Explore Plants

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
    
 

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

Tuesday - September 20, 2011

From: Austin, TX
Region: Southwest
Topic: Plant Lists, Trees
Title: Trees suited for rocky, caliche soil of Central Texas
Answered by: Guy Thompson

QUESTION:

I need to replace aging ashes. I have planted 2 Monterey oaks, but I would like to know what else I could plant whose roots will grow well in NW Austin caliche, rocky soil? Thank you.

ANSWER:

There is a wide variety of native trees suitable for your soil.  Let me begin with large trees, mostly oaks.  The most commonly found oaks in your area are Quercus fusiformis (Escarpment live oak) and Quercus buckleyi (Texas red oak).  The former is evergreen and the latter deciduous.  Both grow into large, handsome trees, but they are susceptible to attack by oak wilt.  Oak species that are resistant to oak wilt include Quercus stellata (Post oak), Quercus macrocarpa (Bur oak), and Quercus muehlenbergii (Chinkapin oak). Quercus laceyi (Lacey oak) grows into a medium sized tree in your area.  Ulmus crassifolia (Cedar elm) is also popular in the Austin area and develops yellow-orange leaves in autumn.

Smaller trees worth considering include Cercis canadensis var. texensis (Texas redbud), Sophora secundiflora (Texas mountain laurel), Prunus mexicana (Mexican plum), and Chilopsis linearis (Desert willow).  Except for Desert willow, which needs full sun, the others are generally understory trees that thrive in partial shade but can take full sun.

Check out the characteristics of the recommended trees by clicking on the underlined names.  Note that some grow more slowly than others, if this is a consideration. Attached below are sample images of the trees I mentioned.

 

 

From the Image Gallery


Escarpment live oak
Quercus fusiformis

Texas red oak
Quercus buckleyi

Texas mountain laurel
Sophora secundiflora

Mexican plum
Prunus mexicana

Desert willow
Chilopsis linearis

More Trees Questions

Possible identification of Physocarpus opulifolius
June 11, 2007 - Can you please tell me what kind of tree has a maple leaf and a white snowball flower?The young and very small tree was already here when i bought my home,it stands only 7 feet tall with a 2 inch t...
view the full question and answer

Wildlife and bird friendly hedgerow for Chicago suburb
November 30, 2013 - Want to plant a wildlife/bird friendly hedgerow in suburban Chicago. Looking for a recommended mix of understory trees as well a shrubs and grasses. Site is part shade with average to wet soil and tr...
view the full question and answer

Problems with a Monterey Oak in Austin, TX.
November 12, 2010 - I have a large Monterey Oak, planted last year that has not gotten any fuller. Do I need to fertilize and if so, when?
view the full question and answer

Small to medium specimen native tree for Texas Hill Country
August 20, 2004 - Can you recommend a small to med. 'specimen' tree to plant near our patio? Full sun, drought tolerant, interesting during different seasons. Thought about Blanco Crabapple, Rusty Blackhaw, Smoke Tr...
view the full question and answer

Transplanting Colorado blue spruce in Indiana
August 16, 2005 - I live in Indiana. I have a Colorado blue spruce that I would like to transplant to a different part of my yard. What is the best time of year to transplant it? It is only about two foot tall.
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.