Seed Satchel
From Zelda Wiki, the Zelda encyclopedia
http://www.zeldauniverse.net/images/stories/games/z7/items/satchel.gif
The Seed Satchel is an item that carries the Mystical Seeds found throughout Holodrum and Labrynna. It is the dungeon item of Gnarled Root Dungeon in Oracle of Seasons. In Oracle of Ages, the Maku Tree gives it to you in the present after you rescue her in the past.
The Seed Satchel can be upgraded to hold 50 seeds instead of 30, and then 99 seeds (through a secret) instead of 50.