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Updated: Sep 7, 2025

Field Experiments of Pollination Ecology: The Case of Lycoris sanguinea var. sanguinea
Published on: November 25, 2016
Complex floral traits shape pollinator attraction to ornamental plants.
E Erickson1, R R Junker2,3, J G Ali1
1Department of Entomology, Center for Pollinator Research, Huck Institutes of the Life Sciences, Pennsylvania State University, ASI Building University Park, PA, USA.
Ornamental plant traits influence pollinator attraction, with some cultivars broadening visitor communities and others excluding specific bee species. This research highlights how human-selected traits impact pollinator diversity in managed landscapes.
Area of Science:
- Ecology
- Plant Science
- Entomology
Background:
- Ornamental plants in managed greenspaces aim to support pollinators.
- Pollinator selection in nature favors convergent floral traits, unlike human-driven artificial selection in ornamental cultivars.
- The impact of ornamental cultivar variation on pollinator attraction is not well understood.
Purpose of the Study:
- To investigate how variation in floral visual, chemical, and nutritional traits of ornamental plant cultivars affects pollinator attraction and visitation.
- To determine the influence of these traits on different pollinator taxonomic groups and bee species.
Main Methods:
- Field and behavioral assays were conducted.
- Twenty-five cultivars from five herbaceous perennial ornamental plant genera were studied.
- Floral visual, chemical, and nutritional traits were evaluated for their impact on pollinator visitation.
Main Results:
- Cultivars attracted a wide range of pollinators despite phenotypic variation.
- Attraction at the insect order level aligned with pollination syndrome hypotheses.
- At the bee species level, trait influence varied, with some phenotypes broadening the visitor community and others excluding certain bee species.
Conclusions:
- Pollinator choice is mediated by multimodal floral signals, including traits selected during cultivar development.
- Cultivar trait variation can limit pollinator communities by excluding species but may also support generalist pollinators.
- Understanding these interactions is crucial for managing pollinator diversity in urban and managed landscapes.
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