Glow-in-the-Dark Houseplants Are Finally Real—Here’s the Science, Safety, and Shopping Guide (2025 Deep‑Dive)
Firefly Petunia is Light Bio’s first consumer self-glowing ornament, using a fungal bioluminescence pathway and glowing continuously but dimly, best seen in total darkness. In September 2023, USDA APHIS concluded the modified petunia is unlikely to pose increased plant-pest risk and is not regulated under 7 CFR Part 340. A federal court vacated the 2020 SECURE biotech rule on December 2, 2024, and APHIS updated the CFR in June 2025 while affirming prior determinations remain valid. Lab research in 2024–2025 increased brightness by 10–100× in test plants using newer enzyme sets labeled FBP2/FBP3, suggesting brighter consumer lines are plausible. The