Repeating things they intend to do

Does anyone else have to deal with this ADHD trait, and if so, how do you deal with it.  My ADHD husband will say something 50 to 100 times or more before he actually DOES the thing he's talking about. One such incident is spray killing the weeds in the front yard, which he talked about for weeks ahead of time. Finally he puts up some sticks and string around the piece of yard he is putting the weed killer on, but STILL DIDN'T put down the weed killer. Three weeks went by until he ACTUALLY put the weed killer on the grass, but every day.....several TIMES a day, would talk about how he's going to kill the weeds. It gets to the point of obsessive thinking/conversation, when he repeats himself over and over and over again, but doesn't ACTUALLY DO what he SAYS he's going to do. Another item is the taxes. We are 3 years behind in tax returns, but he's talked about DOING them for all this time: especially lately because tax day is tomorrow. (they won't be done AGAIN) I mentioned that we are going to have to pay penalties and fines for NOT doing the taxes for 3 years, which he got angry and said "NO WE WON'T"......'WE DON'T HAVE TO PAY PENALTIES BECAUSE WE ARE GETTING MONEY BACK THIS YEAR". What kind of sense does THAT make? Plus, there are times he talks like this and NEVER gets around to what he's talking obsessively about.

But anyway, he TALKS like this all the time, and repeats himself over and over and over again, until I want to pull my hair out. It this a way for an ADHD person to remember to do things they need to do? Or what? Or maybe he's the only one who does this, I don't know, but would sure like to hear someone else's input.