Active ingredient
Propiconazole
Triazole (DMI, FRAC 3)
A systemic fungicide from a different class to the strobilurins, which is what makes the two a usable rotation pair.
What it does
Described by Virginia Tech as a good general fungicide covering many diseases, and it does carry dollar spot — nine mentions on the label we read — alongside brown patch, large patch, anthracnose, red thread, rust and summer patch.
What it does not do
It lasts less long on brown patch than azoxystrobin does, so the trade for its breadth is a shorter interval between applications.
The label constraint people miss
The same registrant sells both a 2.42% concentrate and a 0.51% granular under separate registrations. Same active, different product, different rate — match the registration number rather than the active name.
Products we review that contain it
Every product below is here because we opened its label — on EPA's own database or the registrant's — and read Propiconazole in the ingredient statement. Registration numbers are on each product's page.
Rotation Fungicide
BioAdvanced Fungus Control for Lawns
★★★★☆ (4.4/5)
Propiconazole in a hose-end sprayer. Fast curative knockdown and the right rotation partner to azoxystrobin for resistance management.
Best for: Second application in a fungicide rotation
$19–$24
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Combination granular fungicide (Group 11 + Group 3)
Quali-Pro Strobe Pro G Granular Fungicide, 30 lb
★★★☆☆ (3/5)
Both actives from our fungicide comparison in one bag — which is convenient, and which the label itself warns is not a resistance strategy.
Best for: A large lawn where one granular pass beats two products — used occasionally in a programme that also contains a different group, not as the routine bag
$110–$130
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Guides that use Propiconazole
- Gray Leaf Spot: One Name, Three Different Diseases
- Best Lawn Fungicide: You Are Buying a FRAC Group, Not a Brand
- Azoxystrobin vs Propiconazole: One Misses Dollar Spot
- Dollar Spot Treatment: The Disease Nitrogen Fixes
- Lawn Fungus Identification: Rule Out 4 Impostors
- Brown Patch Treatment: Fungicide Alone Won't Fix It
Buy for the active, then read the label anyway. Two products with the same active are not interchangeable — concentration, labelled sites and species tolerances all vary, and a three-part registration number means a narrowed label. How to read one in two minutes. Where our page and your container disagree, the container is the legal authority.