|RHS Hardiness Ratings|
Compiled and published annually by the Royal Horticultural Society (RHS), the world’s foremost gardening charity, RHS Plant Finder 2014 lists more than 70,000 plants, together with details for more than 570 suppliers, making it the most comprehensive directory of plants available to buy from UK and Irish nurseries.
RHS Plant Finder 2014 contains over 3,800 new plant entries, including Clematis ‘Prince George’ named to celebrate the birth of the royal baby."
At the 5th Annual Botanic Gardens Conference in 2012, The Queen's Botanist, Professor Stephen Blackmore, addressed the group. This YouTube of his talk is well worth 30-minutes to hear. Red Lists were new to me.
The RHS 10.30.15 press release addresses their new eco-conscious approach to renewing an interest in gardening.