I was just thinking about how when I was growing up my uncle had tons of plants overflowing his apartment (like mine is now) and he always used to ash his cigarrettes into different plant pots. He didn't put 'em out in there just "tap" the ciggarette on the pots brim and the ash would fall on the soil. He claimed it was a good source of potash for plants.
What do you all think of this?
What do you all think of this?