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« on: March 23, 2013, 01:41:04 PM »
Lila is just a secondary name for a variety more widely known as Opal, a mexican seedling avocado originally grown in Uvalde, Texas. It was named Lila because of something having to do with patent law, I think something like it is called Opal if a certain guy propagates it on a certain rootstock and Lila if someone else propagates it on another rootstock (or something equally stupid like that). Same thing with Wilma also being called Brazos Belle and Pryor also being called Fantastic. The fact that Lila sounds like Lula is just a confusing coincidence. The idea on the internet that Opal is the second most cold hardy avocado and Pryor is the most cold hardy, factually I would say that there isn't much substantiation behind that. Some grower's anecdote turned into marketing, spread as fact. They both have outstanding cold tolerance no doubt but the most cold tolerant avocado is probably a feral tree somewhere in Mexico that gets no love. I think the consensus is these Texas selections should all be a bit more cold hardy than Mexicola. Some sources graft the cold-tolerant varieties on to cold-tolerant Mexican rootstocks and some graft them on to salt-tolerant lowland/West Indian rootstocks,. If you live in a place that has both cold and salt issues, the prevailing trend is to get the tree on salt-tolerant rootstock and bury the graft below the soil line or mound the soil over the graft to protect the rootstock from cold and ensure if killed to the ground the cold-hardy scion resprouts.