Knowledgebase

Needlecast and canker on my evergreens #857554

Asked January 19, 2024, 3:09 PM EST

How should I treat these diseases/bore problems for my 60+ evergreens? I have quotes from 5 services. They all tell me different things: 6 sprays for needlecast and 3 sprays for canker; 3 sprays for both. 5 sprays and deep root feeding, 4 sprays and inject all the trees. I am perplexed due to the different approaches and the costs run from $4000 to $6500. Your guidance would be appreciatied. Thanks

Oakland County Michigan

Expert Response

Good afternoon and thank you for reaching out.  Would it be possible for you to attach a few photos of the trees to this question?  (Photos really help our experts made solid recommendations)

Ask Extension Question Wrangler Pronouns: she/her/hers Find your local Extension office here: https://www.canr.msu.edu/outreach/county Find an expert in a specific topic here: https://www.canr.msu.edu/outreach/experts/experts-by-topic-area Find home gardening information here: https://www.canr.msu.edu/home_gardening/ Order a soil test kit here: https://www.canr.msu.edu/news/soil-testing-returns-through-msu-extension Mold questions? We don’t have an expert in mold, but we do have a few resources below or contact the  Michigan health department. Molds in the Home Indoor Air Quality May be Hazardous to Your Health   Mushroom questions? We can’t identify, but we do have these three resources to help you: Identifying  Morel  Poisonous MSU is an affirmative-action, equal-opportunity employer. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Michigan State University occupies the ancestral, traditional and contemporary lands of the Anishinaabeg, Three Fires Confederacy of Ojibwe, Odawa and Potawatomi peoples. The University resides on the land ceded in the 1819 Treaty of Saginaw. Replied January 19, 2024, 3:58 PM EST

From: ask=<personal data hidden> <ask=<personal data hidden>> on behalf of Ask Extension <<personal data hidden>>
Sent: Friday, January 19, 2024 3:58 PM
To: dch2o <<personal data hidden>>
Subject: Re: Needlecast and canker on my evergreens (#0127478)
 
The Question Asker Replied January 19, 2024, 5:40 PM EST
Hello,

If you haven't had an ISA certified arborist do a proper diagnosis and treatment plan for your 60+ evergreens. It is highly recommended you have an arborist do an onsite visit Direct link: https://www.treesaregood.org/findanarborist/arboristsearch

Please read this article – this will give you an idea what is involved to treat these trees – Check out the article: Help me save my blue spruce - Jan Byrne, MSU Plant & Pest Diagnostics; Bert Cregg, MSU Departments of Horticulture & Forestry; Jill O'Donnell, MSU Extension; and Monique Sakalidis, MSU Departments of Plant, Soil and Microbial Sciences & Forestry - May 27, 2021, at this link: 
https://www.canr.msu.edu/news/help-me-save-my-blue-spruce

Also please check out this article: What is spruce decline and what should you do about it? Frequently asked questions about spruce decline. Bert Cregg, Christine McTavish, Andrew Jarosz, Jill O’Donnell and Dennis Fulbright, Michigan State University at this link: 
https://www.canr.msu.edu/uploads/files/AABI/SpruceDecline-web.pdf

This will give you an idea of what is involved - In the last paragraph this document discusses borer treatment. Check out: BORERS OF PINES AND OTHER NEEDLE BEARING EVERGREENS IN LANDSCAPES – Purdue University - Dr. Clifford S. Sadof, Department of Entomology at this link: 
https://extension.entm.purdue.edu/publications/E-256/E-256.pdf

I hope this helps – Any other questions, please let me know – Thanks!
An Ask Extension Expert Replied January 20, 2024, 9:32 AM EST

Loading ...