I shoot my coffee grounds onto my garden at home , makes my hostas big and dark green. If my weed was at my home I’d add it around the base. I grow in the ground in an organic garden. Live by the ocean so I’m always supplementing the garden with fish, crab , seaweed and anything else I can get. During scallop season , guts and shells go into my garden. This year I was able to get as much Canada goose crap as I wanted 2-4-2 naturally. Roto tilled that in. I spray all my plants with kelp every 5 days. Organic for me is an ongoing project. In a pot , not to sure. But I love coffee grounds.just took this pic .