We are currently planning our 2020 trip schedule. Check back soon.

We welcome your input and help. If you would like to suggest a trip, help organize a trip, know of a special place or person or assist in other way please contact us at . These great trips only happen because of great volunteers - like you.



Most field trips are free and open to all, but read the trip outlines for parking/entrance fees or pass requirements and be sure they fit your physical abilities. Bring plenty of water, sunscreen, appropriate trail shoes, a camera, a notepad and lots of enthusiasm. These are CA native plant field trips focused on the interpretation, identification and appreciation of our diverse flora and the ecosystems they support. We learn about the plants, discuss plant communities, plant ecology, invasive plants and especially native plant identification. Past trips are at the end of the list.

Questions, leadership opportunities and suggestions should be sent to .

Trips change. Always check this page after 7 PM the evening before a trip for updates. Rain cancels.

slider Casper’s Wilderness Park – Sun, Mar 24|green|active}

Mar 23, 7 PM UPDATE: All set for tomorrow. Should be spectacular. Great weather too. The specific route will be decided tomorrow morning, based on trail conditions and flowers. 

Casper’s Wilderness Park is the Jewel of the Orange County Park system, including 8,000 acres and a wide array of habitats. This walk will head up the Loskorn Trail to the West Ridge Trail, then back again by way of the Star Rise and Bell Canyon trails for a distance of 3.5 miles. Warning: the Loskorn Trail is steep and narrow with steep drop-offs in places. There will be an optional side trip up the Quail Run Trail to look for Palmer's Grapplinghook (Harpagonella palmeri) on the West Ridge Trail.

Possible wildflowers at this time of year include Clematis pauciflora (Ropevine), Dodecatheon clevelandii (Padre's Shooting Star), Harpagonella palmeri (Palmer's Grapplinghook), Lasthena gracilis (Slender Goldfields), Paeonia californica (California Peony), Caulanthus heteropyllus (San Diego Jewel Flower), Camissoniopsis strigulosa (Sandysoil Suncup), Pseudognaphalium leucocephalum (Sonora Everlasting), and lots of Lupines. Near the top of the Loskorn trail there should be a variety of ferns, bryophytes and Dudleyas. At this time of year open areas may be covered with Calandrinia ciliata (Red Maids). When these flowers open after noon, they form a carpet of red.

Meet at 8 am at the end of Caspers Park road near the windmill. Directions: From 5 freeway, exit Ortega Highway, and go east 8 miles. The entrance to Casper’s is prominently marked on the left. There is a day use fee of $5 per car or free with an OC Parks Pass. Maps and directions are available at the entrance kiosk as well. Wear sturdy shoes, a hat and sunscreen. Bring hiking poles if you use them and plenty of water. Restrooms and water at the trailhead, but not on the trail. Leader: Diane Etchison/Laura Camp.

Physical Difficulty: Moderate, approximately three and a half miles on trails. Bring hat, sunscreen, camera, wildflower book/notepad, water and hiking shoes. Porta-potty at the staging area. Plant Intensity: Moderate. Time: About 3 hours.