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 want to plant a lilac hedge. I've never done lilacs before - how far apart should I plant them? Can I do a double row for a thicker hedge? If so, how far apart should the rows be? How fast do they grow? Do they need special care (they will be pretty close to a fairly busy road)? Can I plant them now, or should I wait until it's a little warmer? What are their fertilizer and water requirements? Will they be useful as a bit of a wind- and soundbreak? Thank you.
- I have a small backyard that has a house on the west and north side, a cinder block wall on the east side and a large tree shading a portion on the south side. Due to the high sides of our yard, we tried some part shade/part sun plants last year. But they got blasted in the heat. Our yard doesn't get 10 hours of sunlight but it gets very hot. Can I sucessfully grow a vegetable garden in part of it up against the houses and plant something along the cinder block wall - preferably grapes or raspberries, or other covering plants (can be non-fruit). Can you recommend a plant we can grow along the wall, both in the shaded and sunny parts? Any recomendations for better use of the space?
- What night-time temperatures are too cold for "tender plants" such as tomatoes, squashes, annual bedding plants, etc.?
- I am trying to find an organic solution to spraying weeds in the vegetable garden, such as morning glory. Would a mix of vinegar and lemon juice spread to the roots of the vegetables also, or could it be used? If so, do you have any information on proportions for the mix?
- I have many Chanticleer pear's in my yard. Each year they swarm with Wasps during the day. There are not any nests in them. Is there anything I can do or spray to remove them? They have been swarming many of my Quakies as well. I have read online that it could be from aphids on the trees and the Wasps go after the sugary substance the aphids leave behind. I have noticed on my Quakies that there are small holes on some leaves which might mean aphids, but on the Chanticleer's there are not any holes on the leaves so I don't think aphids would be on those. Please help the wasps are out of control on these trees.
- I have a peach tree with lots of little branches that look burnt at the ends. The rest of the tree looks healthy, but the ends of the branches keep turning black and dying.
- Just moved to where we have a very large backyard. I want to plant a large variety of fruit trees, but I don't know what will grow well in this climate. What types of fruit grow best in the Salt Lake area? (eg peaches, apples, nectarines....?) And which kind of each fruit would you suggest? I'm also new to this, so where should I go to buy the trees and find info on how to grow them correctly?
- It looks like something has bitten off whole leaves and blossoms from my tomato plants. They seem to be cut clean. What could be causing this and how can I fix it?