ROGUE VALLEY CLIMATE CHANGE?

 When I first moved to the Rogue Valley in 1971, I couldn't buy agapanthas (Lily of the Nile) anywhere. I had to "import" them from California where they enjoyed popularity, even on freeway medians. Here the standard answer to my query about them was, "Oh no, they aren't possible in our zone!" (Sunset zone 7). And they didn't survive the cold winters so I stopped planting them back then.  
HOW TIMES HAVE CHANGED!

Today they are widely available at all nurseries and garden centers in the valley. For the past several years we haven't had the extreme low temps that would kill them! Other formerly tender plants have also become available at local nurseries suggesting that our climate has indeed changed!