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

Wednesday - July 22, 2009

From: Abilene, TX
Region: Southwest
Topic: Non-Natives, Pests
Title: Why are there gnats in my houseplants?
Answered by: Joe Marcus

QUESTION:

I have flying brown gnats in my house plants. Can you tell me why?

ANSWER:

The focus of research and the extent of expertise of the Lady Bird Johnson Wildflower Center are limited to North American native plant species.  Since few if any native plants are grown indoors, your plants and your question are outside of our purview.

However, we may be able to point you in the right direction for getting a satisfactory answer to your question.  Gnats around houseplants are usually one of a group of insects in the fly family called Fungus Gnats.  Here is an excellent article from South Dakota State University discussing Fungus Gnats, their life history and control.  The article was written for orchid growers, but the same principles apply to all houseplants.

 

More Pests Questions

Is oak leucanium an invasive species in Texas from Laredo TX
April 02, 2013 - Is Parthenolecanium quercifex considered an invasive species in Texas? Does this insect attach itself to redbuds? I spotted and removed from my small 5ft Texas Redbud last year. It seems that it has ...
view the full question and answer

Damage to cedar elm from Austin
August 16, 2013 - We have a cedar elm next to the corner of our house that has been dropping lots and lots of twigs with green leaves over the past 3 weeks, while our other elms have not. These rapidly pile up on the p...
view the full question and answer

Webworm on Texas Mountain Laurel in Texas
September 02, 2015 - I thought my mountain laurel had web worms and I sprayed for them. Now the plant looks like it still has the worms even though none are present. Also, I sprayed with a fungicide because some of the ...
view the full question and answer

Possible maple scale on non-native mophead hydrangeas from Newport RI
August 07, 2013 - I have a mophead hydrangea that has small white cottony tufts under the leaves and on the stems. I believe this is maple scale. Is there a home remedy I can use to rid this disease?
view the full question and answer

Discouraging Poison Ivy
June 27, 2015 - Is there a fern that discourages poison ivy from growing?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center