Yeah, I caught that in your previous reply and still kept the second-person pronouns. I'll blame a sleepy brain, it's been a long day.
I can only hope I'm gardening strong when I'm her age! I just turned 30, and my bum knee is already making me feel like an old hen destined for the soup pot
I'm sure there are other things that could help, but I find that mulch and compost are two things that a garden can never have too much of, particularly on nutrient-poor sand. I can't imagine gardening without them. I may be a bit overzealous - I will compost just about anything and use about half as many things as mulch, sometimes well outside the conventional wisdom. So far, my plants don't complain.