Topics in Subtropics

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.
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avocado flowers

Avocado A & B Flower Types Revealed

July 31, 2026
By Ben A Faber
Avocado trees have complete flowers, having both male and female parts in the same flower. BUT, the different sex stages appear at different times. Different avocados have different sequences of this sex appearance. DNA analysis shows why.
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Invasive Weed Control in S. CA

July 30, 2026
By Ben A Faber
Chris will cover the biology, spread, and management of several common weeds in Southern California, including invasive annual grasses, mustards, and difficult to control landscape weeds such as perennial grasses
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Cover Crop Resource Guides

July 29, 2026
By Ben A Faber
This guide compiles tools, fact sheets, books, and other resources relevant to Central Coast agriculture and includes descriptions and links
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kaolin spray for sunburn protection

Orchard Heat Manipulation

July 28, 2026
By Ben A Faber
Heatwaves above 95 °F are showing up more often in citrus and avocado growing areas, pushing fruit surface temperatures to the point of damage along with damage to leaves and the canopy. Sunburn is no longer a rare problem: in avocado, for example, repeated hot, clear days can quickly lead to severe…
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soil

Ventura Soil Health Conference

July 28, 2026
By Ben A Faber
We invite researchers, industry professionals, educators, students, and practitioners to submit proposals for oral and poster presentations that advance the science and application of biofumigation and sustainable soil health.
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