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Christmas Trees

Importance of Christmas Trees to Oregon

Oregon grows more Christmas trees than any other state in the country. It is 31% of the United States’ Christmas trees. There are more than 1,000 farms that grow the trees. Oregon sold over 4.5 million trees in 2017. Oregon grown Christmas trees were worth 107 million dollars in 2020. The counties that grow the most are Benton, Clackamas, Marion, Polk, Yamhill, and Linn. They are all on the western side of the state.1

History of Christmas Trees

The first decorated Christmas tree can be traced back to 1510 in Riga, Latvia. Evergreen trees have been used for thousands of years to celebrate winter festivals. Small candles were added in the 17th century and electric lights became popular in 1890. Live Christmas trees have been commercially sold in the US since 1850. The White House has a National Christmas Tree each year.2

The top producing states are Oregon, North Carolina, Michigan, Pennsylvania, and Wisconsin.3

Christmas Tree Varieties

The top-selling species of Christmas trees in Oregon are Douglas fir, Noble fir, Grand fir and Nordmann fir. Other species sold include Fraser fir, Balsam fir, and pine trees. More than half of the Christmas trees sold in Oregon are Noble fir. Each species has different qualities like smell and branch style.

Douglas-Fir

Douglas-fir have been the top choice Christmas tree in the United States since the 1920s (but they aren’t the most popular tree in Oregon). The needles on a Douglas-fir stick out in all directions from the branch. They are a dark green to blue-green color and are soft. The needles have a sweet smell when they are crushed. 

Noble Fir

Noble fir is the most popular Christmas tree in Oregon. Their branches are evenly spaced and good for hanging ornaments. Noble fir needles look almost silver or grey-green. Another reason people like them is that they keep fresh for a long time. Their needles stay on better than some other species.

Grand Fir

Grand firs are native to Northern California and the Pacific Northwest. They are large trees and can be up to 230 feet tall. But that is if they aren’t grown to be Christmas trees. Their needles are thick, shiny, and a dark yellow-green color. They have a strong Christmas smell. 

Nordmann Fir

Nordmann fir also keep their needles very well after the trees have been cut. The needles are soft and pretty. These trees have become popular because they don’t have a strong smell. This means that people who have allergies or sensitive noses can enjoy Nordmann firs.4

Life Cycle of a Christmas Tree

Christmas trees are planted yearly so there are always trees ready for harvest at different sizes. The trees are anywhere from 1-3 years old when they are planted in a field. They are grown in a nursery or greenhouse before that. The seedlings are planted in rows in the ground during the spring. Christmas trees are planted by hand or by machine.5

 

The trees are mostly left alone during the first couple years of growth. Some farms will use fertilizer and pest control during that time. Some will not. Each year, starting at about 3, crews go through the trees with machetes or clippers and shear the tree. This means they are trimming the branches to help the tree be the cone shape we are used to.

Christmas Tree Harvest

Prep for harvest can begin in the summer. Some farmers will go through the trees and put a tag on the ones they want to harvest that year. They will choose trees that are healthy, shaped well, and meet the size requirements they need to fulfill. Christmas trees are usually 6-10 years old when they are harvested. Harvest will begin in early to mid-November. This is so Christmas trees can be in tree lots by Thanksgiving. Crews go through the trees and use a chainsaw to cut down the ones with tags. Sometimes they are taken out of the field with trucks, but other times the trees are lifted and flown by helicopter. The helicopters can get to places that trucks sometimes cannot. And they move trees much more quickly. 

Some farmers let people go to the farm and cut their own Christmas trees. This is usually called U-Cut.

Trees are shaken after harvest to remove loose needles and other unwanted material. Sometimes they are put through a baler and wrapped in netting to keep them compact and safe on the way to the lot. They are also tagged to indicate their height. After that, trucks will come to take the trees to their final destination where they will be picked out and taken home for Christmas.

Pests and Diseases

There are a number of pests and diseases that can damage Christmas trees. Environmental stress and weather can make these things worse at times. Farmers do their best to prevent pests and diseases from causing harm. Sometimes that means using an insecticide to kill or prevent bugs. Farmers can also change which species of trees are planted to help control and destroy some of the different types of fungus that some trees get and others don’t.

