Tag Archives: Cercidiphyllum

Katsuras as Street Trees: picking the right tree

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Sometimes it pains me to take walks.  I was on my way home from the Imperial Bottle Shop and Tap Room, walking down SE 26th south of Powell Blvd when I came across these four Katsura trees planted in a 4′ wide parking strip, no curb parking with a painted bike lane right next to the curb.  Katsura trees 24″ from the bike lane.  How is that going to work?  Trees grow.  Branches extend and caliper up.  Branches hit bicyclists and pedestrians in the face and people crash and or break branches. (Yes, I know these can be limbed up over time but we all know how often that doesn’t happen and what are these trees going to look like if all of the branches are cut off of the street side up to 14′ for traffic clearance.  Trucks regularly use this street.)  And then there’s the whole it’s just the wrong plant for the growing conditions thing.  Katsuras grow in the mixed woodlands of Japan with moderate temps and summer rainfall.  So that looks like 3 strikes out of 4 pitches.  Landscape architects still love these…so do I, but planting them in positions with reflected heat with limited root runs through compacted mineral soils!!!! It’s 90 degrees today, their foliage is stressed even with their water bags filled around their bases.  I have seen many more bad examples of Katsura use over the last 25 years than i’ve seen appropriate.  If you’re going to plant them plant them in a woodland or along the edge where they will be protected from intense direct  sun and make sure they have a long cool root run.  This is so wrong.  Now we’ll all have to watch these limp along getting by stressing until they die or become so damaged someone removes them. Continue reading

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