Restoring the Oak Woodland: Baker Canyon Habitat Enhancement Project

In Baker Canyon, part of OC Parks’ Irvine Ranch Open Space, an enhancement project led by the Irvine Ranch Conservancy (IRC) revives a once-degraded area. Through the years-long efforts of IRC, the landscape is now thriving with newly planted native oaks, which will gradually return the area to its original oak woodland habitat. This initiative underscores IRC’s mission to restore, protect and enhance urban wildlands.

The 1.16-acre area within Black Star Canyon Wilderness Park near the Baker Canyon Staging Area was previously transformed into a grassland habitat and utilized as an activity camp for visually impaired youth. Non-native eucalyptus trees were planted along the meadow’s edge to provide shade. Over the last few years, IRC has worked with OC Parks to design and implement an enhancement project that will restore coast live oak trees to the meadow. 

Following the removal of eucalyptus trees, IRC staff and volunteers worked to remove non-native vegetation from the project site. Beginning in 2022, approximately 30 coast live oak (Quercus agrifolia) seedlings have been planted annually each winter. The acorns were sourced from mature trees nearby, giving them a greater chance of survival once planted. From there, they were cared for and grew into seedlings at the Augustine Staging Area nursery in OC Parks’ Limestone Canyon before finally being planted at the project site in Baker Canyon. More seedlings are currently growing in preparation for next winter, showcasing how the ongoing project continues to thrive.

To ensure the success of the newly planted oaks, IRC implements protective measures such as plant protectors to deter wildlife, regularly monitoring the seedlings and routine maintenance tasks like watering and mulching. As a result, several coast live oak plants have already grown over four feet in height, reinforcing the project’s success. 

This enhancement project is important as the oaks play a vital role within their ecosystem, providing wildlife habitat, soil stabilization, landscape resilience and improved air quality. Beyond ecological benefits, the project also enhances the visitor experience and serves as an educational resource for the public as they are invited to learn more about coast live oak and participate in this enhancement project. 

IRC actively engages the community by hosting various activities in the area, such as guided hikes and Wilderness Access Days. For those interested in participating, visit letsgooutside.org for details. IRC also hosts monthly stewardship activities so you can get involved in this enhancement project. The next one will be held on June 20: Baker Meadow Stewardship. We look forward to seeing you there!