Thanks for the information, it does make sense to plant a variety. I grew on the west side of Lansing in the '60s and '70s, most of our area around Quentin and Frances Park had huge American Elms lining the streets. It was really terrible to see those lovely trees die off one by one. As kids the elms sort of told the seasons by events like the big seed drops that we called oatmeal, the sticky sidewalks during aphid season, dark green cool shade in summer, and of course in fall when we would make all kinds of fun with the leaves, like making forts, mazes, and big plies to jump in. After all that we would make big bonfires right in the street that filled the air with the scent of burning leaves [ kind of nice] which was another sign of the seasons coming from the elms. The street looked kind of shabby after all the trees were cut down. The city planted Asian/Russian Elms in front of our houses which have much smaller limbs than American Elms, fifty something years later you will find a nice tunnel of trees down Park Ave. almost a nice as the big elms of long ago. I hope that kind of elm will not die off some day, they did plant all the same variety.
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