Topics in Subtropics

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Topics in Subtropics Blog
You can subscribe to this  blog with multiple entries per week reflecting what's happening with subtropical crops and upcoming educational events.  Just click on the "Subscribe" button just to the right of this paragraph.  There's also our seasonal quarterly Topics in Subtropics newsletter found at our Ventura, Santa Barbara, San Luis Obispo, Riverside, San Diego, Tulare and Kern Counties Cooperative Extension websites.

Pollinator Plantings Workshop

March 16, 2026
By Ben A Faber
Lockeford Plant Materials CenterSpring Field DayFocus on Pollinator PlantingsApril 15, 2026 – 9:30 - 12pm Location: Lockeford PMC, 21001 N. Elliott Rd., Lockeford, CA 95237A Trip to the…
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Guava Pest Alert

March 4, 2026
By Bodil N Cass
Residential and commercial guava growers in California are asked to be on the lookout for Cardin’s Whitefly (Metaleurodicus cardini, (Back) Hemiptera: Aleyrodidae). This pest is not known to be established in the environment in California; however, it is intercepted on incoming plant shipments at a…
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rain drops

Too Much Rain?

March 4, 2026
By Ben A Faber
What Can Happen with Too Much Rain? Watch that Mulch!!! And sometimes competitive weeds are good.Rain is wonderful stuff. If it comes and washes the accumulated salts of the last several years out of the root zones of citrus and avocado, that's a good thing. But what happens if there is a little too much of…
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avo irrigation

Survey of Avocado Irrigation Practices

March 4, 2026
Efficient irrigation management is essential for sustaining avocado production in California, where orchards are often located on sloping terrain with heterogeneous soils and rely on a combination of district or surface water and groundwater supplies. Avocado trees are highly sensitive to both water stress…
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