In article , Franz Heymann
writes
It means when the plant is alive and growing and thus consists of living
organisms.

If I were to try and classify that statement properly, my language would
have to be so anally oriented that you would detest me even more than you do
now, so I will refrain.

Sorry about that Franz, I should have added that botany is the science
of plants.
--
Alan & Joan Gould - North Lincs.