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They are, Portugal has lots of eucalyptus trees.
They do not recommend you grow them on your farm as they are very invasive and burn very strongly in case of fire. We do not have any on our farm, but my dad loves drying the leaves and making tea out of them so I brought him some from a forest not far away from our farm.

Back home now after the long 11-hour drive, luckily tomorrow is also fest in the Barcelona area so will have the day to rest.