Bee Nest Plastic Breaks Down Fast in Tennessee Soil
Researchers say the research-stage finding could inform future plastics, though no timeline for copying the bees' trick has been set.
Updated on Nov. 2, 2026 in Environmental
Researchers reported that the cellophane bee nest plastic breaks down in Tennessee soil much faster than most human-made plastics. The findings, published in Proceedings of the National Academy of Sciences, are a research-stage observation from field-collected nests rather than an available product.
Why it matters
The bees' lining is a biologically made polyester that degrades far faster than the plastics people use, pointing to a natural chemical strategy that engineers may one day copy. The work follows a 1979 report in Science that first documented ground-nesting bees making their own plastic.
Nests were collected from a Tennessee field in March, July, and October of 2023 and February of 2024 and tested over the year. The measured loss of plastic mass in the nest lining is set against a related lab-made plastic that lost only 18 percent of its mass after 280 days of industrial composting, though the study does not establish a direct degradation rate for the bee material in the same conditions.
The players
University of Minnesota
A research university whose scientists took part in the study of bee nest plastic degradation.
University of Tennessee
A public research university whose scientists took part in the field study of bee nests in Tennessee.
Virginia Tech
A research university whose scientists took part in the study of bee nest plastic degradation.
The details
Each female bee digs her own tunnel, 7 to 12 inches deep, and produces a liquid in a gland near her stinger. She spreads that liquid along a nest chamber, where small molecules link into long chains that form the lining. The lining is about three-quarters plastic and one-quarter silk, and it began to degrade after about 4 months, with cracks appearing by 7 months and crumbling by 11 months if handled roughly.
Timeline
1979: Researchers reported in Science that ground-nesting bees make their own plastic.
March 2023: The team collected nests from the same patch.
July 2023: The team collected nests from the same patch.
October 2023: The team collected nests from the same patch.
February 2024: The team collected nests from the same patch.
The Tech Race
The work sits at the intersection of biodegradable materials and polymer chemistry, a field where researchers are seeking plastics that keep their strength while breaking down more readily. It builds on the 1979 Science report that first identified the bees' plastic, and the authors' planned follow-up on the cause of the rapid breakdown will determine whether the trick can be replicated.
The bee plastic is a research finding, and no product or material based on it is available to consumers. Any practical use would depend on engineers successfully copying the bees' chemistry, a step the study does not put on a timeline.
The takeaway
Watch for the authors' follow-up explaining why the bee plastic breaks down so fast, which would show whether the mechanism can be copied. Engineers could keep the strength of polyethylene-like plastics while making them easier to break down if that trick is reproduced.
What happens next
The authors say their next work will investigate why the plastic breaks down so quickly. No date for that follow-up was provided.
Further reading
For more on how natural processes are reshaping the search for less durable plastic, see Environmental coverage.
