The seeds are housed inside capsules made of artificial soil: they provide nourishment and moisture to the seed. As the sapling matures, the capsule degrades leaving only the new plant.
The concept is inspired by the legend of American pilot Lieutenant Gale S. Halverson's and his Operation Gum Drop (it probably wasn't called that). After World War II, he started airdropping small handkerchief parachutes of candy for children in Germany.
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