Glass wall as wind protection - How high - How does wind behave?

I do not have and cannot have diffusors (German for windbreakers). Not at that spot.

The term sounds technical at first, but it can be any trivial beanpole, any thuja, and any wild combination of all sorts of small stuff that – the more spread out, the better – stands around in the wind path. Even the garden gnome makes its modest contribution to ground winds.
By the way, this applies to any kind of wind, including the audible aka sound, i.e., these windbreakers are virtually floral acoustic constructions.