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

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

Plant identification in Georgia
September 14, 2011 - I saw the same question that I was going to ask about the plant that folds its leaves at dusk, with sparse branches, rapid growth, small yellow flowers and long (whisker-like, but do not appear to be ...
view the full question and answer

A stinging plant in Moultrie, GA?
April 28, 2010 - Mr. Smarty Plants, I was walking along in my lawn in some flip-flops and my foot barely grazed my ankle. As soon as it had happened, I felt this horrible pain, like a million tiny, invisible splinter...
view the full question and answer

Plant ID from Richardson TX
May 24, 2014 - Need to send a pic for id.
view the full question and answer

Plant identification
December 20, 2011 - I am new to Florida and can't find the identification of one of my plants anywhere. It's an unattractive plant that is stick-like, very rubbery - it reminds me of a stick-bug. I have a small one i...
view the full question and answer

Natural location of Ceanothus impressus in California
May 21, 2006 - Where is Ceanothus impressus 'victoria' native? I need as specific as you can. Thanks much.
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