Ask a Question
Notify Me On Question Update
Email this Question
I have an older crab apple tree that is focal point of my small yard. About 3 years ago the leaves became infected with powdery mildew. I have been told to not do anything with this, as it will eventually go away and the tree will fine - but over the years it has gotten much worse each spring. There are only about 60% of the leaves that are starting to look healthy by mid-June. Over all, the leaves are withered and this year we have very few blossoms. Another problem: The tree also has four large limbs that come out of the trunk. I noticed that there seemed to be wood pulp inside a place where a branch was cut off years ago. I scooped out the pulp and found that some bug or other creature has created a cavity that goes 6” into the 10-12” diameter limb and a large man’s fist could easily fit into the hole that has been created. While inspecting the hole I discovered a ¼” or so hole in the very back of the cavity, but no sign of the culprit. The limb seems to be doing fine, as the leaves on the branches from this limb are in no better or worse shape than the rest of the tree. I had my tree pruned by a highly recommended person this spring, in hopes that this would help with my powdery mildew problem. I love my tree, what should I do next about my perpetual powdery mildew problem and the unknown culprit who is dinning on my tree limb?
Rate This FAQ
Years when we receive a lot of rain and have cooler temperature makes powdery mildew harder to control. While the weather can't be controlled some there are some things that you can do to help your tree. If the canopy of the tree is dense thin out some of the branches to help increase air circulation. If your tree is watered by sprinklers, water earlier in the day so the leaves can dry before nightfall. There are also commercially available fungicides that can be used to treat powdery mildew. If you do choose to use a fungicide make sure to read and follow all of the instructions on the label carefully. Below is a link about Apple Powdery Mildew that has more information.
As for insect damage you would need to bring a sample in to our office for identification. If possible a sample of the insect would be best. If you are unable to find the insect you could bring in a sample of the damaged portion of the tree. We are located at 2001 S. State Street S1200.
Submit Your Suggestion
Other Questions In This Topic
- I have recently identified three large plants growing on a stream bed in my yard as water hemlock. From what I have read on-line, this is a very poisonous plant. Supposedly the stalks remain poisonous even when dead. My plants are quite bulky, and would fill at least a few garbage cans if cut down. Can you advise me on how to safely deal with these plants?
- We recently purchased new sod for our yard. It came with small redish brown beetles. I asked the sod company what they were and they didn't know. Are these beetles bad? Will they kill my lawn?
- Where can I get a chart that tells me when to plant vegetable or plants and also can you tell me how to plant blackberry and raspberry plants?
- I planted four Patmore Green Ash trees in my yard and they all have circular hole bite marks on all the leaves. I cannot see any insects on them. Do you have any idea what might be eating the leaves and how I can get rid of them?
- I just bought some property with what I think is a Bartlett pear tree. The tree seems to be in good condition but the fruit skin develops a coarse brown covering. What causes this?
- Is Fall a good time to plant a new lawn? I am a 72 year old homeowner. My back yard (about 2000 sq feet) is barren except or weeds (which my daughter and grandchildren are busy removing).
- We would like to know if Legacy Buffalo Grass would work alone in our back yard or whether we should mix it with something else. We are looking for a low water, low mowing frequency product that will work well with dogs who live inside but do run hard and play on it. We also like the pollen free feature of Buffalo Grass as one of our dogs has allergies and chews at her feet after being outside. We currently have mostly Bermuda grass and are in the process of killing it off. We live in Hooper and our yard is approximately 1/2 acre with a few young trees along the borders (which of course will get bigger). The trees are Mulberries, Cottonwoods, Red Oaks, Tulip Trees and Austrian Pines. Suggestions for mixes we have heard are Sheep's Fescue and Bella Bluegrass. Also, is there a place in Utah where we can buy these grasses so we don't have to pay a large price for shipping?
- How do I get rid of the Quaking Aspen suckers that are coming up in my lawn without hurting the trees or the grass?