Category Archives: Trees

  • The Autonomous Collective MN fall planting event

    Make plans to plant this spring

    Make plans to plant trees this spring – they are needed now more than ever! The more than 100 million trees that died in California after being weakened by drought and insect infestations have transformed large swaths of the Sierra Nevada into browned-out tree cemeteries. In some areas more than 90 percent of trees are […]

  • lightning strike

    Lightning strike

    One of my favorite weather forecasting websites is Weather Bug.  Like most forecasting, it’s not always correct but it gives a rough idea. It’s Spark component shows where lightning is active and how far away it is. One of our customer’s white pine had a very close encounter with lightning. This tree is roughly 18” […]

  • Hey! What’s wrong with my Aspen?

    My aspen is really looking sick. It was fine thru July and then started turning black. Would you take a look and let me know what you suggest? It’s definitely not a watering issue. The leaf blackening is caused by a non lethal fungal leaf disease called marsonina. It is usually a problem seen in […]

  • What are these orange trees?

    Do we have orange trees in Minnesota? Yes, kind of, we do have trees in Minnesota that are orange.  However, they are hawthorn trees that have turned orange due to a non-harmful disease called quince rust.  Some refer to the disease as cedar apple rust but that’s a little different.  Quince rust infects the hawthorn […]

  • Sawfly, don’t bother me

    Dear Vineland Tree Care: What’s eating my pine ? Sawfly larvae were feeding on your bristle cone pine, which is a very cool tree choice by the way.  The larvae eat needles down to the fascicle, the sheath that hold the bundled needles together.  Later in the year, the winged sawfly lays eggs (and earns […]

  • Ash Anthracnose

    Anthracnose is a catch all phrase to describe leaf and shoot disease on many types of trees and shrubs.  In green ash trees anthracnose appears, usually in the spring, as sudden leaf loss.  A wet spring, along with the presence of the fungus, contributes to anthracnose severity.  Fallen leaves are usually smaller, they may have […]

  • Iconic Sequoia is No More

    It sad to hear of an ancient tree falling over.  More amazing is that after being damaged by fire and human cleverness it stood for another hundred years or more.  Trees can’t run from threats so they adapt a little and adapt a little more to abuse — This ability is why trees are the longest […]

  • Bird populations might benefit from the Emerald Ash Borer in our Trees

    I recently read the 2013 study, titled Effects of emerald ash borer EAB on four species of birds by Koenig, Liebhold, Bonter, Hochacka, and Dickinson from Cornell Lab of Ornithology with great interest.  In Michigan they found both red bellied woodpecker and white breasted nuthatch populations increased in areas of and EAB infestation from 2005 – […]

  • Woodpeckers and Emerald Ash Borer

                    At the Northern Green conference in January of 2017 Mark Abrahamson, Assistant Director of the  Minnesota Department of Agriculture, presented copious evidence of the direct correlation between woodpecker damage to ash trees and an Emerald Ash Borer (EAB) infestation. Woodpecker damage is described in two ways: Flecking, […]

  • Have you met the Emerald Ash Borer?

    In January of 2017 I attended the Northern Green, an annual green industry get together, and it’s Master Classes for tree geeks. The dangers of standing ash trees falling apart due to heavy infestations of emerald ash borer (EAB), was one of the main themes of the conference. The effect of EAB, an agrilus beetle […]