Mystical Tree

Mystical Trees, also known as Mystical Seed Trees, serve as warp destinations in both Oracle of Ages and Oracle of Seasons. They can be found throughout Holodrum and Labrynna. Each tree is named for the type of Mystical Seed it bears. The types are Ember Trees, Mystical Trees, Scent Trees, Gale Trees, and Pegasus Trees.

Characteristics
Mystical Trees take centuries to reach maturity from the seedling stage. When fully grown, the tree's foliage mimics its seed in shape. In Oracle of Seasons, each Mystical Tree only produces seeds during a specific season. The Mystery and Gale Trees produce seeds in summer, Scent Trees produce in spring, and Pegasus Trees, in autumn. Oddly enough, Ember Trees produce seeds in winter.

Link merely needs to swipe at the seeds with his sword to harvest seeds from the tree. He cannot obtain any seeds without having first acquired a Seed Satchel. Once harvested, a tree won't produce seeds for a while. With the exception of Ember Seeds—which come with the satchel—Mystical Seeds are first obtained from their respective trees. Afterwards, they can be obtained through other means (killing enemies, lifting jars, cutting grass, etc.). Whenever Link comes across a tree for the first time, it becomes a warp point; Link can use Gale Seeds to travel back to it whenever he pleases.

Oracle of Ages
In Oracle of Ages, there are eight Mystical Trees in total. The majority of them exist in the past and disappear in the present; Mystery Trees and Pegasus Trees become extinct altogether. A couple of trees appear uniquely in the present. The Ember Tree south of Lynna City and the Gale Tree above Zora Village survive through the ages and exist in both the past and the present. In one case, Link gets to plant a Scent Tree in the past on Crescent Island. The Scent Seedling, obtained by completing the Wild Tokay challenge, must be planted in the "tree nursery" on the island. When Link returns to the present, the tree will be fully grown and so he can harvest its Scent Seeds. He can only warp to the tree in the present time period.

After the completion of Skull Dungeon in a Linked Game, an old woman with the Clock Shop Secret appears next to the Ember Tree south of Lynna City. After completing the following dungeon, Crown Dungeon a Subrosian appears next to the Mystery Tree on Rolling Ridge in the past. This character will tell Link the Smith Secret.

Oracle of Seasons
Mystical Trees are less numerous in Oracle of Seasons as there are only six of them in total. There are two Gale Trees; the rest are the only trees of their kind in all of Holodrum. These Mystical Trees differ from their Labrynnian kin in that they each produce seeds during a different season. Scent, Pegasus, and Ember Trees produce seeds in spring, autumn, and winter respectively. Both Mystery and Gale Trees produce seeds in summer.

Trivia

 * Even though they appear to be deciduous, Mystical Trees do not shed their leaves in winter in Oracle of Seasons. In fact, it seems they don't enter any kind of dormancy during the winter season despite the lack of warmth, as Ember Trees produce seeds exclusively in winter.
 * The name "Mystical Seed Tree" (i.e. "Scent Seed Tree," "Mystery Seed Tree," "Ember Seed Tree," etc.) comes from the Official Nintendo Player's Guide by Nintendo Power. "Scent Tree" is the term used by a Tokay in Oracle of Ages, and this is the only instance in both Oracle games when any of the trees are named. The manual also uses the terms "Mystical Tree," "Scent Tree," "Ember Tree," etc.