Heart Seeds are small coin-like chips that are given by people's Heart Flower after being purified by Precures. They are needed in order to restore the Tree of Hearts, by collecting them inside the Heart Port. The heart seed also help pretty cure transform.
Another kind of Heart Seed is the Pretty Cure Seed, which is a Heart Seed inside the heart which can only be summoned by a fairy from the Tree of Hearts. The Pretty Cure Seed is the mark of a Cure, and by putting it inside the Heart or Shiny Performers, it is possible for those with Pretty Cure Seeds to transform. The Pretty Cure Seeds do not necessarily need to have the same color as the person's Heart Flower's Heart Seed, as Erika's Pretty Cure Seed is dark blue despite her Heart Flower bearing a light blue Heart Seed. An advanced version of the Pretty Cure Seed is the Super Pretty Cure Seed, which is used to retransform Heartcatch Precures into Super Precures. It is also used to enter the Precure Palace.
The Heart Perfume is also capable of holding a normal Heart Seed inside. These Heart Seeds, depending on the colors, will give the users different sub-powers to use. Only three colored Heart Seeds have been seen used within the series: The red Heart Seed speeds up the Cure, the turquoise Heart Seed calms the mind, and the magenta Heart Seed allows one to use her maximum power. These Hearts Seed can be used when transformed and untransformed. The white Heart Seed is seen being used with the Heartcatch Mirages to teleport the girls to the Tree of Hearts in the new eye-catches.
Each episode after a Desertrian is purified, and the Hanakotoba is said, either Chypre or Coffert releases a Heart Seed from the heart flower with an incantation. The Seed is then put in the Heart Pot.
Pretty Cure Seeds: Allows the Precures to tranforms
Blue Heart Seed: Clears worries away.
Red Heart Seed: Speeds up movements.
Magenta Heart Seed: Boosts strength.
White Heart Seed: Teleportation through the Heartcatch Mirage
Light-pink Heart Seed: Powers unknown
Purple Heart Seed: Powers unknown
Golden Heart Seed: Powers unknown
Green Heart Seed: Powers unknown
Super Pretty Cure Seed: Allows the Precures to turn into their super forms.
- MCF: To the Past and Back