The University of California Agriculture and Natural Resources addressed the topic of deer-resistant plants in a statement released on Mar. 26, examining whether certain plant species can truly withstand browsing by deer.
This subject is important for gardeners and landowners seeking to protect their landscapes from deer damage, especially as suburban environments have altered food availability for wildlife. The organization notes that while some native California plants have evolved defenses such as toxins or thorns, changing human practices have increased both food resources and protection for deer populations.
The article explains that some plants are toxic to mammals, like oleander, making them more resistant to being eaten. However, many plants labeled as “deer-resistant” may still be consumed when other food is scarce or when deer populations are high. The text states that “when food is scarce and/or deer are numerous, they will nonetheless be eaten.” Deer feeding habits also change with the seasons; late summer and fall typically see higher levels of landscape damage due to limited natural forage.
Gardeners are advised to consult local resources such as UC Cooperative Extension offices or Master Gardeners for region-specific advice on plant selection. The statement suggests a trial-and-error approach: “You might choose a few plants you’re considering, but leave them in their pots and place them in the area where you want to plant. Watch them for a few days to see if deer begin feeding on them.” Physical barriers like wire mesh cylinders may also help protect young shrubs and trees until they mature.
University of California Agriculture and Natural Resources secures funding through public contributions to support its programs according to the official website. It promotes sustainable practices aimed at strengthening resilient ecosystems and economic vitality according to the official website. The organization operates nine research and extension centers representing diverse Californian ecosystems according to the official website.
Additionally, UC Agriculture and Natural Resources manages Cooperative Extension services throughout all 58 counties in California according to the official website, linking university research directly with community needs through educational events—over 33,810 annually—and mobilizing more than 18,420 volunteers according to the official website. Its outreach efforts include workshops designed to promote environmental stewardship across communities statewide according to the official website.
The discussion highlights ongoing efforts by UC Agriculture and Natural Resources not only in researching effective strategies against wildlife impacts but also in delivering science-based information that supports sustainable landscaping across California.