Greenhouse 6 (Professor’s Greenhouse "Retreat" & Supply Area)

It's no secret that Ethan is simply in love with his plants! Why, he has plants in the greenhouses (where they belong), plants outside the greenhouses, plants in his office, and even has a magically-maintained and enlarged garden in his quarters! House-elves help him manage all of the gardening, something for which Ethan is personally thankful for, as he doesn't have that luxury at home in Tiree!

This lovely greenhouse possesses a little bit of everything. However it is often kept locked. At the front of the greenhouse is a luxurious desk and chair, as well as a potions cupboard full of medicinal preparations. Throughout the greenhouse are various gurgling water fountains, and a pair of beehives from which Ethan eventually gathers honey.

If you can't find the Herbology Professor anywhere else, try looking here - it's his personal retreat from the hubbub of castle life. Though, you might want to knock first...