There are four homes in the Middleburg/ Upperville area on this year’s “Gardens with a View of the Piedmont Landscape” tour, including Peggy and John Richardson’s restored stone Colonial residence at “Oakwood.” (Peggy, a lawyer, served as IRS commissioner from 1993 to 1997 and continues to commute to Washington.) The outbuildings of this former working farm feature a kitchen house with historic cookery utensils, a dairy, a 12-sided wooden barn and a bank barn. Consulting with Gail Piurkowski of Echo Hills Nursery, “We tried to site the new gardens and hardscape to blend with the topography,” Peggy said. noting that the sunken pool area features an outdoor shower covered with Carolina jasmine and a row of pink shrub roses. A circa 1800 log cabin (enlarged in the 1980s) and a corn crib are set within enchanting woodland at Lauren and Rene Woolcott’s “Woodslane.” In 2007, the owners began a collaboration with garden expert Nicole Siess of