I grew up with several plants that I now have quite a sentimental attachment to. They're all pretty common, but I really love having them in my garden. One of them is the pink bleeding heart --I've planted one every place I've lived --even back in college as a grad student, sharing a house with other students. When I moved to this area for my teaching job, I lived in a ground floor apartment in a big complex with a patio. I asked if I could plant some flowers, and I left a bleeding heart there too, when Rob and I moved to this house. Sometimes I wonder if it's still there. I now have three pink and two white bleeding hearts in the various gardens around the house.
Another plant I really love from childhood is the flowering quince. I tried to find it at nurseries and online, without any luck. Then a friend here, who has a horticultural degree and did landscaping work for a while (she's now running her own farmette, raising mostly chickens and vegetables) mentioned that her neighbor had a flowering quince that kept creeping into her yard. She brought me a stick she dug up from one of these encroachments five or six years ago, and it is now firmly established. With our amazingly warm spring, it is bursting with buds, and looks fabulous.
Do any of you have plants in your garden because of a former attachment?