TIL Oenothera drummondii (beach evening primrose) flowers respond to the specific frequency of flying bee sounds by producing sweeter nectar within 3 minutes

https://onlinelibrary.wiley.com/doi/full/10.1111/ele.13331

https://www.reddit.com/r/todayilearned/comments/15ovnqc/til_oenothera_drummondii_beach_evening_primrose/