Sprout Egg

The Sprout Egg is a limited egg introduced during the Beanstalk Event, and one concrete detail sets the rhythm of using it: it takes 4 hours and 10 minutes to hatch. That timer matters more than it looks. A four-hour incubation means you cannot machine-gun openings the way you can with cheaper instant eggs, so every Sprout Egg slot you commit is effectively a half-day investment per pet.

Because it is tied to the Beanstalk Event rather than the permanent shop, the Sprout Egg's pet pool is themed around that event's climb-and-grow fantasy, and it stopped being obtainable once Beanstalk wrapped. The long hatch window strongly implies the egg is meant to drop meaningfully better pets than a quick common egg, since the game usually pairs longer timers with stronger pools, so the value calculation here is about whether the event pet you want justifies parking incubators for hours at a time.

The practical advice is to run Sprout Eggs continuously in the background during the event: queue one, go farm or sell crops, and collect on the four-hour cadence. Stacking multiple incubators is the only way to beat that timer, and doing so during the limited window is the sole route to its Beanstalk-exclusive lineup.