What's the best gardening advice you've heard or can give?
The best advice I ever heard was to have a beautiful garden find out what you can grow and then grow a lot of it. Anything in profusion is beautiful.
Also take out any scraggly or sickly looking plants. Just one or two struggling plants will take the looks of the whole garden down. Yes, some things you have to nurse along for awhile, but if they don't recover fairly quickly try something else.
Use plants that are tried and true for your area. We all go through the stage of pushing the envelope, or in our case the plant zones because we want to have something 'different' but in the end a yard with healthy plants adapted for our regions will give us more satisfaction.
BTW, I try, but don't always take my own advice ... LOL
What wise counsel would you offer to the rest of us?