Browse resources

Displaying 101 - 106 of 106 resources

Do you know what galls me? Cynipid wasps

Cynipid wasps cause unsightly, but not fatal plant galls.

Jul 2017 | Article

America's largest diameter tree

With a 38-foot diameter, the Tule Tree is even bigger than the largest sequoia. It's estimated to be 1,500 and lives next to a church in Mexico.

Max Bennett | Jul 2017 | Article

Conifers naturally shed needles in summer and fall

You're not looking at the same needles over time

Kym Pokorny | Oct 7, 2016 | News story

Strapping a Tree (in English)

Stephen Fitzgerald and Paul Ries explain how to strap a recently planted tree.

Paul Ries, Stephen Fitzgerald | Nov 2015 | Video

Ideal tree varieties for planting near powerlines?

P: I have a utility pole in my yard that I would like to disguise with an ornamental tree. I can't have a tree that grows too tall and was thinking about a dogwood. What would you recommend?

R: View answer | View all featured questions

Servicio de Extensión de OSU

Tree care