Just wanted to know if i keep my herbs in pots on the window sill will i have to seperate them i was told that mint grows as big as the pot it is in i remember my parents having a huge mint bush in the garden which was beautiful every year just left there but will indoors plants be the same.?? plus i saw someone using cooking seeds to grow plants wil this be ok or not.?ive forget who it was on tv who did it