Citrine showed Lavender that every time they take a herb from nature, they must put a small piece of it back into the earth. This is so the herb can sprout again and continue to provide what the pack needs.
Lavender was a bit disappointed with his voice after the next howling attempt but adults always say that it will change for the better with time. Lavender believed them, but can't that day come sooner?
New Moon
Autumn
Hunter 
Hunter