RESTORATION / SPRING 2023

If you have recently visited the Ojai Meadows Preserve, you may have noticed some changes in the eucalyptus grove. The grove was impacted by severe storms this winter, resulting in more than 15 eucalyptus trees toppling over. These incidents raised concerns regarding the safety of preserve users. In order to address these concerns, Land Steward Linda Wilkin enlisted the expertise of arborist, Jan C. Scow to conduct a thorough survey of the eucalyptus grove. Scow’s survey findings revealed that out of the 121 eucalyptus trees in the grove, 49 of them exhibited potential safety issues. These 49 trees displayed problems such as leaning, at risk of whole tree failure, and signs of decline that are likely associated with root disease and decay. Some of these trees also showed signs of sulfur fungus (Laetiporus gilbertsonii), a known pathogen associated with eucalyptus tree failure. 

After receiving Scow’s report, we took the next steps to work with biologists, Spencer Seale and San Geete to conduct the proper bird nesting surveys. These surveys confirmed that there were no active bird nests present in the grove. As a result of these findings, we made the decision to remove 27 of the 49 eucalyptus trees for the sake of public safety. The other 22 trees of the 49 were be left standing due to their heritage status and because their risk of falling on the trails is unlikely. 

Removing the 22 eucalyptus trees not only addresses the potential safety hazards for preserve users, but also benefits our local environment and native habitats. Eucalyptus trees are invasive species introduced from Australia, and their adaptation to our local climate creates intense competition with our native oaks and shrubs. Eucalyptus trees consume large amounts of water, outcompete native species, and create a serious fire hazard. Furthermore, eucalyptus leaves secrete oils in the soil that prevent other plants from growing around them, making it difficult for native shrubs and grasses to thrive. These oils are also highly flammable and can contribute to the spread of wildfire. With climate change fueling more severe drought and fires, the characteristics of eucalyptus pose an increasingly serious threat to our community’s climate resilience. 

The recent storms have highlighted the dangers posed by these unhealthy trees. Many of them have been damaged or uprooted by the winds and rain, putting hikers and other preserve users at risk. We removed these trees as a proactive measure to both protect our preserve users, but also provide opportunity for native species to thrive. As we remove invasive species, we are matching this effort by planting hundreds of oak trees and native shrubs just across the path. Removal of these eucalyptus can be seen as a loss, or it can be seen as a commitment to community and climate resilience. 

Vivon Crawford
Restoration Program Director