Look at the size of these cherry tomato plants! My husband's grandfather is nearly 90 and I guess he's learned a few things about gardening over the years.
My own grandfather says there's only one problem with gardening as you get older; with his poor eyesight he sometimes mistakes snakes for twigs. Eeek! But he's talented with plants, too; he got his orchid to re-bloom with double spikes this summer!
So I guess the golden years of gardening are still ahead!