Relatively long period of life, usually more than two years herbs such as mint, onions and so on.
Root perennial herb is generally more stout, and some with long roots, tubers, corms, bulbs and other organs, winter, still a quiet part of the ground to sleep, to the second year of climate warming, which then germinate and grow.
This growth from year to year, underground roots or stems may gradually mast up and perhaps branching. This gives us the basis to identify their age; underground parts from its many branches, stems or roots of the size, length, thickness to guess its age. |