Self-described "inveterate walkers" who "know an aesthetic treat when [they] see one," Marina Harrison and Lucy D. Rosenfeld (coauthors of Gardenwalks: 101 of the Best Gardens from Maine to Virginia) embark on Southern Gardenwalks: A Guide to the Most Beautiful Gardens of the South, their sixth book together. They open with lovely, informative essays about the various types of Southern gardens (colonial and plantation, topiary, rock) and then describe, state by state, the most beautiful and welcoming gardens to visit. Perhaps the best part of their guide is the final section in which they list suggested outings. Fanciful line drawings add a final dusting of charm to this practical and delightful book. ( Mar.) Copyright 2001 Cahners Business Information.