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
June 05, 2012 - I have a plant that looks like a lamb ear leaf but with a carnation flower on top. What is it?
view the full question and answer

Does goldenball leadtree (Leucaena retusa) have thorns?
July 26, 2010 - I have a plant that I am told is a native Texas plant, but the person I got it from could not remember its name. They said it was very hardy and drought tolerant. It looks a little like goldenball lea...
view the full question and answer

Plant identification
August 26, 2011 - I have found a small tree like plant that is small and the stem or trunk was thin and the leaves look like fern leaves. I also found a larger one it was thicker and closer to the ground the leaves wer...
view the full question and answer

Identification of cattail look-alike, except red
June 21, 2008 - I would like help identify the wildflowers growing beside the highways in my area so I can plant some at my house. We live in Sherwood Arkansas which is just north of Little Rock.The Highway where ...
view the full question and answer

Plant identification
July 31, 2010 - I have this shrub looking type plant with leaves that smell like lemons. The plant has a very small white flower on it. This shrub shows up in my yard every year in the summer. We are curious as to we...
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