Subdue Maxx Fungicide

4.5 out of 5 stars 3 Reviews | 21 Q&A

Subdue Maxx Fungicide
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Average Rating

4.5 out of 5 stars Rating: 4.3

3 Reviews | 21 Q&A

Product Overview

Subdue Maxx Fungicide works systemically on ornamentals; nursery grown non-bearing citrus; turf; nursery and plantation grown conifers; Christmas trees; and nursery grown non-bearing deciduous nut and fruit trees. Subdue Maxx Fungicide is formulated as a microemulsion concentrate that controls Pythium blight. Subdue Maxx Fungicide is odorless and is stable and compatible when tank mixed.

Features and Specs

Active Ingredient Mefenoxam 22%
Target pests Damping off, root and stem diseases caused by Pythium and Phytophthora spp., and foliar diseases such as downy mildew and foliar diseases caused by Phytophthora spp. including Phytophthora ramorum
* See label for complete list
For use in Conifers, Non-bearing Citrus, Non-bearing deciduous Fruits and Nuts, Ornamentals and Turf
* See label for complete list
Application * See label for complete application instructions
Pet safe Yes, if used as directed on Label
Formulation Professional Product
Group 4 Fungicide
Shipping Weight 9.80 lbs
Manufacturer Syngenta (Mfg. Number: 53195)
EPA Registration 100-796


Subdue MAXX controls diseases on ornamental plants; ornamental bulb, corm, and tuber plants; conifers and conifer nurseries; Christmas trees and Christmas tree plantations; forest plantations; forest nurseries; and non-bearing fruit, citrus and nut trees grown in greenhouses and nurseries (including field- and container-grown plants grown outdoors and in shade houses, lath houses and other production sites and structures), retail nurseries, residential and commercial landscapes, and interior plantscape ornamentals. It also controls of diseases for vegetable transplants grown for retail sale to consumers and diseases on turf.

  • Microemulsion concentrate for easy mixing and less equipment wear
  • Zero hour re-entry
  • Approved for a broad variety of uses
  • Proven control of Pythium and Phytophthera
5 stars   1
4 stars   2
3 stars   0
2 stars   0
1 star   0
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  • 4 of 5 Stars

    Works great

    By Ken on 02/06/2015

    Not a fan of having to use fungicide but root rot is no fun either. If u can't get rid of it organically then subdue is the one.

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    17 of 19 people found this review helpful

  • 4 of 5 Stars


    By Billy on 09/07/2016

    A great product. A little goes a LONG way!

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    9 of 10 people found this review helpful

  • 5 of 5 Stars

    Wow! Saved my Jap Blueberry tree!

    By Amber on 06/21/2020

    Fantastic product, worked as directed and saved my Japanese blueberry tree. I had extreme leaf drop and branch die back due to fungus in the soil. After four weeks my tree is lush and flourishing.

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    3 of 3 people found this review helpful

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Questions & Answers

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What is the shelf life of the remaining Subdue MAXX Fungicide?

I only will be using about 5 Oz to treat my lawn. How long is the remaining Subdue in the bottle good for? Years?


Subdue MAXX Fungicide would have a 3-5 year shelf life if stored at room temperature with no extreme heat or cold, and no moisture got into the bottle.

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24 of 25 people found this answer helpful

Are there any products that will treat established pythium blight on my lawn?

Would aeration be effective at this point or would it just spread the fungus? Definitely pythium as I've seen the cottony, weblike growth in the early morning.


Here are a few tips for getting rid of Pythium Blight:

  • Avoid mowing wet, infected turf where mycelium is present to avoid spreading spores with the mower blades
  • Reduce thatch and improve drainage with core aeration.
  • Increase air circulation and reduce the amount of shade which will limit the amount of time of foliar
  • Non frequent deep watering is better verses frequent shallow watering
  • Do not water at night.
  • Apply Subdue Maxx for chemical treatment

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8 of 9 people found this answer helpful

When is the best time to treat with Subdue MAXX Fungicide, and how often do I need to re-apply it?

Soil treatment for phytophhora in forsythia hedge


Subdue MAXX Fungicide is not labled for a soil treatment when treating for phytophthora. Per the product label it should be applied as a foliar treatment only. Also this would not be a product that we would recommend for that either as you would have to use such a miniscule amount when treating hedges as the label states to use it in 100 gallons of water. To be able to break that down would not be worth using. 

You could use Monterey Agri-Fos Fungicide. It is labeled for a soil drench at a rate of 2 to 4 tsp per gallon of water, and you would apply 1 gallon per sq yard. Follow the application with irrigation to get the product down to the roots of the plant. You can do repeat applications at 14-21 day intervals. 

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7 of 9 people found this answer helpful

What affect Subdue MAXX Fungicide & how long will it take to get blooms after application
Subdue MAXX Fungicide depending on what you are treating for can take 1-2months to translocate through the plant. Please review the product label for the application table. 

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6 of 7 people found this answer helpful

How many oz of Subdue Maxx per gallon of water through a tank sprayer applied to Bluegrass and Perennial Rye?

I have had a disease problem over the last several years in the same areas of my home turf grass. I want to apply as a preventive measure. Also how many applications of Subdue Max would be advisable?


Per the product label of Subdue Maxx Fungicide: You would use 0.50 – 1.0 fl oz per 1,000 sq ft in 1-5 gallons of water.  The amount of water is not set as it is just the carrier and will be however much it takes you to cover that area.  For best efficacy, 1/2 inch irrigation or rainfall is required within 24 hours after application. Within the rate range given for turf, use the lower rate for the shortest interval listed and the higher specifi ed rate for the longest interval. Under severe disease conditions, use the specifi ed highest rate and shortest interval.  Please refer to the product label for complete instructions though depending the target disease you want to prevent.

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6 of 10 people found this answer helpful

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Subdue Maxx Fungicide 4.5 out of 5 stars Rating: 4.3 (3 Reviews / 21 Q&A)

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