Fall Hours

9:00am-6:00pm Daily

5050 SE Stark • 503-231-5050

9000 SE Division • 503-788-9000

Retail only - no online sales

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Portland Nursery

Winter tree problems

The wind, rain and possible snow of the coming winter can mean trouble for your large landscape trees.  How can you tell if your trees are healthy enough for all that mother nature has to offer?  We sought out our favorite ‘Certified Arborist’ Terrill Collier from Collier Arbor Care (503-72ARBOR) and asked him for some signs we can look for. 

Click arrow to begin video.


Terrill took us to a park in Vancouver Washington to show us a multiple trunked tree that had lost one of its trunks due to rot and decay at its base.  That is just one of the 8 signs that you should look for in a dangerous tree.  Other signs included weakly attached branches, cracks in the branches of the trunk, pealing bark and signs of decay or rot. 

These are the most obvious signs, but if you are unsure of the safety of your trees you can contact Collier Arbor care or a certified arborist.  Collier’s even has a brochure that can tell you what else to look for.  Terrill emphasizes that you insist on a certified arborist.  They are trained to look for the damaged spots and are trained (insured and bonded) to remove the weak tree safely.

Originally aired on GardenTime TV. See the GardenTime web site for more videos and information about the show)

Tree Care

Caring for your Trees


CLICK PHOTO TO PLAY VIDEO. Videos will load automatically. Visit the GardenTime TV website for more GardenTime videos.

Spring Tree Problems

Spring Tree Diseases

Fall Tree Problems

Summer Tree Diseases

Fall Tree Problems

Fall Tree Problems

Tree Care

Winter Tree Care