Blender 2.8 Eevee. Can't find Material Blend mode option I am trying to get alpha leaves in a tree from an older file to work.

All the tutorials say got to Material > Otions > Blend mode. And switch the Material's Blend mode to something other than Opaque.

My problem is that my material options look nothing like any of the tutorials suggest, and I get no Blend option to get my alphas working.

Below is a picture of my shader nodes and what my options look like.

NOTE: when I create the material in a fresh scene I do get the Blend option.
But any material I create in my current scene just looks like the screen shot below.
Is there something I can do to fix my scene ? I'd hate to have to recreate this scene from scratch just to get this working.
Your screen looks like you have set Cycles as Render Engine not Eevee.

When you switch to Eevee render engine in Render Properties Editor ...



... than you will have available Blend mode from properties panel

(Shader Editor > Properties > Options)



Also availaible from Material Properties Editor > Settings > Blend Mode