Safer® Brand Garden Fungicide Concentrate 16oz

Model #: 5456-6

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  • Prevents black spot, rust, leaf spot, and powdery mildew.
  • Makes up to 4 gallons of solution from one 16 oz bottle.
  • Protects roses, flowers, fruits and vegetables.
  • Can be used indoors or outdoors.
  • Can be used up until the day before harvest.

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Safer® Brand Garden Fungicide – 16oz Concentrate – How It Works Safer® Brand Garden Fungicide controls and prevents the spread of fungal diseases, including powdery mildew, black spot, leaf spot and rust, in plants. Simply mix this economical concentrate with water as directed to make up to 4 gallons of solution. Garden Fungicide works to create an environment that is not optimal for the fungus to grow and spread, therefore stopping the disease from further attacking the plant. Protect your flowers, foliage, ornamentals, fruits and vegetables from fungus up until the day before harvest.
3 in 1 Garden Fungicide
Best used for:
Kills Fungal Diseases
Killing Fungal Diseases
Protect Flowers and Edibles
Protecting Flowers & Edibles
Use up to day before harvest
Use Up to Day Before Harvest
Makes 4 gallons
Makes 4 Gallons
Economical Concentrate
Economical Concentrate
Garden Fungicide Concentrate

Control Damaging Plant Disease Safer® Brand Garden Fungicide is specially formulated with sulfur to control fungal diseases that can quickly overtake plants, causing irreversible damage. Diseases including powdery mildew, black spot, rust and leaf spot are all unsightly fungi that can have devastating effects on plants if left untreated. Plus, these plant diseases can easily spread to other plants nearby, wiping out an entire crop. Use Garden Fungicide to treat and eliminate these diseases right away. This treatment can make all the difference in the health of your garden.

Fungi require specific environmental conditions to live and thrive. The special formulation of sulfur in Garden Fungicide attacks these fungal diseases by creating an unwelcoming environment for disease growth, ultimately stopping the fungus dead in its tracks. Apply Garden Fungicide at the first sign of powdery mildew, black spot, leaf spot and rust to keep your plants free of disease so they can continue to flourish and thrive.

Target These Plant ProblemsSafer® Brand Garden Fungicide helps you control:
  • Powdery Mildew
  • Rust
  • Black Spot
  • Leaf Spot
Powdery Mildew
Plant Rust
Rose Leaves
Leaf Spot
Red Wine Grapes
yellow rose
Protect Plants from Fungal Disease Fungal diseases can take over and destroy plants in a short amount of time. Use Safer® Brand Garden Fungicide to protect your roses and flowers from unsightly black spot. Control leaf spot and rust on beautiful foliage plants and ornamentals. Keep vegetables and fruits, including strawberries, grapes, beans and peas, free from powdery mildew so they can continue to grow nutritious and delicious.
How To Use Garden Fungicide Spray Garden Fungicide at the first sign of infection. Be sure to spray plants thoroughly to saturate upper and lower surfaces of the plant foliage. Apply every 7 to 10 days, after rain, or as needed to control powdery mildew, leaf spot, black spot and rust. Safer® Brand Garden Fungicide can be used up to the day before harvest, so you can keep damaging fungi from attacking your plants until the very end!
How to Use Garden Fungicide
Easy to Mix Solution

An Economical, Easy-to-Mix Solution This 16oz bottle contains a concentrated sulfur solution that creates over 32 times that amount in usable Garden Fungicide spray. Simply mix a small amount of concentrate with water as directed until you have the desired amount of solution. Store any unmixed concentrate in a cool place for later use.

One 16oz bottle of concentrate makes up to 4 gallons of solution, which is the equivalent to 16 bottles of our ready-to-use spray! This entire bottle will cover up to 2,400 square feet depending on the type of plant you’re treating.

Safer® Brand Garden Fungicide Product Details Do you want to know more helpful details about Garden Spray? Take a closer look at the in-depth specifications for this product. Complete Product Details »
Safer® Brand Garden Fungicide Concentrate
Model # 5456-6
Size 16 fl oz
Active Ingredients Sulfur 12%
Eliminates Black spot, leaf spot, rust and powdery mildew
For Use On Flowers, vegetables and fruits
Learn More About Plant Diseases Safer® Brand Garden Fungicide Controls fungal diseases that have the potential to ruin gardens. For black spot, rust, leaf spot and powdery mildew, use Garden Fungicide to help your garden become fungus-free. Check out some of our great resources to learn more about the plant diseases that Garden Fungicide controls.
About SAFER® BRAND Safer® Brand is the leader in alternative lawn and garden products, offering many solutions that are compliant with organic gardening standards. Safer® Brand recognizes this growing demand by consumers and offers a wide variety of products for lawns, gardens, landscapes, flowers, houseplants, insects and more! More About SAFER® BRAND »
Safer® Brand Garden Fungicide Concentrate
Model # 5456-6
Size 16 fl oz
Active Ingredients Sulfur 12%
  • Black spot
  • Leaf spot
  • Powdery mildew
  • Rust
For Use On
  • Beans
  • Flowers
  • Foilage Plants
  • Ornamentals
  • Peas
  • Strawberries
Usage Notes
  • Before use, mix well.
  • Do not apply in temperatures over 85 degrees F.
  • Can be used up to the day before harvest.
  • Follow individual plant application instructions.

Disclaimer: Safer® Brand does not endorse any information contained in product reviews. Please follow all label instructions for your specific use.

Most Recent Customer Reviews

Review Rate
Review posted on
June 20, 2018
Sick man ye 69 By Lil planter

Brilliant! Plant problems solved

Review Rate
Review posted on
May 19, 2017
Good products By dj

My plants were having mildew and rust spots. This product cured these problems as well as the safer caterpillar killer helped to control and little varmints trying to eat my buds. both are easy to use and effective.

