Bordeaux Mixture Apr 2026

Two primary methods are used for small-scale and commercial applications:

Pulverized copper sulfate and hydrated lime are added directly to a filling spray tank while the agitator is running to ensure even mixing.

A common formulation is the 4-4-50 mixture, meaning 4 lbs of copper sulfate and 4 lbs of lime in 50 gallons of water.

); acidic mixtures are phytotoxic and can burn plant foliage.

The final solution must be neutral or slightly alkaline (

Two primary methods are used for small-scale and commercial applications:

Pulverized copper sulfate and hydrated lime are added directly to a filling spray tank while the agitator is running to ensure even mixing.

A common formulation is the 4-4-50 mixture, meaning 4 lbs of copper sulfate and 4 lbs of lime in 50 gallons of water.

); acidic mixtures are phytotoxic and can burn plant foliage.

The final solution must be neutral or slightly alkaline (

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