Your villagers will "see" the following herbs when you fly them over.

The Cactus is located just above the Science area.
The Black Orchid is on the edge of the grassy area below the orchard.
The Rose is located on the right edge of the orchard, below the hanging object.
The Lotus is to the left of the stairs near the bath.
The Tiger Lily is partway up the path to the door (orange flower on right).
The Berry (Magic) or Pitcher Plant (Nature) is located to the left of the alchemy lab, where the kids go when nature calls. These plants only appear when you have purchased level 2 in your faction.