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

Propagating a Magnolia tree from a twig cutting in New Hampshire.
November 02, 2011 - I have a twig cutting from a rare magnolia tree I found on a farm in central New Hampshire. The tree seems to be at least one hundred years old. It was in full bloom in late August and I was told by t...
view the full question and answer

Giant Thistle-Like Plant from Elgin, TX
June 01, 2014 - I have a giant thistle like plant in my field we have been unable to identify. It looks like a milk thistle but it is short..only about a foot tall..stocky...and the flowers are giant..about 6 to 8 i...
view the full question and answer

Plant identification, Oxalis drummondii
October 07, 2009 - All around Austin in the last couple of weeks I've noticed a beautiful lavender flower blooming in dense clumps. I haven't been able to look at them closely because it seems they prefer to be in th...
view the full question and answer

Tentative identification of Ibervillea lindheimeri
June 22, 2007 - I live close to the Center and found a plant in the park near my house I'd like identified. It was a vine with bright red fruit on it. The fruit was about the size of a cherry tomato but was oblong...
view the full question and answer

Plant ID from Beaumont TX
August 13, 2010 - I live in Beaumont Texas and have some trees on the land I hunt that look like a yaupon but put on a small blue berry that the deer devour in December. I have looked and searched the Internet but hav...
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