I realize this is an old question, but for those researching the product currently, I was told by a reliable source to use 1 ml per 5-10 gallons. It is highly concentrated. Not to say the other answer is "wrong", as this is basically inoculating the root zone in dwc--everyone's situation is unique. individual circumstances and environmental conditions are going to play a factor in how much one should use.

Has anyone used this on zinnias? Battling powdery mildew.

It is quite efective on powdery mildew, it is however best applied prophylactically because it's a micro organism and needs time to colonize the plant. If the mildew is already established you should treat it with Daconil first to get better control

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Southern Ag Garden Friendly Bio Fungicide Organic, 8 OZ

Product ID: 43014880

Details

Brand
Root 98
Item Form
Spray
Liquid Volume
8 Fluid Ounces
Specification Met
USDA
Target Species
Fungus

🌿98.85% Bacillus amyloliquefaciens strain D747

♻️100% organic & garden safe

🛡️Broad-spectrum disease control

€ 29.82

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Description

🌱 Protect your garden like a pro—organic power that’s impossible to ignore!

TRUSTED BY THOUSANDS - Rated 4.6 stars by 786 gardeners who refuse to compromise on plant health.
POWERFUL ORGANIC DEFENSE - Harnesses 98.85% Bacillus amyloliquefaciens D747 for unmatched biofungicide protection.
ALL IN ONE GARDEN GUARDIAN - Effectively controls 30+ diseases across vegetables, fruits, ornamentals, and turf.
CONCENTRATED COST EFFECTIVE - Mix just 1 teaspoon per gallon to treat up to 1,000 sq. ft.—maximize value with minimal effort.
ECO FRIENDLY USDA CERTIFIED - 100% organic formula that’s safe for your home garden and the planet.

Southern Ag Garden Friendly Bio Fungicide is an 8 oz USDA-certified organic spray containing 98.85% Bacillus amyloliquefaciens strain D747. It offers broad-spectrum control of over 30 plant diseases affecting vegetables, fruits, ornamentals, and turf. Concentrated for efficient use, it’s trusted by thousands of gardeners for safe, effective, and eco-friendly disease management.

Specifications

ASIN	B014174BZM
Best Sellers Rank	#22,675 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #15 in Moss Control
Brand Name	Root 98 Warehouse
Customer Reviews	4.6 4.6 out of 5 stars (786)
Included Components	1 bottle
Item Form	Spray
Item Type Name	8 oz Garden Friendly Fungicide
Liquid Volume	8 Fluid Ounces
Manufacturer	Southern Ag
Model Number	5171
Part Number	5171
Specification Met	USDA
Target Species	Fungus
UPC	051538051712

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