SpeedTree Shaders
The Universal Render Pipeline uses the SpeedTree system for tree Shaders. To read more about that, read the SpeedTree documentation in the Unity main manual.
When you use SpeedTree Shaders in URP, keep the following in mind:
There is no Global Illumination on trees in URP.
Trees cannot receive shadows in URP.
In URP, you can configure whether lights should be per vertex of per pixel in the URP Asset.