In 2020, a multi-state research project led by Drs. Karla Addesso and Jason Oliver of Tennessee State University was funded by the USDA-Specialty Crop Research Initiative to coordinate research on this pest group.
Olive trees are migrating north
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Olive trees are now available at most local garden centers and in most cases, have seemed to grow well in our local conditions.
The replacements
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Over-reliance on certain trees often prompts the need to turn to newer varieties in place of faltering favorites.
Researchers roundup
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Get to know the horticultural researchers at OSU and USDA Many programs focus on nursery, greenhouse, landscape and related crops at Oregon State University (OSU) and the Horticulture Crops Research Laboratory at the Agricultural Research Service (USDA ARS), the principal in-house research agency of the United States Department of Agriculture. Here are some of the […]
The tribulations of big trees
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Growing bigger trees that will flourish in a changing climate takes a long-game approach For decades, tree-lined streets across the country — largely in the Southeast — would erupt in the bright white blossoms of Callery pear trees (Pyrus calleryana) every spring. Affordable, fast-growing and easily shipped, the trees had become the darlings of landscapers, […]
The fight against flatheaded borers
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Oregon State University researchers from the Nackley (nursery) and Wiman (orchards) programs have teamed up with scientists from across the country to study the biology and management of flatheaded borers. Flatheaded borers are beetles, from the order Coleoptera and the Buprestidae family, that can be devastating pests of ornamental trees grown in nurseries, transplanted landscape trees, trees grown for wood or other products, and fruit and nut crops.
Getting the word out
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Growers take an interest in steering landscapers and end users to the right tree for the location No tree can grow best in the wrong place, and no location can be enhanced by the wrong tree. To that end, the flow of information between tree growers, and experts in the markets they serve, is critical […]
Knowing your cedar pests (Part 2)
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Part 2: Thuja, Juniperus and Cupressus It’s important to be aware of issues in the landscape and forest, as these can become problems in the nursery or for your customers. On the flip side, problems not detected in the nursery can become big issues when planted out at the customer’s end. Cedar trees have a […]
Know thy enemy
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Expert insect pest identification resources are available in Oregon The foundations of a good integrated pest management (IPM) plan are scouting, monitoring and identification — knowing where and when you have pests, and knowing exactly who those pests are. Scouting and monitoring techniques are straightforward. One can use tools like sticky cards, traps, bait plants, […]
A tree with a peel
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Despite some pest issues, birch trees provide a distinctive, well-loved look Sales of popular birch trees in Oregon plummeted in the early 2000s when the bronze birch borer made its way across the country and began attacking susceptible plants up and down the Willamette Valley. The voracious insect had been plaguing states in the Midwest […]
