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University of California Cooperative Extension Ventura County
669 County Square Drive, Suite 100
Ventura, CA 93003
Phone: 805.645.1451
Fax: 805.645.1474

Office Directory

Office Hours:
Monday - Friday from 9 a.m. to 4 p.m. 

The office will be closed for the following holidays:

March 29 – Ceaser Chavez Day
May 27 – Memorial Day
June 19 – Juneteenth
July 4 - Independence Day

Room Reservation Requests


Landscape Notes

This newsletter is for the people working in the commercial landscape industry.

Issue Articles Type Date Added

Dear Landscape Notes Readers, As part of my UCANR reporting requirements, I must evaluate the impact of my work.

Please fill out this short survey. It will only take a few minutes and is constructed so that you skip parts that don't apply.

I value your input which will be viewed by only me.

The survey is anonymous and your contact information is optional.
Thanks so much.

Jim Downer

Survey Link:
Performance Impact Survey

PDF 1/8/20
Landscape Notes, Volume 28 Issue 2

This is issue contains the Sabbatical Report II, with information about 4 possible cultivars for California and information about the upcoming meeting in Arizona.

PDF 10/4/19
Volume 28, Issue 1

Interim Sabbatical Report

Arid land plants that may have horticultural value in California

Meeting: Trees of the Chiricahua Mountains— Biology, Ecology and Drought Adaptations.  October 2019



PDF 8/13/19
Landscape Notes Volume 27, Issue 3

Caring for Pruning Tools

PDF 12/14/18
Landscape Notes - September 2018 - Vol 27 - No.3 PDF 9/27/18
Landscape Notes Volume 27, Issue 2

You are Invited to Attend the 2018 Chiricahua Rendezvous. 

The Chiricahua Rendezvous is a meeting of arborists, naturalists, and biologists to study trees and their adaptations in the Chiricahua Mountains of South East Arizona.  

The Chiricahuas also offer us a laboratory to examine tree adaptations and natural history up close. The high species diversity, unique land-forms, soils, abundance of insects and animals, and sheer beauty of this part of the American Southwest are unlike anything else in the world.

When: October 8-12, 2018

Limit: 40 attendees

Cost: $475 which includes all meals, lodging and seminars

See attached brochure for details and Rendezvous agenda.

Use this link for quick registration use this link: 2018 Chiricahua Rendezvous

PDF 7/30/18
Landscape Disease Symposium from January, 2018

Landscape Disease Symposium

  • Botryosphaeria Canker of Landscape Trees: an Increasing Disease in Southern California
  • Understanding the Biology of Annulohypoxylon, Biscogniauxia, and Hypoxylon: Saprotting Ascomycete Pathogens of Hardwoods in Southern California
  • Fungi Identified from Failed Stems and Branches of Urban Trees
  • Elucidating "lucidum": Distinguishing the Many Faces of '  Ganoderma lucidum' in the United States
  • Laurel Wilt: an Emerging Threat to the Lauraceae in the United States
  • Tree Disease and Wood Decay as Agents of Environmental and Social Change
  • New to California: Diseases of common Landscape Plants
PDF 6/27/18
Landscape and Plant Pathology Notebook Volume 27, Issue 1
  • Research Rendezvous
  • Pruning Climate Ready Plants
  • First Year Pruning results on Climate Ready Trees in Four locations

Landscape and Plant Pathology Notebook


PDF 5/10/18
Volume 26, Issue 2

Exploring the art and science of pruning.

PDF 3/9/16
Volume 26, Issue 1

This issue contains a pruning survey conducted with Master Gardeners and information about Bot fungi during drought conditions.


PDF 3/2/16
Volume 25, Issue 1 -- September 2013
  • The Effects of Drought on Shade Trees
PDF 9/3/13
Volume 24 No. 1 -- November 2011
  • Why trees die
PDF 11/8/11
Volume 23 No1
  • Landscape Disease Symposium
  • Use of Mulches to Control Weeds in Landscapes
  • Hey Jim is on Facebook
  • Potting Media Studies
  • Hey its Conk Season Keep an eye on your palms!
Volume 22 No3 - November 2009
  • Drought, "water-wise" gardens and saving water in landscapes
Volume 22 No2 - July 2009
  • Establishing Landscape Trees
Volume 22 No1 - July 2009
  • What is wrong with Pygmy Date Palms???
  • Mulch affects on trees
Vol.21 No.1 - January 2008
  • Let the Wet Begin
  • Controlling Landscape Diseases
Vol.20 No.3 - October 2007
  • Deep Planting Kills!
Vol.20 No.2 - October 2007
  • Diagnosing Your Oak Tree: Part II Insects
Vol.20 No.1 - January 2007
  • The Wintersmith Was Here Research Results: Palm Fertility
Vol. 19,No.4 - December 2006
  • Diagnosing Your Oak Tree: Part 1 Diseases
Vol. 19, No. 3 - July 2006
  • Ventura College Offers Horticulture Classes
  • New Thrips Pest Attacks Myoporum
  • Fusarium Wilt Pathogen of Phoenix canariensis is a soil survivor
  • Palm Trunk Decays are Definitely in california
Vol. 19, No.2 - March 2006
  • Some factors about soil that you need to know to understand the biology of the oak tree in California.
Vol. 19, No. 1 - February 2006
  • Palm Research Symposia
  • Snake Oil, Horticultural Myths, Horticultural Urban Legends, and Persuaders in our Industry
Vol 18 No.4 December 2004
  • Ventura College Horticulture Program Provides Useful Spring Classes
  • Palm Tree Management, Part I: selecting the right palm
Vol. 18 No.3 November, 2004
  • Pruning Oak Trees in Southern California
Vol. 18 No.2 October 2004
  • Organic Amendments and Mulches for Palms: Mulching vs. Amending
  • Dendroconos valens: The Red Turpentine Beetle
Vol 18. No.1 - September 2004
  • Catastrophic Tree Damage from Wind
  • What's Up With The Redwoods?
Vol 17. No. 5&6 January 2004
  • Disease Notes: Armillaria Root Rot
Vol 17. No. 4 October 2003
  • Landscape Disease Symposium
  • Pruning to Control Diamond Scale
  • Trunk Injection with Trifloxystrobin and Myclobutanil to Control Powdery Mildew of Coast Live Oak
Vol 17. No. 3 August 2003
  • Ventura Community College Horticulture/Agriculture Classes for the Fall Semester
  • Palm Disease Notes - Diamond Scale
Vol 17. No. 2 July 2003
  • Powdery Oak Mildew - It's Everywhere!
  • Palm Disease Notes--Pink Rot
Vol 17. No. 1 June 2003
  • Landscape Entomology Symposium
  • Palm Disease Note Fusarium Wilt or NOT??
Vol.16 No. 1 June 2002
  • Herbicide Residue in Compost
Vol. XXI No. 21 October 2001
  • Lerp Psyllid News
  • Conk Season
  • Landscape Disease Symposium, 11/21/2001
Vol.14 No.4 - October 1999
  • Landscape Entomology/Disease Symposia
  • Phytophthora: an unseen menace in the landscape
Vol.14 No.3 - June, 1999
  • Coming Attraction
  • A new pest insect of Eucalyptus citriodora
  • Where have all the flowers gone?
  • Roundup--The DDT of the Nineties?
Vol.14 No.2 - Winter 1998-99
  • Another new Psyllid Pest
  • Flux Diseases in Trees
  • Giant Whitefly Hits Ventura
  • Horticulture Courses Offered at Ventura College