Leaves on needles

The area of just one leaf
exceeds a needle as you know.
Lying on needles it’s a thief
of the sunlight for to grow.

However firs have got a friend
in the wind that likes to blow
all the leaves which then do end
on the ground, sinking so low.

Disadvantages can change
by a factor like the wind.
It depends on time and range
if they do and thus rescind.