What to do with truck loads of garden trimmings. We use a chipper shredder for some, some is taken to local greenwaste and some is burnt. I don't think city prople have all those options.
Then we put back our mulch, mushroom compost, buried kitchen scraps and things and wait for the rain.
There is no irrigation system here. Just a very wide selection of plants grown with thick layers of mulch and companion plants