En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Problems with Green Cloud purple sage in Buda TX

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 - May 30, 2009

From: Buda, TX
Region: Southwest
Topic: Compost and Mulch, Diseases and Disorders, Shrubs
Title: Problems with Green Cloud purple sage in Buda TX
Answered by: Barbara Medford

QUESTION:

I planted the "Green Cloud" variety of purple sage about 3 years ago. Yesterday, I noticed yellowish dots on the underside of the leaves of some plants. Is this harmful? The plants seem to be ok at this time, but I'd like to prevent any problems that might be brewing. I thought about the cotton root rot, but we have been in a drought.....not much water here (however,the area is heavily mulched).

ANSWER:

There are 5 plants in our Native Plant Database with the common name "purple sage;" however, only one of them, Leucophyllum frutescens (Texas barometer bush), is native to Texas, so we will assume that it the one you are asking about. The species of this plant usually has silvery green foliage; "Green Cloud" is a selection which has green leaves and pinkish flowers. Pictures of Green Cloud.

We investigated the possibility of cotton root rot, but understand that this plant is pretty resistant to it. Another thing causing yellowing on leaves is chlorosis, the lack of cholorophyll, which is usually the result of the plant roots being unable to access trace elements, especially iron, in the soil. The key to both these problems is the drainage for the plant. Cotton root rot, for instance, is prevalent in calcareous clay loam, where drainage is poor. Chlorosis can be precipitated by too little drainage as well. So, the first thing you want to do is check that water is not standing on the roots of your purple sage. If water in a shallow depression stands there for more than about 30 minutes, your drainage is poor. You need some compost in the dirt in which the sage is planted, or it should be in a raised bed. Pull some of that mulch back, and work some decomposed matter into the soil as much as possible without damaging the roots. Let the lower branches get some air. Try gradually getting the air circulation improved and getting organic material into the soil, and see if that helps.


Leucophyllum frutescens

Leucophyllum frutescens

 

 

 

More Shrubs Questions

Flowering native plants for Bastrop, TX
February 20, 2009 - What type of flowering plants, trees,and bushes will grow in Bastrop, Texas? I see lots of things around, please help, have never done before.
view the full question and answer

Different kinds of plants living in subarctic areas
March 10, 2008 - What are the different kinds of plants live in the subarctic areas?
view the full question and answer

Foundation plants for Albuquerque.
July 01, 2012 - Hello, I live in Albuquerque. I am looking for some native/xeric low water usage plants for foundation plants for my home. They will be foundation plants for a two story home that has a large ponde...
view the full question and answer

Small area native plant gardening for an apartment
November 14, 2008 - Mr.Smarty, We live in an apartment and are fortunate to have a small area, 5'x5', and so want color! Here in Houston the winters don't freeze much and the summers are HOT. Luckily, we are in the ...
view the full question and answer

Container plants for Yakima WA
May 11, 2013 - My condo complex has purchased large, pottery pots for around our pool. I need to choose low maintenance plants. hopefully something that takes limited water, etc.
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