Old farmer funny jokes

An old farmer writes to his son in prison;
Dear son, this year I wont be able to plant potatoes because I can’t dig the field by myself, I know if you were here, you would help me.
The son writes back; dad don’t even think of digging the field because that’s where I buried the money I stole.
The police read the letter and the next day the whole field was dug by police looking for the money but nothing was found.
The following day the son wrote again….
Now plant your potatoes dad.. Its the best I can do from here…