I've tried to start growing chinook and cascade in central Florida. I know it is possible to at least grow cascade as far as south Florida. Iv'e been hitting a brick wall. My cascade gets about 1/2" from a rhizome and dies. The chinook gets about 1 1/2" and shrivels at the base and dies. The leaves do not shrivel first so I'm thinking they are not flagging or out of water. The soil is drying around so I know it is not fungus. My only though is it just is to late for a new plant to start due to the heat. The only book I have read says it is best to plant in february and this is in Oregon. Thank you the for help in advance.