Armillaria Root Rot

Armillaria root rot can severely damage Grand fir and Douglas fir trees. This fungus can live in the soil and infect tree roots. The disease can cause the needles to turn yellow, cones to drop from the trees, and the trees to die. Armillaria root rot is common in low-quality seedlings and stressed trees.6

Conifer Aphid

Conifer aphids use their piercing-sucking mouths to damage Christmas trees. They feed on all parts of the tree, including trunks and roots, and branches and twigs. They leave a sticky material behind as they feed. The material is called honeydew. Other insects feed on the honeydew. Sooty mold can grow on the honeydew as well.7

Damping-Off

Damping-off is a disease that can happen in Christmas tree seedlings. It is caused by fungi known as Fusarium, Pythium and Rhizoctonia. Damping-off is most common in Douglas fir trees. It happens while they are in greenhouses or nurseries. Seedlings usually won’t germinate if they have the disease.8

Root Weevil

Root weevil can harm all of the popular Christmas tree species mentioned above. Larvae can cause crop damage by feeding on tree roots. Adult root weevils can girdle seedlings and small trees, removing bark. Root weevils can cause crop loss, but they can also hurt tree farmers in other ways. Some Christmas tree exporters will reject harvest loads if weevils are found.9

Uses for Christmas Trees

Christmas trees are used as decoration in homes during the winter holidays. They are often decorated with ornaments. Christmas tree branches can also be used for wreaths, swags, and other decor.

Fun Facts About Christmas Trees!

  • California receives about 45% of the Christmas trees grown in Oregon
  • More real Christmas trees are purchased each year than fake trees
  • Christmas trees are grown and harvested in all 50 states
  • Christmas trees can remove dust and pollen from the air

Vocabulary Terms

A machine to tightly bundle trees together with cord, wire, or netting. 

A person or company who sells trees to other countries. 

A simple organism, or living thing, that is neither a plant nor an animal. When there is more than one fungus they are called fungi.

To start or cause to start growth; sprout.

Remove the bark around a tree trunk.

A substance used to prevent or kill insect pests. 

A knife with a wide heavy blade, used to cut crops.

A young plant that is raised from a seed.

To cut off with scissors or a tool like scissors.

A group of living things that can reproduce with one another but not with those of other groups.

 

AITC Resources

The Holiday Spirit - Christmas Tree Story

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Merry Christmas, Geraldine

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Holiday Spirit - The Great American Christmas Tree

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Explore the Forest

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Related Resources and Sources

        1Oregon Department of Agriculture. “OREGON AGRICULTURAL STATISTICS.” October 2021. https://www.oregon.gov/ODA/shared/Documents/Publications/Administration/ORAgFactsFigures.pdf.
        2University of Illinois Extension. “Christmas Tree Facts.” Accessed December 2021. https://web.extension.illinois.edu/trees/facts.cfm.
        3Agricultural Marketing Resource Center. “Christmas Trees,” May 2018. https://www.agmrc.org/commodities-products/forestry/christmas-trees.
        4Holiday Tree Farms Inc. “Nordmann Fir Christmas Tree.” Accessed December 2021. https://www.holidaytreefarm.com/content.cfm/Our-Christmas-Trees/Nordmann-Fir. 
        5Michigan State University. “Planting.” Accessed December 2021. https://www.canr.msu.edu/christmas_trees/getting-started/planting. 
        6Pacific Northwest Pest Management Handbooks. “Fir, Douglas and True-Armillaria Root Rot.” Accessed December 2021. https://pnwhandbooks.org/plantdisease/host-disease/fir-douglas-true-armillaria-root-rot.
        7Baker, James. “Giant Conifer Aphids.” NC State Extension.  September 2019. https://content.ces.ncsu.edu/giant-conifer-aphids. 
        8Pacific Northwest Pest Management Handbooks. “Fir, Douglas and True-Damping-off.” Accessed December 2021. https://pnwhandbooks.org/plantdisease/host-disease/fir-douglas-true-damping. 
        9Oregon State University. “Root Weevil.” Accessed December 2021. https://pubs.extension.oregonstate.edu/em9093/root-weevil.