Hello all, I have made several observations over the last couple of winters and I also have a couple of related questions.
The specific neighborhood I live in typically does not experience freezing temperatures, this is evidenced by large Jacaranda, Royal Poinciana, etc. However the winter before last, which was brutal, did bring a couple of significant frosts.
As a result, nearly every front yard plumeria planted near the street with little protection died. (One had a trunk that was several inches in diameter giving you an idea of the relative uniqueness of that winter.) OTOH most back yard plumeria were fine. My neighbor has one that is around 40' tall. Most plumeria near a wall, in a courtyard, etc. also did fine. I've not witnessed anyone actually covering their plumeria, regardless of the size.
This tells me that my area is right at a very specific climate line...where a degree or two of radiant heat can make most of the difference. However, I also suspect the genetics of the cultivar being studied has something to do with it.
I would actually like to put a couple of plants in ground in our front yard where they will have little protection. I know, haven't I learned ANYTHING? ...but it seems like I am close to having this as a practical option if I can find the right plant??? I have read that Texas Sunrise hasa much higher cold tolerance than other cultivars. Does anyone have experience with this? Next down on the list seems to be Celadine, Aztec Gold, and Samoan Fluff.
I suppose another option is to just find a neighbor nearby that has a plumeria that had front-yard exposure to the cold and lived, and try to buy a cutting from them.
Just curious about your thoughts...