What kind of trees you can plant

There is a master tree list the city of Seattle made and last edited in 2011 I am referencing here. The table lists trees in order of size (large to small) and gives information like their spread, their mature height, if they are suitable planted under wires, if it’s native, minimum strip width needed if street tree, and general comments.

In general, the trees in the small column category and a few from the medium can be planted under wires. None of the large ones are allowed.

Most of the general comments are quite helpful. There are a few, like the Italian Stone Pine, that require special approval and the comments category is where you find this out. Other comments fall under the category of ‘good to know’. My favorite is for the Cardinal Royal Mt. Ash the comment is: a vigorous tree with upright branches and a symmetrical habit.



The minimum strip width refers to the parking strip between your street and sidewalk where people typically plant trees. The range is anywhere from 4-8 feet width (4 for the smaller and up to 8 for the larger trees). Typically 5-6 feet will work and it depends what neighborhood you are in and how wife they designated the planting strips when they arranged to build sidewalks.

Bradford Pear Tree 2

There is also a key included for flower color and leaf color that becomes a nice quick reference when trying to decide what to plant.

If a tree dies – the city expects you to replace it with a tree of similar size and preferably in the fall. Each year they also expect you to have a certified professional prune the tree to no more than 1/4 the size.

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