A team of researchers from ETH Zürich and the Universite Paris-Saclay made observations suggesting that bumblebees have strategies to cope with irregular seasonal flowering: when faced with a shortage of pollen, bumblebees actively damaged plant leaves and this behavior resulted in earlier flowering by as much as 30 days.
Nerdfighteria Wiki - The Amazing and Delicate World of Bees
Bumblebees bite plants to make them flower early, surprising scientists
CHAPTER 18
Bumblebees Bite Leaves of Flowerless Plants to Stimulate Earlier Flowering, Biology
Bumble Bee Nibbles Stimulate Plants To Bloom Early
Mar, 2022
Autumn
Pollen-deprived bumblebees bite leaves and may speed up plant blooms
Hole-punching bumble bees urge plants to flower faster – Alison McAfee
Landscaping with Native Plants
An Incredible New Bumble Bee Behavior Was Just Discovered – So Sophisticated, Scientists Cannot Reproduce
Landscaping with Native Plants