For a decade I have kept a record of the wild plant on two diverse areas

I had completely forgotten about this until I reread it recently. It's from Aldo Leopolds 'Sand County Almanac' (1949). Neighbourhood ecology at its best and the impetus behind my own weeds in my street surveys. 

[O]n week ends my floristic standard of living is that of the backwoods, while on week days I subsist as best as I can on the flora of university farms, the university campus, and the adjoining suburbs. For a decade I have kept, for a pastime, a record of the wild plant species in first bloom on these two diverse areas:

Species First Blooming in	Suburb and Campus	Backward Farm
April	14	26
May	29	59
June	43	70
July	25	56
August	9	14
September	0	1
Total visual diet	120	226

It is apparent that the backward farmer's eye is nearly twice as well fed as the eye of the university student or businessman. Of course neither sees his flora as yet, so we are confronted by the two alternatives already mentioned: either insure the continued blindness of the populace, or examine the question whether we cannot have both progress and plants.