As long as a tree is alive, it grows.

Thank you Ron for your response!and the same time ijust see that i made a misprint,calling "rows"what should be named roots

To answer your question a bit more fully -- An older tree will usually grow much more slowly than it did in its youth, but it doesn't stop entirely until it dies. That's why annual rings can be used to measure tree age (wherever the rings form once a year). Roots may no longer extend for great distances with each year's growth, but they add many fine roots annually which die and get replaced within the year. Leaves have a finite life span, so even in "evergreen" trees the leaves die and are replaced. N