I know that some plants die for old age like a lettuce. But there are trees like Baobabs or larger Ficus in the tropics of whom we don't know their age. And trees like spruce reaching 9950 years old, which die for environmental factors and not by age.
However, E.g. when we multiply vegetatively an olive or cacao tree, we use a fragment or clone from a unique individual passing the same genetic information, again and again.
Then, can these plants live forever?