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RE: TreeTuesday - An (old) olive tree in its natural habitat
Olive trees tend to create strange shapes when getting old, even opening holes in the trunk or in the base. My mum owns a few old olive trees, but they were cut a few years ago for wood, but they re-sprout, don't worry!
I never heard about russian oilves, and after a search I found that its common name comes from its similarity in appearance to the olive (Olea europaea), I also found that is now also established in North America, being invasive in some parts (https://www.invasive.org/browse/subinfo.cfm?sub=3022).
Yes it can be invasive.....it's always the way when a plant is displaced. That's interesting that the dead tree resprouts.
It can happen, but not to all. I always think of potatoes and tomatoes that aren't native from Europe and they aren't a problem. But what you say is right, it's better to prevent and not displace species!! In what concerns to the olive cut, it's not killing the tree, it's a kind of pruning that can be done in the top of the trunk or in the base, with the purpose of getting new wood.
We have them out here Long Island NY, Russian olive, They get into abandon fields and make them impenetrable.
That seems very invasive behave...Do you know if there is some entity controlling it?! I should search more about what is being done in USA in what concerns to invasive plants control...(but not today!!)