Answer:
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
I am the building with the most number of stories.
I start in little but I end in full you'll find me in half and complete.
The higher I climb, the hotter I engage. I cannot escape my crystal cage. What am I?
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
No matter how little or how much you use me, you change me every month.