Host an Event Volunteer Join Tickets

Support the plant database you love!

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
1 rating

Tuesday - May 21, 2013

From: Spring Branch, TX
Region: Southwest
Topic: Plant Identification, Grasses or Grass-like
Title: Identification of red-topped grass blooming in Comal County
Answered by: Nan Hampton

QUESTION:

I live in Comal County and right now (mid May) there is a beautiful, red topped grass growing along the side of country roads. It is maybe 1 foot tall, and waves in the breeze. Do you know what kind of grass it might be?

ANSWER:

The highest probability is Aristida purpurea (Purple threeawn).  It is truly beautiful and native. 

Another possibility is Bothriochloa ischaemum (King Ranch bluestem), an invasive species native Africa, Asia and Europe that is growing along highways near Austin right now.

 

From the Image Gallery


Purple threeawn
Aristida purpurea

Purple threeawn
Aristida purpurea

Purple threeawn
Aristida purpurea

Purple threeawn
Aristida purpurea

More Grasses or Grass-like Questions

Turf grass for part-time home from Louisville KY
April 28, 2012 - We have a small yard at a remote location with cistern water, and need a turf grass for a yard, clay soil, which I am willing to amend. It will receive sporadic attention as my husband and I do not l...
view the full question and answer

Tolerance to foot traffic for native turf grass
December 16, 2010 - I have read your articles on your mix of three native seeds for turf grass and on other native grasses but am left with a couple of lingering questions. We have about a 600 sq. ft area we want to plan...
view the full question and answer

Replenishing a fallow field in Central Geogia.
February 22, 2010 - I have recently taken a 54 acre field out of cultivation and would like to replenish the soil with native cover plants. There is a slope to a portion of the field that is experiencing some erosion. I...
view the full question and answer

Making a pollinator garden
August 11, 2014 - Hello, I have a ditch right by my house and I want to turn it into a pollinator garden using native plants. My problem is, right now it's so full of weeds that we have to mow those down so soon. For ...
view the full question and answer

Native fescues and sedges for turf in New York
July 25, 2006 - Hello, Came across your contact info while googling and hoped you could help answer a question or direct me to another resource that can. I am looking to redo my entire landscaping with native NY ...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.