What information is here
Pesticides and their recommended uses were on the labels at the time of last access to company label information. Because changes in labels occur constantly and because older labels will be encountered in many purchase points, follow the label on the product you are using. Use only if crop or pest or specific use is mentioned on the label.

Reference to commercial products or trade names is made with the understanding that no discrimination is intended against other products that also may be suitable. At this time, neither Spectracide nor Bonide have provided me with current labels. Their products are not included in this database.

To print the information in the tables
To print the information in these tables please press the pdf button in the upper right corner, wait for the document to appear, then print.

About fungicide names and finding the fungicides at the store
Sometimes you may not be able to find a particular fungicide at the stores you do business with. If so ask the manager if they order from BWI. If they do, than use this table (Table 2, below), to provide the manager with the catalog number to order. While there are other suppliers to garden stores, BWI is the only one that has provided me with a set of catalog numbers for their products.

All fungicides contain an active ingredient that attacks, and hopefully, impairs the fungus. Each active ingredient has two names, a common name which we humans can understand, and a chemical name, which is only understood by those who have been trained in organic chemistry. Because it is primarily the active ingredient that counts* and not the brand name, and because many companies have fungicides that contain the same active ingredients, plant specialists often recommend a fungicide by its common name, for example "chlorothalonil". Unfortunately, some companies like to put the complicated chemical name on the label. The chemical name for chlorothalonil is "Tetrachloroisophthalonitrile". This causes shopping confusion.

I have used only common names in this database. They can be viewed by selecting "View Fungicide" and clicking on the fungicide of interest. They are also seen in all other tables under the bold word "Active-Ingredients". If you can't remember the correspondence between the names in this database when shopping, below, is a table that contains a list of common and chemical names to help you while shopping.

I had completed this database, except of the Green Light Information, when Kevin Ong of Texas A&M showed by a well written publication Chemicals for Plant Disease Control at Home by George Philley, Texas A&M. Much of this work duplicates his - but hopefully, this will stay up-to-date.

What is a FRAC code and how do I use it?
On the left side of the tables you will see a bold "Frac Code:" followed by either a number or a letter and a number. FRAC code stands for Fungicide Resistance Action Committee, a group of professionals whose goal is to extend the life time of fungicides before resistance develops. Basically, when you need to repeatably spray to control a fungal problem, it is best to use chemicals from different groups - i.e. different numbers - unless the code begins with a "m" followed by a number. This means that the fungicide acts upon multiple sites, and resistance risk is low. This risk is also reflected in the tables.

*Some companies add other materials to the fungicides, such as spreaders or stickers, or flowing agents. These additives may make a particular brand of fungicide work better in many different ways than another with the same active ingredient.

Common Name of Fungicide	Chemical name of Fungicide
Captan	N-trichloromethylthio-4-cyclohexene-1, 2-dicarboximide
Chitin (organic)	(Poly-N-acetyl-D-glucosamine)-Protein
Chlorothalonil	tetrachloroisophthalonitrile
Copper ammonium complex	Don't know
Copper hydroxide	copper hydroxide
Copper salts	copper salts of fatty and resin acids
Copper sulfate	copper sulfate pentahydrate
Fosetyl-al	aluminum tris (O-ethyl phosphonate)
Lime sulfur	calcium polysulfide
Mancozeb	Carbamic acid, ethylenebis{dithio-},manganese zinc complex OR ethylene bisdithiocarbamate
Maneb	manganese ethylene bisdithiocarbamate
Myclobutanil	alpha-butyl-alpha 4-(chlorophenyl)-1 H-1,2, 4-triazole-1-propanenitrile
Neem oil	Extract of Neem oil
PCNB or Quintozene	Pentachloronitrobenzene
Potassium bicarbonate	potassium bicarbonate
Propiconazole	1-((2-(2,4-Dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl)methyl)-1H-1,2,4-triazole OR 1H-1,2,4-Triazole, 1-((2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl)methyl)-
Quaternary ammonium	complicated names beginning with N-alkyl
Streptomycin sulfate	streptomycin sulfate
Sulfur	sulfur
Tebuconazole	Alpha-(2-(4-Chlorophenyl)ethyl)-alpha-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol
Thiophanate methyl	Dimethyl ((1,2-phenylene)bis(iminocarbonothioyl))bis(carbamate) OR Dimethyl 4,4'-o-phenylenebis(3-thioallophanate)
Thiram	tetramethylthiuram disulfide
Triadimefon	1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1,2, 4-triazo-l-yl)-butanone
Triforine	(N,N'[1,4 piperazinediylbis (2,2,2-trichloroethylidene)