^^^ Around here they were/are referred to as Model T garages. Most are gone now though I do know of a few still standing.
It's ironic, (normal ironic, not hipster ironic) that a fair number of newer automobiles would fit perfectly in them.
Yep. My house -- 958 square feet -- has one of those dinky wooden garages. Wooden floor built across cement pilings sunk into the soil, and just room enough to fit a 1941 Dodge sedan and two garbage cans.
I looked through some of the many Home and Garden magazines I have from the 20s to the late 40s, which you'd think would cover the combination of those two spheres but, so far, nada. There's house, and there's garden, but the intersection of that Venn diagram is in the negative. I did find an ad with a picture that included what looked like a snake plant and philodendron sat upon a coffee table, but no actual articles.
I'd forgotten the African Violets... a neighbor had them in a window with a blue grow light. Better than my current neighbor with a purple spotlight aimed at his house.
My mother and grandmother had cuttings from a Christmas cactus (Schlumbergera) that lived FOREVER. Like the Philo., we had spider plants (and little dangling spider plants) (Chlorophytum) that needed little more than sunlight.
Outside, like previously suggested, - privet hedges. Every yard in Chicago had them. We also had huge Catalpa Trees (non-PC: Indian Cigar Tree - apologies to the First Nations).
Snap-dragons (Antirrhinum) were a typical annual - don't see many today. And of course, Peony bushes (Ranunculus).