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PDX Tree Service is committed to helping local homeowners and property managers with all of their tree requests and concerns. With our professional arborists available year-round to help with tree removal, pruning, lot clearing, stump grinding, and other procedures, you can count on us to provide the exact services you need, right when you need them the most.

Contact our talented team today by filling out our contact form below. Or, give us a call now at 503-968-8733 to request an on-site inspection or price estimate.


Fill out the contact form or call us at 503.968.8733 to get started today!

We happily service these areas:

Lake Oswego, West Linn, Oregon City, Sherwood, Tualatin, Beaverton, and Tigard

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Frequently Asked Questions

My tree is getting too tall. When should I top it?

Topping a tree has long been a practice, especially with conifer trees, such as Douglas Firs. After many years of this being a common practice for tree pruning, it is now blacklisted as a healthy pruning method for tree care professionals. Topping a tree is bad for the tree for a long list of reasons. Many times, topping a tree can result in more than one branch growing up in its place, creating weak tops that eventually become hazardous.

Another side effect of tree topping is the introduction of rot into the main stem of the tree. This is especially common in deciduous trees that have been topped, such as Big-Leaf Maple trees. If the tree cannot compartmentalize the rot, the tree will become hazardous and removal may be required to mitigate the risk. Topping a tree can also reduce your property value. However, there are some situations where topping a tree is the only mitigation measure. Have an ISA Certified Arborist assess your tree to be sure you aren’t making a detrimental mistake for your tree’s health.

What time of year should I plant a new tree?

Here at PDX Tree Service, we have had great results planting trees between November and April. The tree takes best to new environments when it is planted in a dormant state.

Is my tree too close to my house?

This is a common question that we get. Most of the answer lies in the species of the tree. As you may have imagined, not all trees have the same root structure. A Japanese Maple tree will have a much smaller root system than a Sweetgum Maple would, for instance. You should consider getting your tree assessed by a professional if you have a tree of a large variety closer than 10 ft to your house.

Are my tree's branches too close to my house?

Tree branches coming too close to a structure can damage the structure or let pests have easy access to your roof. Our recommendation is a 10-foot clearance in any given direction from branches to your roof. Sometimes we recommend more clearance if pest or moss problems persist.

When should I prune my tree?

Pruning for best results is normally done in the Fall and Winter. Trees have more time to heal the pruning cuts made and generally have less reaction growth, such as water sprouts, if done during this time. However, some trees can benefit from pruning at different times of the year. It’s best to have an ISA Certified Arborist out to give you the best answer for your situation.

How do I know if my tree is healthy?

Oftentimes, trees show signs of stress. These signs can sometimes be mistaken for the tree’s last dying breaths. A good way to quickly assess a tree’s health is to have a look at the very top of the tree. Usually, the top of the tree is the most telling sign of a tree’s health. If the top of your tree is browning and dried, this is a very bad sign for the tree’s overall health. In this case, you should have an ISA Certified Arborist out as soon as possible to assess your tree.

If there are mushrooms growing around the base of the tree or growing on the tree’s main stem itself, this is also a big red flag that you should have an ISA Certified Arborist out as soon as possible. Fungus can kill a tree’s structural root system while the fine roots stay intact. The tree may remain full and green, but can fail at the root system with no warning.

There is water/something dark oozing from my tree. Is this ok?

When there is discharge coming from your tree, there are a few things that could be causing it. First, determine what type of fluid is coming out of your tree. If it is sap, this is a warning to check for bug infestations. When the tree is attacked by a pest, oozing sap is a common way for the tree to combat the entrance and spread of bugs. If the ooze is of a thinner consistency and smells vinegary, it could be the tree’s natural reaction to a wound and is perfectly healthy. It is best to contact a professional if the tree is within striking distance of a valuable asset.

My Birch tree in Portland, Oregon is dying suddenly? Why?

Birch Borer is a common pest in the Portland metro area that kills our Birch trees relentlessly. Birch Borer attacks the vascular tissue of the tree, leaving behind a fungus that cuts off the flow of nutrients to parts of the tree that are infected. There is little that can be done to stop Birch Borer from killing the tree.

Spraying must be a regular part of the tree’s yearly maintenance if the tree is to survive much longer. But tree decline is inevitable, so it’s best to prepare for the loss of the tree if it has been infected with Birch Borer. Birch Borer spreads from tree to tree, so it is important to have infected material removed from the site once the tree is removed.

Have a question? Please, fill out the contact form and one of our arborists will get back to you!