The Seed of Sprouting is a special type of seed that can be purchased only at the Shop of Wonder.
Plants that are growing adjacent to it will grow twice as fast as they would normally. The more seeds of sprouting that are placed next to one plant, the shorter it will take for that plant to be ready for harvest. The seed of sprouting withers after 4 hours. Once the seed is planted, it appears as a clock with a stem. All growing plants that are under the affect of it will have a clock icon above them.