En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Identity of very tall plants in Austin, 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

Monday - August 13, 2012

From: Austin, TX
Region: Southwest
Topic: Plant Identification
Title: Identity of very tall plants in Austin, TX
Answered by: Nan Hampton

QUESTION:

I have these huge tall plants. They don't seem to want to bloom and they are shading out my other natives. They get very tall. 10 feet or so. What is it?

ANSWER:

Well, a little more about the plants would be a great help in identifying them; for instance, information about leaf shape, leaf arrangement on the stem, plant shape, whether the plants are growing in a flower bed, in a field, etc.  However, knowing what happens to be growing around Austin right now and can grow quickly into a tall plant in one season, I'm placing my bet on:

 Ambrosia trifida var. texana (Giant ragweed)

Just in case that's not your plant, another possibility would be:  Baccharis neglecta (False willow)

If neither of these is the plant that you are seeing, take photos and then visit our Plant Identification page to find links to plant identification forums that accept photos of plants for identification.

 

 

From the Image Gallery


Texan great ragweed
Ambrosia trifida var. texana

Texan great ragweed
Ambrosia trifida var. texana

Texan great ragweed
Ambrosia trifida var. texana

Texan great ragweed
Ambrosia trifida var. texana

False willow
Baccharis neglecta

False willow
Baccharis neglecta

More Plant Identification Questions

Identity of a plant at UGA Trial Gardens 15 years ago
August 14, 2012 - Looking to identify a plant that was in UGA trial gardens about 15 years ago, large plant with purple flowers, fuzzy leaves like a lambs ear. Thought it started with a Thiobana or something like that
view the full question and answer

Looking for rattlesnake flower
April 22, 2008 - I taught school for many years. The students and I identified wildflowers. I had one I call Rattlesnake Flower. It was small and had a little blue flower. On the leaves were little seed cases that...
view the full question and answer

Plant identification
June 27, 2011 - I have a plant my Dad had found years ago. Last of April a stem with bulb shaped bottom. May 6-stem opened and folded back exposing spotted inside of leaf. Bottom had yellow pollen? and green stem 2+ ...
view the full question and answer

Possible gourd vine growing in backyard in Camden, TN.
July 17, 2012 - I have a long green vine growing in my backyard. It's got green bulbs the size of kiwi on it and they're filled with white seeds. I would appreciate it if you guys could tell me what it is! Thanks!
view the full question and answer

Help with plant ID
September 01, 2004 - I found this plant alongside the road in a field in North Dallas. The dirt was fairly dry, and image is attached.
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