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.

Citrus Disease Alerts

August 20, 2026
By Ben A Faber
HLB has been found in an Imperial County commercial orchard and the quarantine area for Sweet Orange Scab has been expanded in the Orange County area
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broad mite leaf damage

Broad Mite in Lemons!!!!!?????

August 13, 2026
By Ben A Faber
Broad Mite in lemons has been episodic, following a pattern of warm, humid summers.This past two years along the coast have been a real  problem, and has been even worse and earlier because of the mild winter. The mite was posing significant problems in Somis as early as this January, when winter cold…
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cover crop

Cover Crops Fall Field Day

August 5, 2026
By Ben A Faber
September 15th from 9:30am - 12:00pm for a field day focused on forages and cover crops. Topics include:Warm Season (C4) low water use grasses for Irrigated Pasture. Theresa Becchetti UCCEAnnual Warm Season Cover crops for grazing. Sarah Light UCCENitrogen production by cover crop components and…
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suckers

Citrus Pruning for All

August 3, 2026
By Ben A Faber
A recent publication from Florida has some really good guidelines and images on citrus pruning: https://ask.ifas.ufl.edu/publication/SS698
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