I just bought a Clematis Ville de Lyon. I´m not quite sure if it is hardy enough for Iceland, our weather is so different from most countries. Our winters are not very cold, seldom lower than 5°F, but usually more like 15-25°F. The summers are cool 60°-70¨F. I think it is still too cold here to plant it in my garden, but I´m very excited to see how it does here.