If you are thinking about a new garden, it is often helpful to look at lots of other gardens to see what sort of plant materials, colors and design approaches you really like. Developing a "wish list" is a great starting point for a planning meeting regarding your garden preferences. You can visit large or small public gardens or ask your friends about their gardens, and you can look through the numerous books and magazines that provide much food for thought. There are also many excellent websites with interesting and useful tips and ideas.
Following is a list of interesting and useful resources with links to their websites.
Horticulture Magazine http://www.hortmag.com
Garden Design Magazine http://www.gardendesignmag.com
Arnold Arboretum http://www.arboretum.harvard.edu
Information on course offerings and plant species
BBC Gardening Website http://www.bbc.co.uk/gardening
Lots of good tips and horticultural advice
White Flower Farm http://www.whiteflowerfarm.com
Good online plant catalog with excellent photos of a wide variety of perennial flowers.
Wayside Gardens http://www.waysidegardens.com
Good online catalog of perennials, trees and shrubs, and rare plants.
The American Rhododendron Society http://www.Rhododendron.org
Non-profit organization whose purpose is to encourage interest in and disseminate information about the genus Rhododendron.
The New England Wild Flower Society http://www.newfs.org
The oldest plant conservation organization in the United States, the Society promotes the conservation of temperate North American plants through research, advocacy, education and horticulture. The NEWFS headquarters and botanic garden,The Garden in the Woods, located in Framingham, MA., is worth a visit.
Tower Hill Botanic Garden http://www.towerhillbg.org
The THBG website lists special events and describes the gardens available for touring. THBG is located in Boylston, MA.