Native Plants
![](../_images/smarty_plants.gif)
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
![](../_images/mr_smarty_plants_logo_web_200w.jpg)
rate this answer
![](../_images/star_00.gif)
Thursday - November 21, 2013
From: Las Vegas, NV
Region: Rocky Mountain
Topic: Diseases and Disorders, Soils, Shrubs
Title: Yellowing leaves of Texas Sage (Cenizo) from Las Vegas NV
Answered by: Barbara Medford
QUESTION:
Leaves of Texas Sage are turning yellow. Can you tell me why?ANSWER:
First, we need to define terms. Once again, the Curse of the Common Name has struck. In our Native Plant Database are two very different plants with the common name "Texas Sage."
Leucophyllum frutescens (Cenizo)
We are betting you are concerned with the Cenizo, a lovely blue-gray leaved shrub that is endemic to Texas, growing mostly in West and Central Texas. From our webpage on Salvia texana (Texas sage):
"Salvia texana, at first glance, is very much like Engelmanns sage (Salvia engelmannii), an herbaceous perennial up to one and a half feet tall with purple-blue blooms, but Salvia texana has a longer bloom period and its smaller, darker flowers are topped by unopened green buds. It shares a common name, Texas Sage, with Leucophyllum frutescens, more often known as Cenizo, a very different, much larger shrub. Salvia texana is a denizen of limestone soils from north-central Texas south to northern Mexico."
Neither plant is native to Las Vegas NV, so it may very well be that incorrect growing conditions are causing the problem.
Generally, when leaves turn yellow and it is not the season to do so, it means chlorisis or an absence of some needed nutrient from the soil.
From a previous Mr. Smarty Plants answer on chlorosis:
"Yellowish leaves could indicate chlorosis, or lack of iron being taken up by the plant from the soil. This is often caused by poor drainage and/or dense clay soil, which causes water to stand on the roots. Again, this could be a problem caused by planting, perhaps without any organic material added to hole, or damage to the tiny rootlets that take up water and trace elements, including iron, from the soil."
Follow each plant link above to our webpages on the respective plants, comparing your growing conditions in Nevada with those considered appropriate to each plant. From the growing conditions for Leucophyllum frutescens (Cenizo):
"Humidity and high night temperatures are lethal. Cenizos should not be fertilized or over-watered."
The growing conditions for Salvia texana (Texas sage) shows it is a low water plant and:
"Soil Description: Found in limestone soils of consistencies ranging from sandy to clay and rocky caliche."
From the Image Gallery
More Shrubs Questions
Shade tolerant low shrub for Houston
September 28, 2013 - Please suggest a shade loving shrub that doesn't get more than 3' tall for a foundation planting along a front porch in Houston, TX. I prefer native, drought resistant if possible. No nursery person...
view the full question and answer
Chickasaw Plum suckering potential in Washington DC area
May 11, 2015 - I have planted some chickasaw plums around the border of my property. My property is surrounded by a wooded area, which then opens into a golfcourse.
Is there a chance that my chickasaw plums would...
view the full question and answer
Pruning tips for Texas Mountain Laurel.
October 09, 2011 - Towards the end of May, I planted some Mountain Laurel seeds in pots. They are about six inches high now and starting to branch out. Do I need to trim off the leaves on the main stem below the branche...
view the full question and answer
Wax myrtle problems from Driftwood TX
September 04, 2010 - We planted 27 wax myrtles on the perimeter of our property last year and were diligent about watering them throughout the drought. They are in very rocky soil (we had to use a jackhammer to dig the ho...
view the full question and answer
Non-fruiting Willamette raspberry plant in Wateford CA
May 23, 2013 - I have a 2 year old Willamette Raspberry plant that has many blooms, bees, great growing conditions, very healthy but has never set one fruit. I know about pruning. Any suggestions? It has been bloomi...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |