PETALUMA: Learn about sudden oak death

Sonoma County’s stands of oak trees continue to be threatened by sudden oak death. Learn the latest research about this deadly pathogen, as well as the symptoms, risk plants and treatments to help stem the damage of SOD during a free workshop Thursday put on by the Sonoma County Master Gardeners. 6 to 8 p.m. Petaluma Seed Bank, 199 N. Petaluma Blvd. For more information, visit sonomamastergardeners.org.

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WINDSOR: Composting workshop

Composting is the single best thing you can do for your garden. Master Gardener Lyle Bullock will tell you why and show you how to produce your own compost to have healthier plants during a free workshop March 4 at the Windsor Library, 9291 Old Redwood Highway, Building 100, Windsor. sonomamastergardeners.org.

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SONOMA: Rose-pruning workshop

Master Gardener Jim Lang will offer tips on the best tools for pruning as well as demonstrate best pruning techniques during a free rose-trimming workshop today at the Sonoma Valley Regional Library, 755 W. Napa St., 10:30 a.m. to 12:30 p.m. sonomamastergardeners.org.

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ROHNERT PARK: Learn to prune trees

Master Gardener Fred Revetria will give a free workshop today, Feb. 25, on how to prune your trees for best growth and production for years to come.

The workshop will be from 10:30 a.m. to 12:30 p.m. at the Rohnert Park/Cotati Library, 6250 Lynne Conde Way. For more information, visit sonomamastergardeners.org.

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SANTA ROSA: Butterfly workshop

Monarchs are valuable pollinators and they need help from home gardeners. Learn what you can do for them during a free workshop March 4 at the Rincon Valley Library in Santa Rosa. Master Gardener Suzanne Clarke will discuss feeding, anatomy, life cycle, diet and distribution of monarch populations. 10:30 a.m. to 12:30 p.m. 6959 Montecito Blvd. sonomamastergardeners.org.

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SEBASTOPOL: Sustainability talk

Why is everyone talking about sustainability, and why is it important for the future?

Master Gardener Kim Pearson will answer those questions, as well as offer tips on how to make your own garden more sustainable without sacrificing beauty during a free talk March 4 at the Sebastopol Library, 7140 Bodega Ave., Sebastopol.

Compiled by Meg McConahey. Direct Home and Garden news to meg.mcconahey@pressdemocrat.com or call 707-521-5204. Please submit items at least three weeks in advance of an event.