Script to specify terrain

[indigo ocean]

is there a way to specify this line of code to make it only work for terrain thats grass
if Target == workspace.Terrain then

[cloud valve]

local pos = Vector3.new()
local ray = workspace:Raycast(pos, Vector3.new(0,-5,0))
    
if ray and ray.Instance == workspace.Terrain and ray.Material == Enum.Material.Grass then
    print("GrassyStuff")
end

[indigo ocean]

this is the full script i am stopid

the soil is not needed cause i disable it