer use a shovel, just digging with our hands. We then piled the cut weeds in our trenches (pathways) which pulls water from the drive and is about 2-3 feet deep in places. Not only is it soft to walk on barefoot, but it also protects the moisture and is cool on the feet. We love weeds. The 6k sq meters is slowly being converted into orchard, but there will still be weeds. We have another parcel about 2.2 sq meters that will be the new weed garden.
We have never used any commercial products on our land, which has never had commercial products before us.
We highly recommend weeds! Makes the job easier!