Wildflower Walk at Lewis Hill Preserve

For one day each year, access is granted to Lewis Hill Preserve—a protected site normally closed to the public and home to rare plants, unique geology, and thriving wildlife. This self-guided hike offers a chance to explore rolling hills alive with seasonal wildflowers, learn from experts stationed along the trail, and experience a place shaped by stewardship and care.

Lewis Hill does not have an address. Click here for directions.

Why Lewis Hill Matters

Lewis Hill is one of the few places where the Striped Adobe Lily, a threatened wildflower, continues to survive. This tiny bloom depends on the preserve’s unusual serpentine soils—rocky, mineral-rich terrain that supports plant and animal life found almost nowhere else. Along the trail, sweeping wildflower displays, burrowing owls, and a variety of bird species reveal how geology and biology intersect in this sensitive habitat.

What to Expect

This is a moderate hike over uneven terrain and natural surfaces. The experience is self-guided, allowing exploration at a personal pace with staffed stations along the route focused on geology, birding, and wildflowers. At the top, kite flying adds a moment of lightness and joy before heading back down.

Come Prepared

• Uneven footing throughout the trail
• Boots or sturdy hiking shoes strongly recommended
• Bring water and sun protection
• Stay on designated trails
• Follow Leave No Trace principles to protect sensitive plant life

Preparation helps ensure a safe experience for both visitors and the land.

RSVP & Attendance Details

Attendance is limited to protect the preserve. RSVP is required. No walk-ups will be accepted.

• Capacity is capped at 250 guests
• Parking is limited; carpooling is strongly encouraged
• Additional parking information will be shared closer to the event

Lewis Hill does not have an address. Click here for directions.

Cost & Donations

This event is free to attend. A minimum donation of $20 per person is recommended to support habitat protection, stewardship, and the continued care of Lewis Hill. Donations will be accepted on-site via cash, check, or card.

Stewardship Comes First

Access to Lewis Hill is possible because protection remains the priority. Visitors are asked to tread lightly, respect posted guidance, and help ensure this rare landscape remains intact for the species that depend on it—and for future generations to experience responsibly.