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

Wednesday - September 01, 2010

From: Spring Branch, TX
Region: Southwest
Topic: Pruning, Watering, Herbs/Forbs
Title: Copper Canyon daisy leaves turning yellow in Spring Branch TX
Answered by: Barbara Medford

QUESTION:

My Copper Canyon daisies have grown well this year but the leaves are turning yellow. Any ideas?

ANSWER:

Tagetes lemmonii, Copper Canyon daisy, does not appear in our Native Plant Database. From other sources, we have learned that it is native to Arizona and Sonora, Mexico. Our database is a work in constant progress, and this plant apparently has not made it there yet.

We found one website Hill Country Native Plants with a little information on it. This USDA Plant Profile on the plant shows it as native only to Arizona. We did find a good article from the Native Plant Society of Texas A marigold for fall gardens

To sum up what we learned about this plant, it needs full sun to thrive, good drainage and an alkaline soil. It is a "day-length" plant, meaning it blooms the most heavily in the shorter days of Fall, and with some blooming in early Spring. 

You did not say if this was the first year for your plant in your garden. If it has grown well in past years, and is not doing as well this year, there must have been some change in the environment of your garden to affect it. If you had it in the ground last Winter, we know that your area had some very abrupt and unusual low temperatures. This plant is really a desert plant, and will freeze back, but ordinarily, if it is cut back, it will return in the Spring. The other point I would like to make is that Spring Branch, close to Houston, really has more East Texas acidic soils than western alkaline soils. And you have more rain than we have, for instance, in Central Texas or West Texas, so if the drainage in your bed is not good, the plant may be objecting to water standing on its roots. 

Pictures of Copper Canyon Daisy from Google. 

 

More Watering Questions

Replacing Drought-Stricken Cedars
January 16, 2012 - Hello, I live in Williamson County on a couple acres. We have several dead cedars as a result of drought; we're reluctant to cut them down because many of them provide a friendly barrier between us...
view the full question and answer

Sycamore leaf snowbell from Pleasanton TX
August 18, 2012 - How do you care for a sycamore leaf snowbell. Does it like sun or part shade? How much water? How often and what should it be fed. How fast or slowly does it grow? Anything you can tell me would be ap...
view the full question and answer

Grouping plants according to water needs
February 05, 2010 - Explain how appropriate design/grouping of plants of the same water needs would make irrigation scheduling easier?
view the full question and answer

Plants for oak shade from Whitney TX
December 24, 2012 - I live in Whitney, Texas and have a number of beautiful Live Oak trees in a portion of my yard providing deep shade. Asian Jasmine grows in about 5 ft circle around them and then nothing! I have walk ...
view the full question and answer

Transplant shock in Texas natives garden
August 20, 2007 - Dear Mr. Smarty Pants, I thought that my new Texas Natives garden was recuperating from ALL the rain. But, suddenly, my Texas Red Bud and the Eve's Necklace next to it have MANY yellow leaves. Is the...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center