Howells on Clematis Lists books, articles and information on clematis by Dr. Howells and also provides links to the publishers. http://www.howellsonclematis.co.uk/ Howellsonclematis.co.uk~Site InfoWhoisTrace RouteRBL Check
Growing Clematis in the UK Describes the different varieties of cultivars and explains how to propagate, plant, prune, and care for them. Includes photos. http://www.gardenaction.co.uk/plantfinder/clematis_1.asp Gardenaction.co.uk~Site InfoWhoisTrace RouteRBL Check