What should I do?

Jul 11, Leaf rust is most prevalent in areas within the natural range of hemlocks. Control. Plant resistant varieties.

This article will focus on leaf rust of blueberry.

Remove all hemlocks within miles of the planting. Apply two to three fungicide sprays from August to mid-September.

For current fungicide recommendations, consult your local extension agent or see the Southeast Regional Blueberry Integrated Management Guide. References: Bristow, P.R., and Stretch, A.W. Leaf rust. Jul 26, Check the label of any pesticide referenced to ensure your use is included.

Be on the look-out for blueberry leaf rust, particularly in fields that have had a problem in previous years. While this disease is relatively rare in Michigan, it can be severe in fields that are bushnotch.barted Reading Time: 4 mins. This article will focus on leaf rust of blueberry.

This is because they are native to the southeastern parts of USA and are adapted to much warmer climates than most blueberries prefer.

How do you keep blueberries from rusting? In a Michigan State University Blueberry Fact Sheet released inexperts recommended implementing a preventive control program to control rust, including removing hemlock trees within a third of a mile in northern climates, avoiding susceptible cultivars, limiting overhead irrigation, and applying effective.

How do you treat blueberry leaves with rust? Fungicides should be used in areas with leaf spot problems. An early application is recommended followed by. Cold damp weather could have contributed to the problem. Leaf rollers and other pests attack plants that are already stressed from other causes. So the first question to ask you is are the plants now growing in a garden that is more shaded than it used to be?

If so, that is most likely at least one cause of the rust. Move the plants into more sun.