If there are ever no seeds on a particular board, then, at most one time per day, every tree on that board will drop a seed as though a "Germinate" spell had been cast.
One player who is present on the same square as a tree when it drops a seed (chosen at random, if there is more than one player on the same square) will receive a Seed Shell, which is a non-rare item that is not sold in stores. If no player is present on the square when the tree there drops a seed, then the seed shell simply vanishes when it hits the ground, leaving just the seed.
A new spell exists: Make Medicine. Make Medicine requires two seed shells, and 10 Mana Energy. When cast, it turns the two seed shells into one Vial Of Medicine.
A Vial of Medicine is a non-rare item that is not sold in stores. A player with a Vial of Medicine may quaff it at any time, healing one wound completely.