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 - March 16, 2011

From: Lockhart, TX
Region: Southwest
Topic: Cacti and Succulents
Title: Blue agave with freeze damage in Lockhart TX
Answered by: Barbara Medford

QUESTION:

I recently planted a blue agave plant, and 4 days after I planted it the temperature dropped to 20 degrees at night. The plants are still alive but 75% of the outer limbs turned brown. What do I do with it now?

ANSWER:

Agave tequilana, Blue Agave, is native to Jalisco, Mexico, the world capital of Tequila, which is distilled from the agave. The Lady Bird Johnson Wildflower Center is dedicated to the growth, protection and propagation of plants native not only to North America but to the area in which those plants are being grown. It is hardy from USDA Hardiness Zones 9b to 11, and likes high altitudes. Since it is not native, we do not have it in our Native Plant Database, but have found some information on it for you.

From a previous Mr. Smarty Plants answer, here is an answer about an agave having freeze damage, although not the Blue Agave:

"What to do?  If you want to try to salvage the plant, carefully remove  the dead material so that healthy tissue can regenerate. Usually the first stage is the formation of callus tissue which will give rise to new tissue. Your plant may be too far gone, but with a little patience, you could possibly revive it."

From the Succulent Plant Page website, we extracted this information.

"Agave tequilana  F.A.C. Weber 1902
is perhaps the most important Agave for it is from the emerging flower spike of this plant that Tequila is made. It originates from the state of Tequila in Mexico, where selected clones are grown commercially. This species may be seen bedded out as a large specimen plant in warm climates.
 
The bluish leaves have finely toothed margins. The inflorescence of this specimen was taller than the Princess of Wales Conservatory at RBG Kew."

The major problem is that Lockhart is in USDA Hardiness Zone 8b, as is most of Central Texas, which means that agave might freeze again. Perhaps it will come back, but we would recommend not planting another one in that spot. If you are determined to have an agave, Agave americana (American century plant) is the only native agave hardy to this area.

Pictures of Blue Agave from Google

 

From the Image Gallery


American century plant
Agave americana

American century plant
Agave americana

American century plant
Agave americana

More Cacti and Succulents Questions

Debugging and Preserving Dried Cholla Cactus
January 04, 2014 - Hi. Recently found an intact skeleton of a cholla cactus. I want to Bring it in our house. Are there any dangers associated with this, like bugs inside the "branches?" how would you suggest I prese...
view the full question and answer

Trimming of dead foliage on trunks of yucca in California
December 21, 2008 - There is a Yucca plant in the back yard. I want to know how to get the old foliage that has died off of the trunks, it looks kind of ragged. The foliage is about three feet from the green. Can you ...
view the full question and answer

What variety of Opuntia is best for eating in Boerne, TX.
September 26, 2011 - Which variety of Opuntia, is best for eating the pads and which are the ones best eaten for fruit?
view the full question and answer

Is a yucca going to have a stalk from Sylvania OH
March 15, 2012 - Hi, I was wondering if the stalk on a yucca plant grows back every year after it is cut off? How to tell if it is going to have a stalk because some of my yucca's do not have one? Thank you for your ...
view the full question and answer

Succulents, wildflowers and grasses for Austin
June 09, 2010 - I live on a bluff over Lake Travis and am replanting two beds in front of my driveway with Mexican Feathergrass and Agave. What other grasses or wildflowers could I mix in with the Mexican Feathergra...
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 | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center