The Greenhouse is where you will craft all your colorful Trovants. Trovants are then planted from inventory and upon harvesting you will get a Dragon Treat! Hungry Dragons love these! You will want to craft the color of Trovant that corresponds with the color of the Dragon you wish to feed.
Tip 1: Crafting many Trovants can use up a lot of resources that you will need in timed quests. It is always best to have neighbors feed your dragons when possible so that you can save on nectar, seeds, ink and other valuable inventory stock
Always enchant your Greenhouse so that you get 2 Trovants!