In this verse the word amara-drumaih, with trees brought from the heavenly planets, is very significant. The heavenly planets are known as Amaraloka, the planets where death is very much delayed, because the people there live for ten thousand years according to the calculations of the demigods, in which our six months are equal to one day. The demigods live in the heavenly planets for months, years and ten-thousands of years according to demigod time, and then again, after the results of their pious activities are exhausted, they fall down to this earth. These are the statements that can be collected from Vedic literature. As the people there live for ten thousand years, so also do the trees. Of course, here on this earth there are many trees which live for ten thousand years, so what to speak of the trees on the heavenly planets? They must live for more than many ten-thousands of years, and sometimes, as practiced even now, some valuable trees are taken from one place to another.