My oldest observation is of this cacti in Davis, California, in snow, in 2002. The planted Opuntia is not notable, but the snow is - first time it had snowed there in 20 years and not sure it has since then either.
https://www.inaturalist.org/observations/463777
i could probably find older ones next time i am at my parents house if i look through childhood photos. I used to avoid ever looking at them, for um, reasons.
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