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
- We bought a house with horrible "goat head thorn" problem, all summer we have been pulling them out and collecting the thorny seeds as much as we can. We are now looking to plant grass seed. And are wondering what seed with grow faster than the goat heads, do well with high traffic (2 dogs) and in a semi shady area?
- Last fall we removed all of our oregon grape that has been growing for over 20 years to re-landscape a flower bed in our front yard. We put mulch on the bare ground to sit over the winter in hopes to start planting this spring. Now we have several mushroom 'colonies', is what I call it, breaking through the soil, but they are only coming through on half of the 5' x 12' area. I have pulled out the 'first round' of mushrooms, and now twice as mony are coming back, in the same area. How can I get rid of these mushrooms so that we can plant our new daylillies and spirea? I might also add that this area has not received alot of water, although it is next to our driveway where we shovel the snow.
- Last fall I planted a 4-foot tall Arizona cypress (Blue Ice) in my yard. I bought it from a local nursery who assured me it was cold-hardy enough for this area, but by this spring most of the needles on the upper 2/3 of the tree had turned brown. The lower needles that were beneath the snowpack for most of the winter are still green. Is there anything I can do to help this tree recovery (or should I find a different tree that's more cold-hardy)?
- I have an apricot tree that is so heavy laden with fruit that it broke a major branch yesterday leaving me with about a half bushel of partially ripened fruit. Can any of it be saved? What should I do?
- Please suggest some good bush rose varieties (not reds)- 3-4'high and 4' wide for a border planting in front of my home. I live in Holladay. Also, will a variegated dogwood tree grow well here if not in full sun?
- Two questions; I have an dwarf Honey Crisp apple tree that is about 5 years old. Last year it had a dozen apples. I didn't disturb the fruit spurs when I picked the fruit. This year there were no blossoms on the tree. I didn't prune it at all. What can I do to help it produce every year? Second question; I have peach borers in the main branches of my nectarine tree. The tree seems healthy other than the borers. What can I do about them at this point? Will it help to dig them out? Will it help to spray? Will they winter over to next year?
- I live in salt lake city, and have very hard rocky soil. I would like to plant a few varieties of trees for shade and decor (like to enjoy them in my own lifetime)I realize I'll need to excavate for good soil and root ball. Any suggestions?
- Please send me a list of what is recommended for gardening vegetables as far as the soil is concerned.