As your crop develops, it will enter different stages of growth. The approximate time your plant takes to grow is dependent on the availability of water and compost. Anytime one or the other is missing, the growth rate grinds to a halt.
Seeded (0-1 Minutes)
Seedling (1 Minute - ~7 In-Game Days; sometimes even a real-life day)
Midling (~5 In-Game Days)
Growthling (~1 to 2 In-Game Day to get to Fruitling)
Fruitling