This is the formula to find item grow time accordingly to the rarity

If Rarity is X,

37seconds × (X-1)+ 31seconds+ 12seconds( ((X-2)(X-1)) / 2) + 6seconds ( ((X-3)(X-2)(X-1)) / 6 )

This formula only applies to rarity 2 or more

But I think you guys know Rarity 1 is 37 seconds

Made By BenNgNg, a person EXCELS in Mathematics and growtopia hahaha

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