The Ellwood Mesa Open Space is home to several species of wildlife, including the Monarch Butterfly which makes its winter home in the Eucalyptus groves that span the interior boundaries of the Mesa. Begining in October each year, Monarch Butterflies migrate from their summer homes and congregate in massive colonies that roost in the canopy of the area known as the Ellwood Main Monarch Aggregation Site.
The links below provide additional information about how to get to the Grove, where to view butterflies and basic information about the Monarch Butterfly lifecycles.
Map to Monarch Butterfly Preserve
Monarch Viewing Areas
Monarch Magic - Butterfly Lifecycles
Ellwood Main Monarch Aggregation Site Grove Rules
The grove is a wondrous place. To ensure the safety of the Monarchs and enjoyment of the public, we ask that visitors to the grove please observe the following rules:
• Always stay on trails and roads.
• Stay out of the roped off areas.
• Do not touch or harass the butterflies.
• Avoid loud noises.
• Dogs must be on a leash.
• No bicycles, horses, or motorized vehicles in the grove.
• Please take out your trash.
• When entering or exiting the grove please avoid Monarchs which may be "puddling" in the surrounding areas.
Thank you for your cooperation and enjoy the Grove!