Spring Island is the first seasonal island that can be discovered by the Protagonist.
Monsters that have been befriended by the protagonist can grow crops or trees on this island, as long as the protagonist has already fertilized them with the Spirit Wand.
All Seasonal Islands do not have monsters.
Spring Island is a an Island with eternal spring, and thus all Spring crops can grow here year round.
The island is circular in shape with one large tree in the center and a small river flowing from North to South in the eastern half of the island. One can fish Spring fishes in this area.
The Request to find this island is given by Lily.
Spring Island is the place for the player to plant spring crops which he/she can use to cook food, sell, or give to eligible bachelorettes/bachelors to raise FP and LP.