The Community Garden at Orchard Gardens in Dudley Square blooms beautifully beside the colorfully painted, pitch-roofed, Victorian style apartment homes of this revitalized neighborhood of Roxbury.   This coming together for a purpose is a hallmark of the community that offers 284 apartments to those earning up to 60 percent of area median income and another 47 apartments at market rates.The mix of apartment homes includes 83 one-bedroom, 103 two-bedroom, 113 three-bedroom, 26 four-bedroom, and 6 five-bedroom apartments.   The community includes a large, city-owned park.The nearby commercial area offers a supermarket, a library, many houses of worship, the post office, and the Orchard Gardens Community Center. The center has after-school and teen groups, a computer room, and a gymnasium. Health care is available nearby at the Whittier Street Health Center.   Orchard Gardens has won the HUD and AIA Center for Livable Communities “Community Building By Design Award,” and the National Association of Home Builders “Builder’s Choice Design and Planning Award.”