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 black spots on my tomato plant leaves and some on the main stem. Will it kill the plant? Can I get rid of it? Will it apread to the soil or other plants? HELP. I see it in most of the greehouses I have been to. Is it to late to find someone with a place to find a clean tomato plant and still plant it and get fruit?
- I want to plant raspberries in my garden next spring but am confused. Which does better in Cache Valley: summer- or fall-bearing? The USU pub on raspberry production (HG/2004-16) says plant only Haida or Malling Joy, but I haven't found anything about these species on the web. Is this statement still valid? If so, are they fall- or summer-bearing? If not, what is your species suggestion?
- Last year when I was about to harvest my corn from my yard I found that something got to about half of it before I did. I don't think it was insect because of the nature of the damage; I suspect birds. On the ears in question the husks were literally shredded and each kernel picked out. I know there are blue jays nesting in the area but this was the first time any thing like that happened. I don't think it was a mammal since the stalks were intact and not collapsed from the weight of what got at the ears that were devoured. Do you what causd this to happen? Is there something I can do to prevent that from happening this year? Thanks
- When do you advise setting the sprinklers to run? Is early morning the best time for both lawn and (drip) garden?
- Now that the snow has melted off our lawn, we notice there are winding "trails" through the grass. One of the trails goes from a patch of vince major ground cover, across the grass to another patch of vinca major ground cover. It looks like something has pushed up the black plastic lawn edging enough to crawl underneath. There is no soil excavation on top of the lawn; only tunnels through the grass. We've never had moles or voles before that I know of so I don't know what habits they have. Do you think it could be a mouse or maybe a mole or vole? What's the best way to get ride of it?
- Do you have a list of good varieties of produce producing plants to grow in this area? I am looking to plant fruit trees this fall and start a garden next year.
- I have a young (~3 year old) brown turkey fig. I planted it last fall and it survived! the winter. It is producing small figs now but the leaves have a brownish gray powdery looking substance on them. It doesn't rub off but looks like powdery spots. Any clue what it might be or what I should do? The leaves remain green and look healthy. This appeared after the recent heavy rains.
- I have a sister that lives in South Jordan. She and her neighbor planted their gardens at the same time with the same type of soil. Her neighbors vegetables are thriving and my sisters are on the verge of death. What should she do and where can she have her soil tested?