Visit two of the area’s finest fall gardens in their autumn glory.  The Dover garden sits on an acre of land, not far from the Charles River, with rich alluvial soil and plenty of moisture and light.  With these ingredients, Carrie Waterman has created an outstanding naturalistic garden, which has evolved to accommodate the owner’s passions for plant propagation, native plants and color. Plants with long bloom times and handsome foliage fill the mixed borders which peak in fall splendor. In nearby Needham, discover a fall garden that glows in the autumn light, highlighting a collection of brilliant maples, golden birches and deciduous confers, beech, bamboos and grasses of every type.  Using variation in foliage size, color, and texture, Ellen Lathi has achieved a bold and colorful effect for four-season interest. Natural stone, a bog filled with large-leafed plants, and a stream add to the fall scene. Both gardeners are fans of serendipity and love to see the native plants, with the help of the birds, spread themselves around and get comfortable!  Many Garden Club of the Back Bay members may remember seeing Ellen Lahti’s slide presentation at The Country Club last year, sponsored by The Boston Committee.  This tour is presented by The New England Wild Flower Society, and will cost $30 if a NEWFS member, $36 if a non member.  To register, log on to www.newfs.org, or call 508-877-7630.