Hi and welcome!
I don't like to exercise either so I can relate! LOL Working in your garden sounds like fun. It can be great exercise too.
There are so many ways you can follow. Atkins, South Beach, Weight Watchers etc., and my personal favorite, Calorie Counting! Research them all and find out which one is right for you.
Everyone on the forum is supportive no matter which path you decide to go. We're all in this together!