Roses
Q.

Black spot on rose bushes. Using Mancozeb and immunox mix

Zone Culver City California | Anonymous added on May 12, 2017 | Answered

When I mix the two in my sprayer should I use 1 tablespoon of each in two gallons of water. I think that is what you mean in the paper I read on you sight. Don't want to make my roses look worse than they do now with an over strong mix. Thank you

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on May 12, 2017

Yes, you add each product to the tank water as though it were the only thing being added. Per the label on the product. Keep two things in mind with this treatment. The mancozeb will leave a yellowish powdery residue on the rosebushes foliage as that is part of how it works. This spraying in severe attacks is best repeated every 5 to 7 days. Once attacked by black spot, the existing foliage will not be free from its black marks/spots. If the fungus is killed, the new foliage should not have anymore black spot damage or signs.

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...
Roses
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