Because “Accessory Pigments Earrings” would probably give the wrong impression to non-botanists.
Accessory pigments being the other pigments besides green chlorophyll that soak up different wavelengths of energy and transfer them for better photosynthesis. They’re the source of the colors in the fall, since plants tend to break down the key components of chlorophyll and store them for spring.
“Seeds of Blood” takes place during what’s locally called leaf season in North Carolina; the time of year when the forests of the Blue Ridges are changing color, and the hills are alive with tourists.
…Perfect time for mayhem of the magical kind….