Just when you think you knew everything about the Nazis, along comes the German Society for Garden Art and Landscape Culture* with an exhibition on Nazi gardening: Zwischen Jägerzaun und Größenwahn. Freiraumgestaltung in Deutschland 1933–1945. I'll try to translate this directly, so you can get an idea of the turgidity of German gallery-speak: 'Between the Hunters' Fence and Megalomania: Free-space Design in Germany 1933-1945'.
There was apparently even a National Socialist way to design your garden. Take it away, Hans Hasler: 'All culture and thefore all art and its styles -- this truth has now become generally-accepted in Germany -- always emerges and lives from a national and racial essence. The false image of an "international culture", or a "world culture" belongs to the past, at least for us Germans.' (German Garden Art, 1939).
New to me was the controversy swirling around a particular kind of garden fence, the so-called 'Hunters' Fence', made of diagonal wooden slats:
The article assures us that it was long considered the 'essence of Nazi garden design', but apparently the conference has exploded this myth, along with others, such as that Nazis zoos contained mainly 'Germanic' animals, or that Nazi gardens were known for their straight axes and sharp edges. Apparently Germans favored hunters' fences and right angles long before the Nazis, and still do to this day. I'll leave you to work out the implications of this.