Curseforge Link

Immersive Weathering features a number of new and unique mechanics focused on adding life and immersion to the world. For example; cobblestone becoming mossy when exposed to water or moss, bricks cracking when exposed to extreme heat and time, soot forming on rooves above fires and campfires, iron rusting when exposed to the elements, icicles forming below leaves in the cold, leaves piling below trees, grass blocks growing tall grass and flowers on top of them over time and much more.

The mod also features mechanics designed to make gameplay as convenient as possible, meaning you can change the state of blocks that change and prevent them from changing if you so wish.