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

Tuesday - February 09, 2010

From: Austin, TX
Region: Southwest
Topic: Non-Natives, Herbs/Forbs
Title: Dietes bicolor(Bicolor Iris) winter-hardiness in Austin
Answered by: Jackie OKeefe

QUESTION:

I have many bi-color irises (dietes bicolor), the freeze in Austin turned them brown. Can I trim them back without harming the plants? If trimming is acceptable, can you give me tips?

ANSWER:

Dietes bicolor(Bicolor Iris) , an African native which is rated to zone 8B (15 to 20F), isn't wintering so well this year in Austin and yours are among many that have frozen to the ground.  This answer was recently given to a similar query. In my central-Austin neighborhood they are sprouting new greenery already, but I would either wait to cut them back, or mulch after doing so to protect the tender new growth until we are past danger of another hard freeze.

 

More Non-Natives Questions

Planting a non-native rose on oak tree in Hutto TX
April 07, 2011 - I would like to consider planting an earth-kind climbing rose on the south side of my 12 ft oak tree. Is this a good idea? Will I create problems?
view the full question and answer

How many Bamboo species are native to North Carolina? one
March 27, 2014 - I would like to know how many bamboo plants are native to North Carolina?
view the full question and answer

Dividing non-native daffodils from Austin
April 15, 2012 - The foliage on my daffodils is lush and healthy, but I have no blooms. Should I divide them?
view the full question and answer

Native or non-native hibiscus for Kansas
August 13, 2005 - I recently purchased a 10" Hibiscus flowering plant and would like to know how to care for it. How much water and sunlight does it need and how long I can expect it to live? It is a beautiful plant a...
view the full question and answer

Freeze problems with non-native weeping willow in Joplin, MO
May 13, 2010 - My weeping willow had leaves forming and a frost hit and now the tree looks like it is dead. Everything else is in bloom and I don't know if the frost killed my tree or if I need to wait to see if it...
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