Read All Reviews (2) Write a Review
Q.The plants I need this for are in direct sunlight for a good portion of the day and we are currently hitting temps of 90 degrees. So I guess my question is if I cannot use garden fungicide what would be safe to use in those conditions?

We do not have any alternate suggestions for similar products to use within these conditions.

Q.I this safe to use indoors?

This product may be used indoors when used as directed. 

Q.Can this be used safely around animals? (Cats. dogs, birds, rabbits...)
We would recommend animals and people avoid contact with plants until the spray has dried.
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All About

All About...Plant Diseases

Powdery Mildew

Numerous strains of fungi are commonly referred to as Powdery Mildew. Since this disease removes essential nutrients from the plant, leaves may become yellow, stunted or drop off prematurely.

Black Spot

Roses, especially hybrid tea roses, are highly susceptible to this infectious fungal disease. Black spots, as the name implies, will appear on the leaves, followed by a yellowing surrounding the spots.

Learn More:

More about Plant Diseases»


Expert Tips for a Beautiful Garden!

Gardening can be a very rewarding and healthy undertaking. By using products and methods that are compliant with organic gardening standards, plants grow better, insect pests can be controlled, plant diseases can be eliminated, and lush harvests can be enjoyed!

Learn More:

Safer® Brand Garden Fungicide, Concentrate


Controls Powdery Mildew, Black Spot, and Rust on flowers, fruit, and vegetables

Directions for Use:


For control of Black Spot, Leaf Spot, and Rust, mix 1 part concentrate to 30 parts water or 4 fl oz (8 tbsp) per gal of water.

For powdery mildew mix 2 fl oz (4 tbsp) per gal of water.Place about half of the volume of water in sprayer, add concentrate, stir well, add rest water and mix thoroughly. Turn agitator on large tank sprayers.

For coverage, see individual applications.

Spray plants thoroughly to wet the upper and lower surfaces of foliage. Repeat as recommended.

Individual Applications:

SHAKE WELL before use.

To control powdery mildew, leaf spot, and rust on FLOWERS, FOLIAGE PLANTS AND ORNAMENTALS, spray at 7 to 10 day intervals or as needed.

To control powdery mildew, black spot and rust on ROSES, spray a 7 to 10 day intervals, or following rain. Be sure to treat new growth and buds. Avoid spraying when plants are in full sun or temperature exceeds 85 degrees F. Apply 1 gal Mix to each 350 sq ft.

To control powdery mildew on BEANS AND PEAS, spray at first sign of disease and repeat at 7-day intervals as necessary. May be used up to day before harvest. Apply 1 gal of mix to each of 250 sq ft.

To control powdery mildew on APPLES AND PEARS, apply to thoroughly wet foliage. Apply at pre-bloom stage or after petal fall as needed.  NOTE: Some apple and pear varieties are sulfur sensitive; test for varietal sensitivity prior to full scale treatment.

To control powdery mildew on POTATOES, spray before disease appears and repeat as necessary. Apply 1 gal of mix to each 350 sq ft.

To control powdery mildew on CUCUMBERS and SQUASH, spray when powdery mildew appears and repeat as necessary. Do not spray young plants. Apply 1 gal of mix to each 600 sq ft.

To control powdery mildew on STRAWBERRIES, spray when disease appears and repeat as necessary. Do not spray young plants or apply to strawberries that will be used for canning. May be used up to the day before harvest.

To control powdery mildew on GRAPES, thoroughly cover foliage. Begin when new shoots are 6-10 inches. Repeat before blooms open and at 14 day intervals as needed. CAUTION: Do not apply to wine grapes within 21 days of harvest. Sulfur may damage concord and other labrusca varieties.

Home Greenhouse Application:

SHAKE WELL before use.

To control powdery mildew, leaf spot and rust on bedding plants, propagates, fruits and vegetables:

Mix 1 part concentrate to 30 parts water (8 tbsp. per gal) and apply according to above recommendations by crop type. Test for phytotoxicity before full-scale application.

Use Cautions:

  • Some plants are susceptible to injury from sulfur under certain climatic conditions.
  • Do not apply on Boston fern, spinach, apricot, filberts, walnuts and viburnum.
  • Do not apply when temperature exceeds 85 degrees F.
  • Do not apply for at least 4 weeks following application of an oil spray or within 4 days of other pesticides.
  • Be sure to wash and rinse spray equipment thoroughly after each use.
  • Do not allow mixed spray to stand in spray equipment.
  • Avoid contact with plants until spray has dried.

Storage and Disposal:

Storage: Store only in original container in a cool, dry area inaccessible to children and pets. Protect from freezing and heat. Keep container closed tightly to prevent evaporation.

Disposal: Non-refillable container. Do not reuse or refill this container. If empty, place in trash or offer for recycling if available. If partly filled, call your local solid waste agency for disposal instructions. Never place unused product down any indoor or outdoor drain.


Plant Disease Control - FAQs


Q: How do I know if my plant is being attacked by an insect or a disease?

A: If it’s an insect, the plant may have holes in its leaves. Turn the leaves over and you may see the insects themselves clustered on the underside of the leaves. You may also see and feel a sticky substance if it’s an insect because the insect will leave a secretion on the plant.


Q: My pumpkins' leaves have white powder on them. What is it? How do I get rid of it?

A: It sounds like you are talking about powdery mildew. There are fungicides, such as Safer® Brand Garden Fungicide, on the market that can work effectively in controlling powdery mildew. More»


Q: How do I get rid of anthracnose on my dogwood tree?

A: The best way to control anthracnose includes several measures. Starting with varieties that are resistant to disease, especially anthracnose. Be sure to prune the tree during the dormant season by removing dead branches. More»

More FAQs»

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