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UC Master Gardener Program of Contra Costa County

Winter 2026 NtGB

"The color of springtime is in the flowers; the color of winter is in the imagination." 
— Terri Guillemets

A new year invites fresh intentions and renewed curiosity. Winter, often seen as a quieter season in the garden, is actually a wonderful time to deepen our skills and expand our understanding. In this issue, you’ll find practical and inspiring guidance on winter-perfect techniques such as espalier, rose pruning, grafting, and pruning native plants — all ways to grow as gardeners while our landscapes rest.

Beyond the garden, we’re focusing on critical home maintenance: protecting your outdoor living spaces from winter’s toll and securing the rainwater your landscape will depend on later. Plus, for a bit of lasting cheer, learn the secrets to keeping your holiday poinsettia healthy well into the new year.

As always, being a UC Master Gardener is about more than tending our own gardens. It’s about caring for our communities. We’re proud to share how our collective efforts continue to make a difference in addressing food insecurity, reminding us that every skill we learn and every plant we nurture can have a wider impact.

For those looking to dive even deeper, our UC Master Gardener website offers an extensive library of additional resources and guides to support your winter projects.

We hope this winter issue informs, inspires, and invites you to read on.

Hedwig Van Den Broeck and Robin Mitchell, editors - Contact Us

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Espalier_UCANR_1440by620
UC Master Gardener Program of Contra Costa County: Article

Putting the "YAY" in Espalier

December 27, 2025
By Jillian Armstrong
Whether you are a newly budding gardener or a vine-ripened horticulturalist, espalier (pronounced “es-PAL-yer” or “es-pal-YAY”) is an artistic and skill-building method of growing plants that can be incorporated into your home garden. The word "espalier" refers to the technique of training and pruning a…
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Pink Roses_Courtesy Lisa Phillips
UC Master Gardener Program of Contra Costa County: Article

Easy Guide to Hard Pruning Roses this Winter

December 27, 2025
By Lisa Phillips
 Roses bring a stunning beauty to the spring garden, and who can’t resist sniffing those first few blooms? The key to abundant blooms this spring is hard pruning your roses during winter.  In Contra Costa County, the best time to hard prune roses is January to February, after the last frost.Why do…
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Grafting no text UCANR
UC Master Gardener Program of Contra Costa County: Article

Tree Grafting for Garden Fun

December 22, 2025
By David George
Plant and tree grafting is an ancient and worldwide practice. I was fascinated on a recent trip to the Mekong Delta in Vietnam by a demonstration of jackfruit tree grafting by a family nursery supplying trees to nearby Saigon markets. What struck me most about this demonstration, half a planet away from…
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Rainwater Runoff_Courtesy Gary Kernick
UC Master Gardener Program of Contra Costa County: Article

Rainwater Harvesting for the Win — Part II

December 22, 2025
By Liz Rottger
 Water is the very definition of life. It is the source of all life on Earth; it is what we search for on other planets to prove the possibility of life there. Without water, everything dies. Extreme heat and drought are the enemies of all life.But we are running short on water. Droughts are becoming…
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Winterizing Patios and Decks_Shutterstock
UC Master Gardener Program of Contra Costa County: Article

Winterizing Patio Container Gardens for Small Spaces Gardening

December 21, 2025
By David George
With winter’s chill in the air, it’s essential to prepare your container patio garden to withstand cold weather. Start by moving the most sensitive, smaller plants inside the house or in wind-sheltered wall nooks to take advantage of the extra warmth. Insulate larger pots by wrapping them with burlap, bubble…
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UC Master Gardener Program of Contra Costa County: Article

Poinsettia (Euphorbia pulcherrima)

December 22, 2025
By Robin Mitchell
by Cheryl Schmidt Who doesn’t love this vibrant plant in December? It comes from Mexico and is pronounced "poin-set-te-uh."  It loves warmer weather, between 65 °F and 70 °F. What do you do with these plants after the holidays? Many throw them away, but you don’t have to. You could keep it as…
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Food Donations_Photo Courtesy Greg Letts
UC Master Gardener Program of Contra Costa County: Article

Fresh Produce, Real Impact: Fighting Food Insecurity in Contra Costa County

December 22, 2025
By Linda Weissman
Every Wednesday morning, something extraordinary happens. Nearly 300 pounds of sun-warmed tomatoes, crisp lettuce, and freshly picked herbs travel just a few short miles from soil to table—not to a farmers market or grocery store, but directly into the hands of local families who depend on this harvest to…
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