Help! I Have Fungus Gnats
By: Jessie Keith
I’ve been using your organic potting soil for both outdoor and indoor planting for the past 8 months. Over the past 3 months, my house has been inundated by fungus gnats. I have tried everything written in the literature to get rid of them. Yesterday, I ran out of your potting soil and began researching potting soil on the web. While still recommended, I read that many consumers of your product complain of gnats. What should I do? What can you do? Please help. Question from Marilyn or Colorado
Answer: Every top manufacturer of potting soils get fungus gnat complaints. Fungus gnat infestation and management is a cultural matter and not soil dependent. This is because fungus gnats are everywhere soil, algae, fungus and plant material can be found. Once plants are brought indoors, gnat populations explode because most gardeners don’t understand how to stop them or how they enter the home.
Black Gold bagged growing media is manufactured at production facilities under conditions unfavorable to the growth and reproduction of fungus gnats, fungi, and algae. Why? Our mix and manufacturing facility conditions include:
- The use of high-quality Sphagnum peat moss, which is too dry to be conducive for fungus gnat reproduction and algal/fungal growth
- Mix components with low pH levels and nitrogen availability, which prohibit gnat/algal/fungal growth
- Mix compost from piles too hot and dry for fungus gnat reproduction and algal/fungal growth
- Thick, well-sealed bags to maintain mix integrity
Fungus gnats can enter any opened or damaged bag of potting soil or amendment, so keep opened bags well sealed and dry after opening and never buy any bagged soils with open ends or tears! Once you have these gnats, they are pretty easy to manage, if you know what to do.
Managing Fungus Gnats
All potting soils must contain organic matter, be porous, and hold water well for effective root growth; any soil that’s moist and high in organic matter will attract fungus gnats. But, don’t despair! Follow the simple cultural guidelines in this video, and you can easily stop fungus gnats from breeding in your plant pots.
Black Gold Horticulturist
This site may contain content (including images and articles) as well as advice, opinions and statements presented by third parties. Sun Gro does not review these materials for accuracy or reliability and does not endorse the advice, opinions, or statements that may be contained in them. Sun Gro also does not review the materials to determine if they infringe the copyright or other rights of others. These materials are available only for informational purposes and are presented “as is” without warranty of any kind, express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement. Reliance upon any such opinion, advice, statement or other information is at your own risk. In no event shall Sun Gro Horticulture Distribution, Inc. or any of its affiliates be liable to you for any inaccuracy, error, omission, fact, infringement and the like, resulting from your use of these materials, regardless of cause, or for any damages resulting there from.