En EspaŅol

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
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

Monday - April 04, 2011

From: Austin, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Chlorotic leaves on yaupon in Austin
Answered by: Barbara Medford

QUESTION:

My yaupon holly looks chlorotic, it is 7 years old, I do not feed it, just a little seaweed occasionally. I am a totally organic gardener.

ANSWER:

We looked up "chlorosis" in Botany for Gardeners by Brian Capon (see Bibliography below) and learned that "the characteristic deficiency sympton of magnesium and iron is chlorosis (yellowing of the leaves) due to the curtailment of chlorophyll synthesis. Magnesium is an integral element in chlorophyll molecules; iron must be present during production of the pigment."

From the University of Illinois Extension, this article Focus on Plant Problems has  very good information on the reasons for cholorosis. You need to read the whole article, as it has suggestions for treatment, but we felt the first paragraph probably summarized what you need to be looking for:

"Chlorosis is a yellowing of leaf tissue due to a lack of chlorophyll. Possible causes of chlorosis include poor drainage, damaged roots, compacted roots, high alkalinity, and nutrient deficiencies in the plant. Nutrient deficiencies may occur because there is an insufficient amount in the soil or because the nutrients are unavailable due to a high pH (alkaline soil). Or the nutrients may not be absorbed due to injured roots or poor root growth."

 

More Diseases and Disorders Questions

Fasciation in Houston.
March 29, 2008 - I live in Houston and have had a rather large flower garden for many years. Most of the flowers are just gorgeous but over the last two or three years I have noticed that occasionally some of the flo...
view the full question and answer

Natural lifespan of wild plum trees
May 12, 2008 - We have a small border of Wild Plum Trees in our yard. Every year it seem that one or two of the biggest trees die. Do they have a specific life span? We transplanted the trees/bushes from the panh...
view the full question and answer

Restoration of mistflowers suffering from wet season
June 27, 2007 - I have planted gregg's mistflower in a bed that receives morning sun and afternoon semi-shade. It was beautiful and covered with blooms and butterflies this spring, but suddenly has become brown and ...
view the full question and answer

Nutrient imbalance in Tecoma stans
October 18, 2007 - I have two Tecoma stans on the north-east side of my yard. They have grown very tall (5') but have not bloomed all summer. Last summer they bloomed profusely. Any idea what the problem might be?
view the full question and answer

Problems with spreading juniper in Sturgis, SD
May 25, 2011 - I live in Sturgis, South Dakota and I have two different varieties of Spreading Juniper in the yard as ground cover. They have developed an orange colored fungus that goes dormant in the winter but a...
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