You can have snow in tropical places if elevation is high enough. It stays there for months. Ecuador’s Volcán Cayambe. has snow in the middle of summer right on the equator. .Plenty of chill all over tropical zones.
Actually no. As far as thousands of scientists around the world versus forum members one can decide whom to believe. I’m not up for challenging Brazil that they are mistaken about the invasiveness in their own country. Whom am I to say they are wrong? Others I guess feel they know more.
I learned a lot from that site. Like seedlings can take 15 years to fruit. So I wasn’t going to graft my seedling to alba, but after reading that I most certainly will. It confirmed what others have said about seedlings, but it is always nice to get info from the botanists studying the species. To a botanist the differences between nigra and alba must look extreme since they have vast knowledge on genotype and phenotype characteristics. Since plant anatomy is such a major part of the field. Why one hires a botanists when seeking a patent. To properly describe plant in a formal way. A botanist that can’t tell the difference between alba, rubra or nigra should be let go. That’s like Botany 101. I myself took one class Botany 401, A fantastic class, loved it!