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 Non-Natives Questions

Forget-me-nots choking a spring in Bethlehem PA
June 20, 2013 - Hi Mr. Smarty Plants, I am restoring a native plant area along a spring that feeds directly into our local creek. Right now the spring is becoming choked with forget-me-nots, that I am trying ...
view the full question and answer

Needs Help with Peonies
January 14, 2011 - With the clay soil in North Texas (Frisco) which variety of peony would thrive and become a reliable bloomer? I do work on amending the soil with expanded shell and compost, but ultimately, we still h...
view the full question and answer

Problems with mature Blue Agave in Kenya
December 09, 2012 - I have a mature Agave plant and there is a thin black liquid that looks like oil starting to appear on the leaves. The plant plant seems to be dying (from the bottom up). (The plant is a blue Agave an...
view the full question and answer

Is non-native Tillandsia air plant poisonous to cats?
June 07, 2010 - Are Tillandsia/air plants poisonous to cats? Please help!
view the full question and answer

Is Purple Hopseed poisonous to dogs?
September 03, 2011 - Is the Purple Hopseed plant safe for dogs? We would like to plant a hedge of the purple hopseed at my parents home. They are elderly and have a small (8lb.) dog that they just love so much..I would ...
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