The Know Maintenance Perennial Garden"A veritable goldmine for gardeners." Plant Talk We've all seen gorgeous perennial gardens packed with color, texture, and multi season interest. Designed by a professional and maintained by a crew, they are aspirational bits of beauty too difficult to attempt at home. Or are they? The Know Maintenance Perennial Garden makes a design magazine worthy garden achievable at home. The new, simplified approach is made up of hardy, beautiful plants grown on