How would you make a plant growing script and make it look like the one in Welcome to Bloxburg?

I'm developing a simulator game with my friend where you plant a plant and sell it for cash. I can't find a script for it and I couldn't think of a way to get it working. If anyone knows how to make it please let me know.

You could write a script to scale, move, and make new parts, or keep the different stages of growth in ServerStorage, and use something like this:

local stages = game.ServerStorage.AppearanceStages

wait(15)
script.Parent.Appearance:Destroy()
local new = stages.Part2:Clone()
new:MoveTo(script.Parent.RootPos.Position)
new.Parent = script.Parent
new.Name = "Appearance"