En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Living fence of native plants for Ojai, CA

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.

Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - September 20, 2008

From: Ojai, CA
Region: California
Topic: Compost and Mulch, Transplants, Shrubs, Trees
Title: Living fence of native plants for Ojai, CA
Answered by: Barbara Medford

QUESTION:

I would like to build a "green fence" about 10-15 feet tall. I live in Ojai, CA where we have VERY hot summers and it goes below freezing every winter. The soil does not seem to drain well..it is extremely hard. We have Acacia trees on the South side of our house right now (where we want the green fence) and we plan to take a few out as they have grown erratically. Otherwise the Acacias on our property are thriving. The "green fence" would have partial shade because the two Acacias that we are planning on leaving are probably about 30' tall, BUT there is a chance we may remove them in the future because we heard that they can be problems if too close to houses. I have already installed drip but I prefer drought tolerant plants to conserve on water. We would like this "fence" to become a major source of privacy, to be tolerant in all aspects (bugs, frost, shearing, etc.)and fast growing. It would be nice if it had something edible by humans or even to birds but this is actually last on my list of "musts". Thank you so much for your time.

ANSWER:

Let's address the acacias first, as you may be making the decision to remove some of them. There are two acacias native to California; most of them are native to Texas only, or Texas and New Mexico. The reason for this is that we are already used to having vicious thorns, sometimes hooked spines, that tear at clothes and person. Acacia farnesiana (sweet acacia) can grow to 15', and Acacia greggii (catclaw acacia) is usually a mounded shrub to about 5' tall, with the worst thorns, which are blamed for making it the most despised shrub in the Southwest.  So, while we are glad some of the ones you have are doing well, we certainly wouldn't recommend planting any more, unless you're landscaping Sleeping Beauty's castle.

On to the soil which does not drain well. We are going to suggest shrubs or small trees that will tolerate a clay soil, which is usually the culprit in poor drainage. However, since you really shouldn't attempt to plant your hedge until after the last freeze date for your area in Winter, that will give you time to amend that soil a bit. Digging a long trench where the "fence" is going to go and mixing in compost, leaf mold or some other organic material with the native soil will not only go a long way toward improving the drainage, but should make digging the holes for the plants easier when the time comes. Add more organic material as you plant, and mulch with a shredded hardwood mulch, to shelter the roots from cold and heat, and help hold moisture in. The mulch will continue to decompose and add to the improved texture of the soil. 

We are going to go to our section on Recommended Species, click the map on Southern California and Narrow Our Search on Habit of Shrub and Tree, although we only found one tree of acceptable height, and look for appropriate plants that are adaptable to clay soils. We are a little puzzled about your temperatures going below freezing every Winter, since you are almost on the Pacific Coast and pretty far south, unless you actually are located in some of the mountains above Ojai Valley. We'll take your word for it. We chose only evergreen plants, since you are looking for privacy, summer and winter, and also looked for plants that could take lots of sun but tolerate some shade and not very good, dry soil. Read the webpage that is linked to the plant name, and for more information, you can go down to the bottom of that webpage, and click on a link that will take you to a Google search on that plant. You will then be prepared to make your own decision based on habit, projected height, etc. 

SHRUBS

Arctostaphylos manzanita (whiteleaf manzanita) - 6 to 12', generally branch or fork near ground, pictures

Carpenteria californica (tree anemone) - 4 to 8' 

Ceanothus impressus (Santa Barbara ceanothus) - 6 to 8'

Heteromeles arbutifolia (toyon) - can grow 15 to 20', bright red berries

Juniperus californica (California juniper) - 10 to 15, pictures

Morella californica (California wax myrtle) - densely bushy, 10-25', aromatic leaves, attracts birds, pictures

TREE

Cercocarpus montanus var. glaber (birchleaf mountain mahogany)

When you have made some selections, you can go to our Native Plant Suppliers section, type your town and state in the Enter Search Location box, and you will get a list of native plant nurseries, seed companies and landscape consultants in your general area. 


Carpenteria californica

Ceanothus impressus

Heteromeles arbutifolia

Cercocarpus montanus var. glaber

 

 

 

 

 

More Compost and Mulch Questions

Holding an Acer rubrum in a container for two years
October 10, 2008 - Dear Mr. Smarty Plants, I am thinking about ordering a Red Maple tree that is cultivated from Mount Vernon. I appreciate the historic nature of such a tree. The tree will be shipped to me and is ...
view the full question and answer

Difficulty of watering at drip line of trees from The Woodlands TX
August 18, 2011 - I'm watering my couple dozen native mature trees to make sure they survive this drought and its aftermath..and I'm reading about how to water at the drip line. But..all of my trees' drip lines ext...
view the full question and answer

Transplanting yucca pups from Dallas
September 01, 2010 - Can I transplant Pup Yucca plants off of the main yucca and how do I cut them off?
view the full question and answer

Native water plants for bio-retention pond in North Carolina
July 22, 2009 - I am looking for North Carolina native plants that can take part shade and very wet conditions (bioretention pond environment). Any suggestions?
view the full question and answer

Fungus Spots on Native Bush Honeysuckle
December 03, 2010 - My native bush honeysuckle plants that I have along my back fence have leaves that are turning yellow with spots. It appears to be a type of fungus, but not powdery mildew. Any suggestions as to what ...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center