Books in the Wood Cake series

Gree is an odd and resourceful tree who loves drinking tea. But he realizes one thing is missing: he wishes he had someone he could talk with while drinking his tea. Gree decides to go on an adventure to make some new friends he can invite to tea. Follow Gree as he encounters a handful of unique characters - each on their own special woodland adventure. Will he ever find someone to invite to his tea party? And how exactly does a tree invite someone to anything?