Tutorial and Installation, How to use Vegetation :

How to use Vegetation with Eevee :

For amazing renders, use an HDRI to create a nice ambience (you can find some for free at HDRI haven).

In Eevee, you can’t generate shadows with an HDRI, so use a Sun light instead, and adjust its intensity to your liking.

For clear shadows on the ground, use a low angle (between 0 and 5°).

In the sun settings, don't forget to activate "ground contact".

In the Eevee settings, also activate Ambient Occlusion and Bloom for a more realistic look.

Also makes sure to activate Screen Space Reflections.

If you want to take your realism even further, add a "volume irradiance" and bake the indirect lighting.

For the final render, don't forget to add a bit of depth of field for background blur. Also, use Filmic Color in Color Management for more realism.

And there you go! You’ll have an amazing scene in Eevee using the Vegetation addon.

Enjoy!