The ones by Thierry Delabroye seem to be the best growers. But Terra Nova has produced some good ones also. Stick to the ones with Villosa in their background. Always check for frost heaving many require replanting in the spring , and most preform better when divided every 3 years. Make sure they have very good drainage , they do not like to be kept wet. Also vine weevils can be a problem if not detected.Some of the ones by Terra Nova are made for different parts of the country. For example the ones that they say do well in pacific northwest do not do well for me in N.J. You can check their web site for info on their plants. You might want to try ones by The Primrose Path. They are developed in PA.
