BAKERSVILLE, N.C. — Jeff Pollard trudged up the steep slope and stopped at a desiccated, rust-brown tree. Two months earlier, workers had tagged this Fraser fir as ready for market.
It was going to be someone’s Christmas tree. But now it was dead.
“Never get paid back for this tree,” he said with a shrug. “Eleven years of work — gone.”
The culprit: Phytophthora root rot, a water mold that, once in the soil, makes it unfit for production.
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Pollard has been growing Fraser fir in these western North Carolina mountains for nearly 40 years. To him, it’s “the ultimate tree.”
But this persistent problem has him looking to a species from the birthplace of old Saint Nicholas himself for a possible alternative. And he’s not alone.
Growers in Oregon, the nation’s No. 1 Christmas tree producer, have been experimenting with the Turkish fir for more than 30 years. That species and the Nordmann fir, also native to Eurasia, have shown promising resistance to root rot.
“Phytophthora is a problem in most areas where true firs … are grown,” said Gary A. Chastagner, a plant pathologist and extension specialist at Washington State University. “It’s a national problem.”
Oregon’s Christmas tree production
was nearly 7 million harvested in 2007, the latest figures available from the National Christmas Tree Association.
North Carolina was a distant second, with around 3.1 million trees cut.
One study estimated potential losses to Oregon’s nursery and Christmas tree industries at up to $304 million a year if Phytophthora is not properly contained. Douglas and Noble fir are the dominant holiday tree species in the Pacific Northwest.
In North Carolina, Phytophthora costs farmers up to $6 million a year, said John Frampton, a Christmas tree geneticist at North Carolina State University in Raleigh.
To date, no fungicide has proved effective to control the mold on Christmas tree plantations. So once it’s in the soil, that’s it.
Pollard, who grows about 130,000 trees on several western North Carolina farms, said Phytophthora set in after Hurricane Fran in 1996 and got worse after 2004’s Hurricane Ivan. He’s lost about a quarter of his trees over the past six seasons, and the state rated the mortality on some of his stands at up to 80 percent.
“They’ll be good for growing grass,” he said as he stood overlooking several barren hilltop fields recently.
Researchers at Washington State and several other universities are hoping to unlock the secrets to some species’ rot resistance.
In a greenhouse on the campus of NC State, master’s student Will Kohlway looked over rows of fir seedlings that had been inoculated with Phytophthora. He’s looking for genes related to disease resistance in Turkish fir.
“And if we can identify the gene, maybe we can go out and … possibly we can speed up the hybridization and get something to the growers faster,” he said.
But what works in North Carolina might not help in the Northwest, where other species of Phytophthora are more common, said Chastagner.
Katie McKeever, a Ph.D. candidate in Chastagner’s lab at Washington State, is working under a U.S. Department of Agriculture grant to create a nationwide collection of Phytophthoras from Christmas trees to understand regional variation in pathogen populations.
The goal is to challenge various firs with different Phytophthoras to determine mechanisms of resistance and ultimately develop genetic markers that can be used to identify trees that are resistant to the disease, Chastagner said.
But until native trees can be modified to have greater resistance, Pollard and others are looking toward the other species.
Since 2004, Oregon growers have planted an average of 500,000 Nordmann and Turkish firs per year, with similar activity in Western Washington and the Inland Empire, said Chastagner. A three-year project by WSU Puyallup to identify superior sources of Nordmann and Turkish fir has resulted in the development of seed orchards for those species.
Pollard planted his first seedlings about six years ago and sold his first trees last year. He said his customers were “tickled to death.”
“We followed them all the way through, from when they put them up to when they took them down,” said Pollard. “And they were happy, and so now we’re sure of the tree.”
Of course, the Turkish fir is far from bulletproof.
It tends to bud out earlier than Fraser fir, making it vulnerable to late-season frosts. And deer find it irresistible.
“They’ll walk by Fraser fir to snack on the Turkish fir,” Frampton said with a chuckle.
After the success of his first sales, Pollard ordered enough Turkish fir seedlings from Oregon for a full rotation. He expects to plant them in the spring.
On a recent sunny afternoon, Pollard stood on a hillside as seasonal workers cut, baled and stacked trees — some of which he’s waited 17 years to harvest. Looking down, his hands were stained with fragrant sap.
“That sap, it kind of runs in your blood,” he said. “These Fraser fir are to the mountain people what the buffalo was to the Plains Indian. … These Christmas trees have kept family farms in families. And we’re very thankful for them.”
Pollard’s two sons, David and Jeff, have joined him in the business. At 61, he knows he has to prepare for the future.
“When we plant something, we’re not thinking about one president away or two presidents. Sometimes it’s three and four presidents down the road,” he said. “I’m banking on this tree to keep me in the Christmas-tree farming business.”