Ask a Question
Notify Me On Question Update
Email this Question
We have lost 2 pine trees and are now loosing our quaking aspen. It has black spots on leaves and trunk has back on it also. The leaves are falling off. Is there anything that can save the tree?
Rate This FAQ
Black spots on your Quaking aspen could be a fungal disease called aspen leaf spot. The symptoms of this disease start out with small dark brown spots with light centers. These spots will spread and eventually grow together and in severe cases the leaves may die and fall off. Most aspens will survive this disease but it can weaken them, making them susceptible to other problems.
Below are two links. One that has some pictures of what aspen leaf spot symptoms look like and one with more information on the disease.
Control of this disease isn't easy but there are some things that you can do to help your tree out. Make sure to pick up and discard any fallen leaves. This will help reduce the spread of the fungus. Also, when working around the tree make sure that the lawnmower and weed eater do not run into it and damage the trunk. And when watering the tree try to avoid getting water on the leaves. Below is a link with more information on watering trees.
You can also apply a protective fungicide spray at bud break and to the newly emerging foliage next spring. If you choose to use a fungicide make sure that aspen trees are specifically mentioned on the label. There are some recommendations on products that can be used included in the second link above.
If this does not look like the problem your tree is having bring a sample into our office. We will help to identify the problem. Our address is 2001 S. State Street #S1200.
Submit Your Suggestion
Other Questions In This Topic
- I have a huge weeping willow in my front yard. My next door neighbor swears the root system has invaded her septic line. She had a globe will previously taken out that was about 10 feet from her main water line while my weeper is about 30. My own line is about 15 feet from the weeper. Is there any validation to her statement?
- I mowed my lawn today (04/18/08) and noticed some dead "tracks" that I do not remember seeing when I mowed on Saturday (04/14/08). I thought that it might have been something from my lawn mower but it is a brand new Honda that I purchased 1 month ago. I have posted some pictures on my website and can be viewed at supersoygifts.com/grass.htm. Thanks for any info you can provide.
- I put in my entire yard in Fruit Heights in late July. I noticed my maple trees are losing leaves, and showing signs of distress. I put sod up to the tree trunks, but I'm wondering if I should cut the sod back, and put mulch in so the tree roots can breath. Good idea? I cut back on the watering as well, which could have been a problem for drainage. Any help?
- I want to limit growth of newly planted fruit trees and wonder if it would be possible to do that by making a large wooden box and planting each one in a box in the ground? Also if it would work to do that, do I need redwood? I have a stack of 4 x 12 x 16 douglas fir lumber which had been painted on one side and I wondered if I could use them to do this or will they create bug problems?
- We want to grow aspen and scrub oak on our property. Can we transplant, if so how and when? Or do we need to grow from seeds? How often to water if we grow from seeds?
- We have Ray wood ash trees around our home and last year they were topped by hormworms. What do you suggest?
- My lawn has distinct areas that are brown next to healthy areas. The brown areas are covered in small holes.
- We are putting in a backyard with grass seed instead of sod. I am wondering if we need to add lime to our soil to change the pH and also what types of grass work best in our area. I assume that Kentucky Bluegrass would be best, but should I get a mix or just the Bluegrass? Are certain brands better than others?