Evaluating Herbaceous Perennials for Landscape Performance Under Deficit Irrigation and the Effect on Pollinator Behavior in North-Central Texas
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Ag Science and Natural Resources
Date of Award
Summer 8-18-2025
Abstract
Urban landscapes in northcentral Texas are increasingly challenged by population growth, urbanization, and limited water resources. This study evaluated eleven herbaceous perennial species for growth, drought tolerance, and attractiveness to pollinators. Twelve experimental beds were established in full sunlight conditions, each equipped with a spray irrigation system delivering varying levels of water based on evapotranspiration rates (ET0). Weekly plant assessments measured, leaf chlorophyll content with a SPAD meter, stomatal conductance (gs) and photosystem II (ΦPSII). Bloom number and landscape performance were recorded to determine plant performance under different water regimes. Pollinator observations focused on the presence of honeybees, bumblebees, butterflies, and other important taxa. Results emphasize the value of selecting drought tolerant, pollinator-friendly species to enhance urban sustainability. The top five ornamental plants were found to be S. farinacea ‘Henry Duelberg’, Conoclinum Coelestinum, S. farinacea ‘Augusta Duelberg’, Salvia yangii, and Salvia × sylvestris ‘Mainacht’. These species were visually appealing, attracted a wide range of pollinators, and maintained high flower production at an irrigation rate of ET0 0.0. Findings support integrating these resilient perennials into north Texas urban landscaping to reduce water use while improving ecological value. Selecting species that support pollinators and thrive in low water environments can help mitigate the environmental impacts of urbanization and climate variability, ultimately promoting more sustainable and biodiverse urban spaces in water limited regions like north central Texas.
Advisor
Derald Harp
Subject Categories
Horticulture | Life Sciences | Plant Sciences
Recommended Citation
Trinkle, Lindsey, "Evaluating Herbaceous Perennials for Landscape Performance Under Deficit Irrigation and the Effect on Pollinator Behavior in North-Central Texas" (2025). Electronic Theses & Dissertations. 1301.
https://lair.etamu.edu/etd/1301
