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UC Master Gardeners of San Mateo & San Francisco Counties

Defensible zones
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Firewise Landscaping: Make Your Home Safer

May 15, 2025
 Fire season is upon us. Despite this year's above average rainfall, lush vegetation will soon dry out, and if not managed properly, can become fuel. Learn how you can make your home safer by creating defensible space around your home. Click here.
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Ceanothus thyrsiflorus in bloom
Article

Now is a Great Time to Prune Ceanothus (California Lilac)

July 26, 2025
By Cathrin Callas
Going by common names such as Blueblossom, California Lilac or Mountain Lilac, it's not surprising that Ceanothus are popular shrubs for many styles of gardens, with spectacular blooms in colors ranging from pale to very deep blue/purple or white. Blooming in late winter or spring, they are valuable early…
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