En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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 Pruning Questions

Late winter pruning of native Texas Sage
January 27, 2005 - I have several Texas Sage bushes that have started to get very woody and have growth only on the top. This seems to have led to a definite listing to one side. Should I trim these to the ground or...
view the full question and answer

Failure of Bald Cypress to fully leaf out
April 14, 2008 - My family just moved to a house in Burnet County, about 7 miles south of Bertram, close to the Balcones Canyonlands NWR, with very rocky limestone soil. We bought several trees last fall, including a ...
view the full question and answer

Yaupon sprouts from Bennettsville SC
May 29, 2013 - I have Yaupons in a flower bed and they have too many shoots to pull up, can I spray them with roundup and not kill the bush and what strength should I use?
view the full question and answer

How do I prepare blackfoot daisies for winter in Austin, TX
October 19, 2010 - I have blackfoot daisies in my garden that have bloomed all summer. They are cascading out of the bed onto my lawn/grass. They have been so beautiful that I hate to cut them back. How do I prepare t...
view the full question and answer

Reducing the Height of a Redbud Tree
January 23, 2016 - We have a very large, about 15-year old, Redbud tree that is growing so tall it's obstructing our view of the river. How and when can we prune this tree back so it does not hurt the tree.
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center