Rent Shop Volunteer Join

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
1 rating

Tuesday - September 27, 2011

From: Monrovia, CA
Region: California
Topic: Plant Lists, Diseases and Disorders, Drought Tolerant, Privacy Screening, Shrubs
Title: Evergreen privacy hedge resistant to verticillium wilt
Answered by: Nan Hampton

QUESTION:

I am looking for an evergreen, fast-growing privacy hedge (over 6') that is resistant to verticillium wilt and has low water requirements. I live in Monrovia, CA and have to replace hopseed bushes which were affected by wilt. Thank you so much!

ANSWER:

This list, Plants Resistant or Susceptible to Verticillium Wilt, from the University of California-Davis Cooperative Extension Service is very useful in determining what trees/shrubs to avoid and which ones are resistant.  Here are some possibilities for Los Angeles County for shrubs/small trees to form a privacy hedge that are evergreen, verticillium resistant and have low water requirements:

Juniperus californica (California juniper) and here are photos and more information.  All Gymnosperms are resistant to the wilt.

Ceanothus thyrsiflorus (Blue blossom) is fast-growing and requires little water.   All Ceanothus species are wilt resistant.  Here are two others:

Ceanothus impressus (Santa barbara ceanothus) and here is more information.

Ceanothus leucodermis (Chaparral whitethorn) and here is more information.

Heteromeles arbutifolia (Toyon) and here is more information.

Dendromecon rigida (Tree poppy) is not on either list so I can't be sure it is verticillium wilt resistant.  You should inquire at the nursery.  Here is more information.

Morella californica (California wax myrtle) and here are photos and more information.  Again, this is not either the susceptible or resistant list.

 

From the Image Gallery


Blueblossom
Ceanothus thyrsiflorus

Santa barbara ceanothus
Ceanothus impressus

Chaparral whitethorn
Ceanothus leucodermis

Toyon
Heteromeles arbutifolia

More Diseases and Disorders Questions

Salt from water softener affecting roses.
October 12, 2007 - I have a water softener at my well and wonder if an accumulation of salt over time is causing problems for my roses. After several years of doing really well the branches turn brown and eventually die...
view the full question and answer

Transplant shock in Dakota mock vervain
July 23, 2007 - We just planted some Verbena bipinnatifida in our back yard and when we planted it, it had purple flowers on it but now they've all dried up. We live in central Colorado and thought this plant was fa...
view the full question and answer

Red-backed bugs on mountain laurel (Sophoro secundiflora)
May 12, 2010 - I found red-backed bugs (in fact two end-to-end like the east Texas love bugs) on my mountain laurel which has been losing leaves. Are these bugs the culprit?
view the full question and answer

How to treat bark damage on oak tree
November 15, 2011 - I have an oak tree approx. 50 ft., live in austin, texas. the tree has dropped bark about 3-4 ft above ground, in a section of 4 inches by 8 inches, and the tree appears dark where the bark was. is ...
view the full question and answer

Need help with a fungal disease in oak trees in Austin, TX
April 26, 2012 - Two adjacent oak trees in my yard are showing distinct symptoms of Sudden Oak Death. Most notably, the lowest ten feet of their trunks have several bleeding cankers with thick, tarry ooze and no accom...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.