UC ANR is committed to providing an accessible and inclusive web experience for all users. If you encounter an accessibility barrier or need content in an alternative or remediated accessible format, please contact anraccessibility@ucanr.edu.

Ongoing research

A happy gardener's hands in the soil. John Ober

Find Some Dirt!

February 23, 2026

Dirt is made up of four things: minerals (from decomposed rock), air, water, and organic matter. The organic material originates from living organisms (or stuff that was once alive), and a single teaspoon of soil may contain as many as 4 billion bacteria, 1 million fungi, 20 million actinomycetes and 300,000…

Scaptomyza flava in The Netherlands. (Photo by Dick Belgers, Wikipedia)

Diet Detoxification in Insects

February 23, 2026

By Kathy Keatley Garvey

An evolutionary ecologist who studies the impacts of a plant diet on insects and their microbiomes, will discuss her research at the UC Davis Department of Entomology and Nematology seminar on Wednesday, Feb. 25. Evolutionary ecologist and UC Davis alumna Jessica M. Aguilar, a National Science…

UC Master Gardeners • Napa County: Event

October Tree Walk for 2026

Oct 11, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

UC Master Gardeners • Napa County: Event

September Tree Walk for 2026

Sep 4, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

UC Master Gardeners • Napa County: Event

August Tree Walk for 2026

Aug 7, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

UC Master Gardeners • Napa County: Event

July Tree Walk for 2026

Jul 10, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

Fuller Park Tree Walk

UC Master Gardeners • Napa County: Event

June Tree Walk for 2026

Jun 14, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

Fuller Park Trees

UC Master Gardeners • Napa County: Event

May Tree Walk for 2026

May 8, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

UC Master Gardeners • Napa County: Event

April Tree Walk for 2026

Apr 12, 2026

Take a guided walk through the historic Fuller Park with a UC Master Gardener to discover some of the many exotic and native trees there. Historic Fuller Park is an arboretum of many exotic and native trees that have been planted over the last 120 years. Please join a UC Master Gardener on a 1 1/2 hour…

UC Master Gardeners • Napa County

Ground-level view of a grape harvest scene with scissors and bags of harvested grapes

Can a simple spray protect grapes from wildfire smoke?

February 23, 2026

By Emily C. Dooley

Smoke from wildfires can alter grapes and affect the taste and sensory experience of wine. Researchers are applying a calcium spray to grapes to see if the treatment can protect the fruit from smoke exposure.