Certain plant species possess biological mechanisms, such as active meristematic stem cells and clonal propagation, that allow them to sustain indeterminate vegetative growth indefinitely.
Multiple provided papers discuss plant indeterminate growth, meristem function, and extreme clonal longevity (e.g., papers 2, 3, 6, 8, 10), which directly support the claim that certain plant species are biologically capable of indefinite vegetative growth. There are no papers refuting this well-established botanical fact.