What's That Weed?

Friday, August 15, 2025

9:00 am - 12:00 pm

Picchetti Ranch Preserve

Approximate Total Miles

2.5

French broom, Harding grass, star thistle, Acacia….. The list of non-native, invasive weeds in Midpen preserves goes on and on. But what exactly is a weed? Join Docent Naturalists Frances Reneau and Helena Cohen on a moderately-paced hike along the Zinfandel Trail to learn to identify some common local weeds and discover the attributes that make them so difficult to eradicate.

Where to Meet

Meet at the preserve parking lot on Montebello Road. From the intersection of I-280 and Foothill Expressway, go 3.5 miles southwest (toward the mountains) on Foothill Boulevard/Stevens Canyon Road. Turn right on Montebello Rd. The preserve is 0.5 miles up Montebello Rd. on the left.

Link to Google Map

To ensure your experience on a docent naturalist outing is enjoyable please review these activity guidelines.

For more information about trail characteristics for this event, check out the Midpen Trail Explorer app. To learn more about ADA accommodations for events, or make an inquiry with the ADA coordinator, visit our Accessibility page.

If your activity requires registration, please be sure to cancel your reservation (from your confirmation email) if you are no longer able to attend so others can participate.

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