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Subdue Maxx Fungicide

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Subdue Maxx Fungicide by Syngenta is a microemulsion concentrate formulation providing excellent tank mix compatibility and stability which contains no odor and mixes into a clear solution. Subdue Maxx has broad-spectrum control, including pythium blight and pythium damping-off, and also contains systemic activity providing even distribution throughout the plant.

Target Pests

Subdue Maxx Fungicide is used for the control of damping off root and stem diseases caused by pythium and phytophthora spp. foliar diseases such as downy mildew and many other listed diseases.

For Use In

Subdue Maxx Fungicide is for use on ornamentals; turf; non-bearing citrus grown in and as landscape plantings; conifers grown in nurseries and plantations including christmas trees; and non-bearing deciduous fruit and nut trees grown in nurseries.


For application to turfgrass for pythium blight, yellow tuft, and downy mildew using Subdue Maxx apply as a preventive treatment at 0.50 to 1.0 ounces in 1 to 5 gallons of water per 1,000 square feet. Retreat applications can be made at 10 to 21 day intervals if necessary. During periods of prolonged conditions favorable for disease development, use 0.5 to 1.0 ounces on a 14 day schedule.

For ornamental foliage application using Subdue Maxx Fungicide mix at a rate of 0.5 to 1.0 ounces to 100 gallons of water and apply to runoff.

For other application sites and specific rates refer to the label above.

Coverage Area

If Subdue Maxx Fungicide is used at the high rate for application to turfgrass each quart container will treat an estimated 0.69 acres

Time to Kill

Subdue Maxx Fungicide begins to eliminate disease within minutes after application but can take up to several weeks to get complete control depending on the target fungus.

Mix Rate

0.50 to 1.0 ounces in 1 to 5 gallons of water per 1,000 square fee

Active Ingredient

Mefenoxam 22.0%

Subdue Maxx Fungicide

Subdue MAXX

Subdue MAXX is a systemic fungicide for use on ornamentals; turf; nonbearing citrus grown in nurseries and as landscape plantings; conifers grown in nurseries and plantations, including Christmas trees; and nonbearing deciduous fruit and nut trees grown in nurseries.


Subdue Maxx can be used on container, bench or bed-grown ornamentals in greenhouse or outdoor nurseries and on ornamentals grown for indoor and outdoor landscaping – including turf. Controls damping-off and root and stem rots caused by pythium and phytophthora. Apply only as a soil drench or soil surface spray followed by irrigation.

Subdue® MAXX fungicide can provide fantastic control of fungi and disease such as Pythium blight at half the usage rate of other fungicides. In addition, this new microemulsion concentrate formulation offers ease in mixing and reduces equipment wear.


Subdue MAXX is a systemic fungicide having a specific mode of action. Use of Subdue MAXX could result in development of insensitive strains of fungi. Development of insensitivity cannot be predicted. Consult with your State Agricultural Experiment Station or Extension Service Specialist for guidance and ways to control any possible Subdue MAXX insensitive strains of fungi which may occur. The active ingredient in Subdue MAXX is mefenoxam, a Group 4 fungicide (phenylamide).


Some disease pathogens are known to have developed resistance to fungicides used repeatedly for their control. To prevent the development of insensitive strains of fungi to mefenoxam, apply Subdue MAXX in an alternation or tank– mix program with fungicides that are not in Group 4 and to which pathogen resistance has not developed. Applications targeted for downy mildew diseases should always be in a tank mixture with a non-Group 4 fungicide

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Would you Recommend?
Best treatment for ground fungus.
Gold standard treatment for ground fungus -- stops ground fungus if used at first sign. Have used successfully for a number of years.
August 5, 2018
8 months ago

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