Pear Trees
Q.

Fire Blight and Copper Sulfate

Anonymous added on May 14, 2011 | Answered

I understand a copper sulfate solution is effective against fire blight. I have about one pound of copper sulfate crystals (blue). I don't need hundreds or thousands of gallons of the mix to treat my three pear trees. How much in grams or ounces should I use per gallon (or 5 gallon) to make the mix? I have an electronic scale that measures 0. 0 oz. I assume the answer you'll give me is by weight. . . . yes?

A.
A.Answers to this queston: Add Answer
Nikki
Certified GKH Gardening Expert
Answered on May 15, 2011

At its lowest rate, use approximately 9 grams of copper sulfate per gallon of water.

00
Was this answer useful?

Log in or sign up to help answer this question.
Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Pear Trees
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert

Learn More