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Spring Is Just Around the Corner!
Have Your Flowering Crabapples Looked Bad in the Past? |
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Soon the temperatures will be warming up and things will be starting to turn green. Now would be a good time to think a little about your yard, specifically your flowering crabapple trees if you have them. Apple Leaf Spot, or Apple Scab, is a common fungus that can damage the your crabapple trees. To prevent damage you must preventively spray the trees in early spring before they leaf out. If you wait to spray them until after they have leafed out fungicides become ineffective. Continue reading below to find out more about Apple Scab.
As a reminder we will start the first round of fertilizer in early April, depending on soil temperatures. Turfgrass early spring greening and growth activity is triggered by temperature and rainfall, not by fertilizer. A good tip to help get it to green up sooner is to mow the lawn with the cutting height a notch or two lower than your normal mowing height. You can do this as soon as the the lawn dries out enough to cut and before the grass actually needs its first cutting (late March if possible). This will help green your lawn up before your neighbors. |
Apple Scab
 | | Typical leaf spot damage on flowering crabapple leaves. |
Apple scab, or leaf spot, is a common problem with flowering crabapple trees. It is a fungus that first affects emerging leaves in the spring during moist conditions. Although apple scab rarely kills flowering crabapple trees it can cause heavy defoliation by mid summer. Leaves become covered in brown spots and the tree becomes unsightly as it drops leaves and thins out. The best way to treat apple scab is to spray the trees with fungicide in early spring when the leaves first emerge, often followed up with a second application two weeks later. After the tree has leafed out it becomes difficult to control the fungus and damage will likely occur in infected trees. So the best way to deal with this disease is to spray the trees preemptively. There are many disease resistant varieties availabe but if your trees have had apple scab in the past it is likely that they will show damage again, especially under the right weather conditions. |
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To talk more about your Tree & Shrub Care needs give us a call.
(734) 699-0010
www.no-weeds.com |
 Examples of untreated flowering crabapple trees displaying heavy leaf spot damage late in the summer. By this point there is little that can be done. The tree will survive but will be unhealthy and unsightly looking. Preventative treatment is the best way to keep your flowering crabapple trees healthy.  |
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Michael Weakland
Turf Pro Inc.
(734)699-0010 
www.no-weeds.com |
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