Caspar Meredith wrote:Where I am we rarely get below -2c or 28f the information I have seen seems to indicate yaupon is hardy down to -15c or 5f. I'm on the coast in the south so usda zone 8 or 9 and it seems as though yaupon is happy between 7 and 9.
I'm a little confused as to why there are no plants here :/
I am not sure it is only about how cold it gets.
How warm are the springs and how many growing months?
It is a native plant here in Texas. Where I live it can get colder than the temps you posted though the next day the temps might be quite warm.
Maybe one of our members can send you some seeds?
Best wishes for your search.