Flanagan said he is identifying what trees to collect by reading Lewis and Clark's journals as well as gleaning information from Wayne Phillips's 2003 book Plants of the Lewis and Clark Expedition.
- Few Grizzlies Left on Land Traveled by Lewis and Clark
- Reliving Lewis and Clark: Surviving Winter Camp
- Reliving Lewis and Clark: Ascending the Missouri
- Reliving Lewis and Clark: Starting Out
- Reliving Lewis and Clark: Louisiana Purchase Ceremony
- Reliving Lewis and Clark: Up the Missouri Beyond Kansas
Through this reading, combined with research on the ground in Montana, Idaho, Oregon, and North and South Dakota, Flanagan has identified several state and national champions along the Lewis and Clark trail and other trees of historical importance.
Together with Milarch, Flanagan will collect cuttings from about 30 trees over the course of the next six weeks, between Fort Mandan in North Dakota and the Pacific Coast. They hope to collect more tissue from the Fort Mandan-to-St. Louis leg of the journey in 2005.
"[Lewis and Clark] didn't get back to St. Louis until 1806," Flanagan said. "We're getting a good start on this. To run this trip in six weeks and do it justiceit can't be done without possibly a huge amount of people."
To create clones, the nurserymen generally graft buds from the parent trees onto rootstock of the same species.
Terry Mock, executive director of the Champion Tree Project International in West Palm Beach, Florida, said individual trees are like individual people, the genetics of each are different. As a result, some trees clone easily, others don't.
"If you succeed in cloning the first time, which you don't always do, it's between a five- and seven-year period before you have a commercial quantity of trees available," he said.
The ultimate goal of the Champion Tree Project International is to plant clones of the champions in urban centers around world, where they have the genetic potential to outlast average urban trees, which have an average lifespan of just seven to ten years.
As the team works toward achieving their goal, they undertake projects such as the Lewis and Clark expedition project. They'll plant clones of these historically significant trees in highly visible locations to raise awareness of the project.
In addition to the Lewis and Clark project, the arborists have cloned historically significant trees at George Washington's Mount Vernon estate in Virginia, Thomas Jefferson's Monticello in Charlottesville, Virginia, and Teddy Roosevelt's Sagamore Hill estate on Long Island, New York.
For the Lewis and Clark trees, Milarch said he is hoping to find a prominent home for them in St. Louis, Missouri.
"Wouldn't it be cool to know our great, great grandchildren will walk under and camp under these historic old-growth trees?" Milarch said.
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