1. In what soils do aspen perform the best? I live in Colorado. Updated: January 05, 2012
2. How do I control suckers in my aspens/silver poplars? Updated: October 31, 2011
3. What do I need to know about planting and growing aspen trees? Updated: October 21, 2011
4. The leaves on my aspen tree are all sticky. What insects are doing this and is there a recommended treatment? Updated: October 16, 2011
5. My aspen tree has little knobby growths all over the branches; what is it and how can it be treated? Updated: October 16, 2011
6. What environmental conditions foster aspen leaf spot? Updated: September 28, 2011
7. What are some different varieties of trees that could be planted as an alternative to aspen? Updated: September 19, 2011
8. I see little gray-brown scales on the aspen bark, what are these? Updated: July 26, 2010
9. What are the orange pimples on the bark of my aspen trees? Updated: July 26, 2010
10. What is the best method of controlling leaf spot diseases on aspen trees? Updated: July 26, 2010
11. I have clay soils, how should I prepare the soil to plant aspen? Updated: July 26, 2010
12. I live in Colorado and was told to plant aspens on a berm. What is a berm? Updated: July 26, 2010
13. After the leaves on my aspen tree fell, I noticed the twigs have many bead-like swellings on them. What causes this? Updated: June 29, 2010
14. What could be causing spots on the leaves of aspen trees and what is a recommended treatment? Updated: June 25, 2010
15. What can be done about an orange substance oozing from an aspen tree? Updated: June 25, 2010
16. My aspen has leaves covered with black spots, what are they? Updated: June 25, 2010
17. How long do aspen trees live when planted outside of their native mountains? Updated: June 25, 2010
18. What is aspen leaf spot? Updated: June 25, 2010
19. I have black spots on my aspen, is this aspen leaf spot or something else? Updated: June 25, 2010
20. Once the black leaves occur when an aspen has leaf spot, is there anything one can do? Updated: June 25, 2010
21. What are some potential problems that could affect aspen trees in high plains backyards? Updated: June 24, 2010
22. Is it a good investment to have spruce and aspen trees sprayed to prevent insects in the spring? Updated: June 24, 2010
23. The leaves of my aspen have been turning brown around the edges and some are dropping. What should I do? Updated: June 24, 2010
24. I live in Colorado. Can I use a systemic insecticide to prevent an infestation of aphids on my aspen trees? Updated: April 22, 2008

Didn't find what you were looking for? Try asking one of our Experts.