I live in Santa Fe, NM at 6300 feet elevation. We bought our current house 5 years ago. It has several mature aspen trees. We have three aspen trees in the front yard, growing about 6 feet away from the house. Their trunks are about 6 to 8 feet away from each other. The tree in the middle is healthy, big dark green leaves, but the two on the left and right have very small, much paler green leaves. I have no idea how old these trees are. What could be causing the two outer ones to look so different from the middle one?
Aspens Trees need a slightly acidic soil to grow and thrive.
You can test the ph with a meter to see if this could be the issue.
You may also want to familiarize yourself with the growth rate and pattern of these trees, since they are very near your home.
https://www.gardeningknowhow.com/ornamental/trees/aspen/planting-quaking-aspen-tree.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
I have a home in Sisters Oregon. The aspen trees are getting a black mold or something all over the trunks. It almost look like they have been burned black. Also some others have a split in the bark that runs 4 or five feet lone. The leaves have not budded out yet so don't know what they look like. Thank you. Lori
There are several disease and pests that can cause issues for the Aspen Trees.
It may be Sooty Bark Canker.
The images were not very clear, so this link may have more help for you.
http://csfs.colostate.edu/forest-management/common-forest-insects-diseases/common-insects-diseases-of-aspen/#1464022953476-df1454c8-30fc
You can also show the image to your local County Extension Office.
Here is a link to help you locate your nearest office.
https://www.gardeningknowhow.com/extension-search/
What time of year and how much fertilizer do both trees require?
These links will help you with your trees.
https://extension.colostate.edu/mg/Gardennotes/635.pdf
https://www.gardeningknowhow.com/ornamental/trees/sassafras/what-is-a-sassafras-tree.htm
https://www.gardeningknowhow.com/ornamental/trees/aspen/planting-quaking-aspen-tree.htm
I want to plant aspen seeds, and I've read they start best in moist, well drained soil, on north an east facing slopes. But how deep should the seeds be planted? Soin tamed down, raked over or left loose? Direct sun, shade or mixed? Does time of year make much difference? This site is basically forest where aspens grow naturally, lots of rock, buried and loose. There are many pines and firs so acid soil.
How To Start These Seeds:
Scarification: Soak in water, let stand in water for 6 hours
Stratification: None required
Germination:Sow immediately. Surface sow and keep moist
https://www.gardeningknowhow.com/ornamental/trees/aspen/planting-quaking-aspen-tree.htm
Can aspen/poplar tree roots still grow when the tree is cut down?
Absolutely! Were you wanting to kill off the tree, or did you want to try to get it to grow again?
Our neighbour has this tree in their garden- our houses were built around existing trees on this brown fill site. It is about 6 metres away from the house. The neighbours let a new tree grow unchecked up against our fence which is now 2 metres high. We have found large thick roots in our flower beds which lead throughout the lawn when we try and pull them up. They are continually throwing up new saplings- it is a nightmare. I like the sound of next door‘s tree in the wind, but are our houses compromised? Is there anything we can do? Should we inform the builder/council?
Yes, our laws here are very different from yours. I would consult someone who would be familiar with the laws in your area. They will be able to help you figure out what to do regarding this situation.
I have this beautiful Quaking Aspen or Poplar tree. I think I might have damaged it by weedwhipping too close and creating a scar. Now there is a big hole and carpenter ants are climbing all over. Although it seems to be thriving! Are the ants harmful to my 3 years old tree? and what should I do?
Yes they can be harmful. They use the wood decay cavity and usually don't invade live tissue, but with their nest and activity they can prevent normal closure of the wound.
You can use ant bait or spray drench the entry and surrounding area with ant insecticide as a contact knock down and residual preventive barrier.
https://www.gardeningknowhow.com/plant-problems/pests/insects/home-remedies-carpenter-ants.htm