20x40 with loft cabin north west missouri

[johncherron65]

Hello , We have been reading about everyone's projects and are so excited    to have received our plans. I am disabled with severe arthritis in both knees. they both have to be replaced  so i work slow and take many breaks . I have been in or around construction all my life so nothing new.we are doing post pier construction and hope to have pics next week along with pouring of the piers. I have to remove an old tree first this weekend. can you guys give me some advice on what to use on stump to keep from growing back?  I know i should remove but don't have the means and it is not a very strong tree.