>>49884616
>level up heartstone to 2
>activate delegate farming
>enclose an area in fences
>put a farming sign or a scarecrow inside (if the area is enclosed you can make it as big as you want and only need 1 sign)
>plant seeds
>set a container as shared
>wait
Ideally you'd want a shared fridge so your crops don't rot. If you are scared that your villagers will eat them you can put the shared fridge in a room and make it private with a room sign.
Crops will level up automatically but the level is still capped by your farming skill. If you want better crops you'd still have to grind manually