| Plant of the Month - October, 2007 |
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by Jeff Iles Arboretum Board Member Professor and Chair Department of Horticulture Iowa State University
Acer saccharum
Well, if you found any of these explanations plausible, then you're well on your way to understanding the plant introduction game, and one of the best at playing the game was the late William (Bill) Flemer (1922-2007). Haven't heard of Bill Flemer? Okay, but surely you've heard of his plant introductions. In fact, the list of plants Bill introduced to the nursery trade reads like a who's who of famous and influential plants. Surely you've heard of 'October Glory' red maple? How about littleleaf linden 'PNI 6025', better known by its trademark Greenspire®, or ginkgo 'PNI 2720' (Princeton Sentry®)? But my all time favorite Flemer introduction would have to be Acer saccharum 'Green Mountain'. Introduced way back in 1964, 'Green Mountain' remains one, if not the most popular sugar maple selection available in the nursery trade today. This truly is an amazing accomplishment particularly when you compare 'Green Mountain' sugar maple to two other wildly popular cultural artifacts from that same year; the movie "Mary Poppins" or the Beatles hit single "I Want to Hold Your Hand." To be sure, both are still around, but neither passes the relevance test like 'Green Mountain'. But why is the tree so popular and how has it remained at the top of the heap? Well, for starters you can't discount the name. It is one of the great shade tree cultivar monikers of all time, chosen perhaps to conjure up images of the mountains of Vermont (the Green Mountain state) and the accompanying riot of fall color sugar maples bring to that breathtaking landscape each October. But a name will only take you so far (see Pop-Tarts, Lucky Charms cereal, and the horn-shaped snack Bugles, all also introduced in 1964). And as we now know, 'Green Mountain' had more going for it than just a catchy name. It grew tall and wide, handled winters just fine thank you, and most importantly, produced stunning fall leaf color. Of course, fall leaf color can be unpredictable and variable in its expression, but 'Green Mountain' became known for "coloring up" regardless of site conditions. If 'Green Mountain' has a flaw it comes in the leaf tatter department. What's leaf tatter you ask? The late Dr. John Pair (Kansas State University) coined the term to describe the fraying and deterioration of leaves, primarily in response to wind. Unfortunately, unusually large leaves (more surface area to catch the wind) and exceptionally long petioles allows the foliage of 'Green Mountain' to get whipped around pretty good, causing it in some years to look a little bedraggled by seasons end. Now, you can help the situation by not planting 'Green Mountain' (or any sugar maple for that matter) on environmentally hostile sites such as those found along downtown Main Street, at the windswept soccer complex, or in the exposed entryway planting at the outskirts of town. And if you can remember sugar maples like their space, enjoy cool, moist soils, and don't mind a little shade in the afternoon, your investment in any sugar maple cultivar will be repaid many times over.
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