Bushy Business Mod (1.18.2) introduces a particle effect to the game. Leaves will begin falling from trees as players travel through the forest. These leaves aren’t going to change the gameplay in any way, but they will make the game more immersive. Players will be able to experience the changing seasons through these leaves. The colors of the leaves will change depending on the biomes where they are located. This effect can also be applied to different modded leaves. You could create a totally unique tree with a fitting effect.