A garden actually isn't that great, it has limited CO2 storage capacity once it's in balance.

Productive land, specially timber, is a good way of capturing CO2, because it will end up stored in products.

We tend to naively think we should reforest land and leave it there, and it can be good for other reasons, but is a poor strategy for carbon capture. We need to _aggressively_ go back to using timber and vegetable fibers as construction material, instead of concrete and steel that have an enormous carbon footprint.