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Acoidal, Kumulus or Microthiol 80% Sulfur Fungicide, 30 lb.

Regular price $46.25 $43.94
Unit price

Note: Kumulus, Acoidal and Microthiol are all the same exact OMRI-Listed Organic Fungicide / Insecticide (80% Sulfur).  Due to limited availability, we buy the various brands based on what we can obtain and lowest pricing.  We ship whichever brand name is available, it may be one of either of the three.


KUMULUS DF, Microthiol and Acoidal are wettable sulfur formulations used as a fungicidal control or insecticide on crops and turf. Sulfur is present in a range of fine particles that provide ease of handling, good coverage, rapid action on the plants. The micro-granular formula flows readily without dust and dissolves rapidly for an easily maintained suspension.
Sulfur has multi-site activity against fungi and has been observed to inhibit respiration, disrupt proteins through cross-linking, form forming heavy metal chelates within fungal cells, and produced oxidation products.  These fungicidal properties result in the inhibition of spore germination and hyphal growth. The fungicidal activity of 80% Sulfur is thought to also be the result of a direct effect of sulfur contact with fungal cells.


Kumulus, Acoidal or Microthiol (all the same product) are potent organic fungicide and insecticide that kills pathogens through multiple mechanisms, thus greatly reducing the potential of resistance.



• Multiple modes of action greatly reduces resistance in disease and pests.
• OMRI-Listed for most stringent organic standards.
• For maximum results, applications should be made at 5-7 day intervals.
• A unique, micronized formulation allows for a dust-free, dry flowable sulfur in a granular form.
• KUMULUS DF, Microthiol and Acoidal dissolve without formation of foam and offers outstanding suspension ability.
• Advanced engineering results in sulfur particles of 9 microns or less, and mixes easily in water without any special agitation.


Kumulus, Microthiol and Acoidal are Labeled for Many Diseases and Pests


Diseases Include:

  • Powdery Mildew
  • Leaf Spot
  • Brown Rot
  • Blossom Blight
  • Fusarium patch
  • Take-All Patch
  • Peach Canker
  • Shot Hole
  • Prune Rust
  • Rust
  • Leaf Spot
  • Scab
  • See label for full list of diseases

Pests Include:

  • Red spider mite
  • Two-spotted mite
  • Eriophyid mites
  • Strawberry mite
  • Pacific mite
  • Bank grass mite
  • Atlantic mite
  • Flat mite
  • Silver mite
  • Brown mite
  • See label for full list of pests


For Ground Applications: In general, apply 2-10 pounds of product per acre.

*Rates vary depending on crop and disease or pest. Please see label for more detailed application instructions.



• Apply when disease first appears and repeat at 5-10 day intervals.
• If necessary, add a few drops of oil to avoid foaming.
• Do not apply if temperatures during or within 3 days after application are expected to exceed 90°F in the area to be treated.



Sulfur .............................................. 80%.



• 30 lb. Bag (covers approximately 1/2 to 1 acre).








Our sister company, Green Earth Ag & Turf, brings a decade of experience as the U.S. leader in providing Professional Landscapers, Farmers and Indoor Growers like you the best in organic products for higher yields, aesthetics and profits!  Discounted professional or wholesale prices can be found there.

to quickly and easily open a wholesale account with us or to get bulk and professional pricing. 

You can also contact us directly at (866) 374-5101 or for the top technical and customer service in the industry.  

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