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 recently purchased a home in Sandy and there are chinese elms everywhere. Some of them are growing around gas and water lines. How do I get rid of them? Can I cut them down and poisen the root system? I also have a backyard that is completely overgrown with what I think is an annual bluegrass. I just want to rip all that out and plant seed in the fall. What is the best way to get rid of the annual bluegrass so it dosen't grow back next year? Can I just till it or do I need to do more than that?
- I have small white worms in my turnips and radishes. How do I deal with this problem?
- Our neighbors have recently cut down a Globe Willow and A Lombardy Poplar. They did not remove the trunks and the roots are not popping up in our lawn. Is there anyway for us to stop this from happening? These people are not the fastest movers and I have a feeling that the trunks will never be fully removed. These roots have already started to push up our concrete and have left runners down our lawn.
- I planted my vines mid may before the endless rains. Now many leaves are turning black in spots. Will this correct itself as things dry out and warm up?
- I have been told by a tree care company that my ash trees are infected with bores. They can be treated, and the trees should survive. Though my internet research I found ample information on emerald ash bore, however, that the research was largely on trees in Michigan. Would I have emerald ash bores, or do another type of bore exist in Utah? The tree care company suggested treatment in the spring, and another in the summer. Does that sound appropriate?
- Can an olive tree survive in Utah?
- A friend has recommended an Epsom salt solution for my garden plants. How are Epsom salts used here? I know they add mag to the soil if it is depleted but I didn't think they were used in alkaline soils... do they have any benefits? Will they help me grow blueberries etc., stuff that needs acidic soil? Research says that Epsom doesn't change the ph much but I know sulfur is good.
- Our lawn is very bumpy and hard to walk on. Are the quaking aspen tree roots doing this? Should we aerate the lawn or does this cause more problems with the roots?