If it's the last Friday of spring, then it must be time for an annual road trip to White Flower Farm in northwest Connecticut. Every autumn when we re-up our membership in the local National Public Radio station, WNPR, we receive a $25 gift certificate to that splendid nursery as a premium, and to give it maximum value, we retrieve it in mid-June when the Farm has its annual yard sale, which features an eclectic mix of plants and garden stuff, most of it at least half-off retail prices. Who could resist that kind of bargain? In addition, of course, the grounds of this marvelous place are at peak blooming, and there's an abundance of horticultural inspiration and ideas, to say nothing of photo ops, every where you look. In years past, I'd concentrate on blossoms and bugs; this trip, I paid more documentation attention to the stuff, which we dutifully looked through, the amazing collection of bare-root plants in particular, staked a claim to and brought home to enrich the gardens.