Home Garden Fungicide for Control of Rust on Mayhaw

Home orchard enthusiasts growing mayhaws now have a readily available fungicide they can use for control of rust caused by Gymnosporanium clavipes.  Mayhaw has been added to the new label for Spectracide Immunox Multi-purpose Fungicide containing the active ingredient myclobutanil. For control of rust, sprays should be applied beginning at the pink bud stage and reapplied every 7 to 10 days thereafter. However, no sprays should be applied within 14 days of harvest. Please consult the label for use rates and other pertinent information.


About Don Ferrin

I am an associate professor and extension specialist in the Department of Plant Patholgy & Crop Physiology with the LSU AgCenter in Baton Rouge. I have statewide responsibility for issues and educational programs related to diseases of all horticultural crops in Louisiana.
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4 Responses to Home Garden Fungicide for Control of Rust on Mayhaw

  1. George Giltner says:

    Dr. Ferrin could you recommend a source for microscopic views of Quince rust?

  2. Glenda griffin says:

    Is there an organic. Control for Quince rust on may haws?

    • Don Ferrin says:

      Yes, products containing neem oil will give some control of quince rust if sprayed on a regular basis (every 7-10 days). However, coverage is important and only the tissues that are actually sprayed will be protected.

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