Napa Master Gardener Column

Welcome to the Napa County UC Master Gardeners Column.  Each week a Master Gardener post an article about a current topic in home gardening.  We hope you enjoy these articles and tell your friends about them.

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Growing plants

Plants Don't Stretch, They Stack

September 11, 2026
By David Shubin, UC Master Gardener of Napa County.   One of the simplest and most useful ideas a gardener can learn is that plants are not people.  That sounds almost too obvious to say. Yet many of our assumptions about plants come directly from our understanding of our own bodies.  We…
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Iris flower close up

Caring for Bearded Irises

September 4, 2026
By Valerie Saribalis-Cole, UC Master Gardener of Napa County.  When I was about eight years old, my great aunt introduced me to one of my favorite flowers: the bearded iris. Not only did she share the cut flowers with me, but she instilled a love of gardening and a fascination with propagating the…
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Garden of native and low water plants

Bringing Back My Garden

August 28, 2026
By D Marlowe, UC Master Gardener of Napa County.  There is a particular kind of guilt that comes from walking past a neglected garden bed. Mine sat for years, half-hidden under weeds, ivy and blackberry vines, with only a few stubborn dianthus reminding me I had once had plans for the place. Each time I…
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Instar nymphs of Spotted lanternfly

Spotted Lanternfly Alert

August 21, 2026
By Lloyd Christopher Jones Jr. Master Gardener.  The spotted lanternfly (Lycorma delicatula) is an invasive agricultural pest from Asia. It was first detected in Berks County, Pennsylvania, in 2014 but may have been stateside a few years prior. It is native to China, India and Vietnam.    …
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Photo of textured leaves of oakleaf hydrangea, showing serrated margins, and with small white blossoms just emerging

Planting a Hillside

August 14, 2026
By Melanie Marshall, UC Master Gardener of Napa County.  If you’re like me, you may look at your landscape every day and imagine how much better it would look without the weeds. The harder question, especially if your property is on a hillside, is what to plant in their place.   I decided to remove…
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