Isarid™ HG

When to use Isarid™ HG?

Isarid™ HG is a powerful biological insecticide that helps growers and homeowners protect plants from a wide range of troublesome pests. It targets whiteflies, aphids, thrips, mites, beetles, psyllids, mealybugs, and fungus gnats on fruit and vegetable crops, ornamental plants, roses, bedding plants, trees, shrubs, lawns, and more. Whether used in gardens, greenhouses, or home landscapes, Isarid™ provides reliable, environmentally conscious pest control.

Apply Isarid™ HG throughout the year from early spring to late fall (when soil temperature is above 39°F but less than 86°F). Typically, it takes 3 – 7 days for an infected insect or mite to die and 7 – 10 days after the first spray to see a reduction in an insect or mite population. Repeat applications 2 – 3 times at 15-day intervals sufficient to maintain
control or shorter (5- to 8-day intervals) depending on pest pressures.

How does Isarid™ HG work?

Isarid™ HG works using live spores of the beneficial fungus Isaria fumosorosea strain FE 9901. When applied, these spores naturally infect and suppress target insects, providing effective control without relying on chemical pesticides. When spores of Isarid™ HG come into contact with the insect pest they attach to the body and begin to grow almost immediately. Once the spore germ tube penetrates the host cuticle, fungal multiplication takes place through formation of hyphal bodies in the host body. This beneficial fungus mechanically disrupts the host’s internal organs and initiates tissue necrosis. This leads to lack of feeding, inactivity and eventually death.

How to use Isarid™ HG

Application

Isarid™ HG can be applied as a foliar spray or soil drench 

HOW TO USE FOR HAND-HELD SPRAYERS AND SPRAY TRIGGER BOTTLES

• Fill sprayer or bottle with appropriate amount of water and Isarid™ HG
• Mix spray solution thoroughly.
• Keep spray solution agitated during application.
• Use a minimum pressure of 40 PSI for manual or hand-held sprayers.
• Do not allow spray mixture to stand overnight

HOW TO USE FOR HOSE-END SPRAYERS

Follow hose-end sprayer instructions to determine how to fill, set dial, clean, and disconnect from hose.
Set dial on sprayer to deliver rate as directed on the label. 

To assure that plants to be treated are not sensitive to the treatment, apply a small amount of the
product to a few leaves or the above ground portion of the plant and check back in 2 – 4 days for signs of
phytotoxicity.

Optimal humidity for growth of Isaria fumosoroseus FE 9901 is 50% or greater. If humidity is below 50%, schedule application immediately after general watering or irrigation. 

Storage and Handling: 

Except when preparing product for application, store under refrigerated conditions (46°F (8°C)). When preparing for application, store at room temperature conditions (75°F (24°C)).

Isarid HG contains live spores of the fungus Isaria fumosorosea strain FE 9901. The spores are alive and may be harmed by storage at high temperatures (>86°F (>30°C)) or contact with water for more than 24 hours

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See here for label details: Isarid HG 4oz Label