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Sourgrass Natural Dye Video Tutorial

There’s more to sourgrass than its lip-puckering powers. Dig a little deeper with this natural dye video tutorial.

Sourgrass (Oxalis sp.) is a plant of extremes: children love its strong flavor, pollinators gorge on its abundant nectar, many adore its ability to overwhelm a field when in bloom, and many still detest the invasive qualities of some of its species. Oxalis pes-caprae, native to South Africa, has made itself comfortably at home in California, forming dense mats that outcompete native plant species for light and space.

Whether you love it or can’t stand it, sourgrass has an interesting hidden quality that is both useful and exciting: it dyes fabric a vibrant, neon, highlighter-yellow color. Watch our video tutorial to learn how to play with its pigment and explore more resources below:

Post by Marisa. Explore other resources from The Museum At Your Side.

Lecture: Loma Prieta +30 with Frank Perry

The Loma Prieta Earthquake of October 17, 1989 did over $6 billion in damage to the Monterey Bay and San Francisco Bay areas of central California. This Naturalist Night lecture at the Santa Cruz Museum of Natural History was presented by Capitola Museum Curator Frank Perry on the occasion of the quake’s 30-year anniversary, October 17, 2019, in partnership between the two museums.

This lecture focuses on the geologic setting of the epicenter and phenomena associated with the earthquake. This video was created by Frank, combining an audio recording with the slides used in the talk. The speaker, Frank Perry, is introduced by our Public Programs Manager Marisa Gomez.

Tree Canopy Activity | 4-5 grade

Learn how to explore the habitats around you by measuring tree canopy cover. This activity is adapted from the Museum’s Nature Rangers school program.

Download and print this worksheet (PDF | HTML) to aid in your observations — or make your own!

Explore more resources about trees and plants in our Online Museum Store.

Post by: Natalie