Perched on a hill near Fashion Island in Corona del Mar, this isn't just a nursery where you can buy plants and flowers. No exaggeration, it's a 7-acre landscaped park, a place to take a date on a pleasing stroll. It's also a high-end shop where, at Christmastime, you can find the best handmade tree ornaments in Southern California. Of course, each one might cost $75 or $100, but at least the Joneses will be jealous. Don't let the prices wreck your mood, though. This place serves as a fine backdrop for special occasions. On a bench near the palm-tree section, we recently overheard a young man propose to his girlfriend. She said yes; they kissed, hugged and resumed staring fondly at the flowers.