1. New info on the EAB (Emerald Ash Borer) as of Jan. 2011

    January 27, 2011 by MAX

    Coalition for Urban Ash Tree Conservation
    – Emerald Ash Borer Management Statement –
    www.emeraldashborer.info/files/conserve_ash.pdf
    signed 06 Jan 2011
    We the undersigned strongly endorse ash tree conservation as a fundamental component of integrated programs to
    manage emerald ash borer (EAB) in residential and municipal landscapes. Cost-effective, environmentally sound EAB
    treatment protocols are now available that can preserve ash trees through peak EAB outbreaks with healthy canopy
    intact. Used in association with tree inventories and strategic removal / replacement of unhealthy ash, tree conservation
    will help retain maximum integrity and value of urban forests. This integrated approach to urban EAB management is
    supported by university scientists with expertise in EAB management, commercial arborists, municipal foresters, public
    works officials, and non-governmental organizations (NGOs).
    Emerald ash borer has killed millions of ash trees since its
    discovery in 2002 and the number of dead ash is increasing
    rapidly. Ash species are abundant in planted and natural
    areas of urban forests, representing 10 – 40% of the canopy
    cover in many communities.
    Ash trees provide substantial economic and ecosystem
    benefits to taxpayers, ranging from increased property
    value, to storm water mitigation, to decreased energy
    demands (http://www.coloradotrees.org/benefits.htm).
    Consequently, widespread ash mortality in urban forests
    and residential landscapes is having devastating economic
    and environmental impacts. Indeed, EAB is predicted to
    cause an unprecedented $10-20 billion in losses to urban
    forests over the next 10 years.
    (http://ncrs.fs.fed.us/pubs/jrnl/2010/nrs_2010_kovacs_001.pdf)
    After its initial discovery, regulatory agencies attempted to
    eradicate EAB through removal and destruction of all ash
    trees in infested areas. Unfortunately, this proved
    unsuccessful and was soon abandoned.
    Since then, university scientists have developed and
    refined treatment protocols that can protect healthy ash
    trees from EAB and help conserve the urban forest.
    However, despite availability of cost-effective treatments,
    many municipalities, property managers, and homeowners
    continue to rationalize tree removal as the only viable
    management strategy for EAB. This is based on erroneous
    beliefs that tree removal slows the spread of EAB, or that
    treatment is not effective, economical, or environmentally
    sound. Current science supports conservation via treatment as
    a sensible and effective tool for managing healthy ash trees in
    urban settings. In many cases, tree conservation is
    economically and environmentally superior to tree removal.
    Based on research conducted by university scientists, and
    careful review of the potential impacts on human health
    and the environment, the Environmental Protection
    Agency (EPA) has registered three systemic insecticides
    for control of EAB – dinotefuran is registered for basal
    trunk bark or soil application, emamectin benzoate for
    trunk injection only, and imidacloprid for soil application
    or trunk injection.
    When applied using formulations, products, and protocols
    documented as effective by university research, these
    treatments can provide environmentally sound control of
    EAB, sufficient to maintain a functional and aesthetically
    pleasing ash canopy.

    White ash, 2-3 yr infestation of EAB

    Coalition for Urban Ash Tree Conservation EAB Management Statement Signed — 06 Jan 2011


  2. Conifers (such as pine and spruce) add much needed colour to our drab winter landscapes.

    January 25, 2011 by MAX

    Now, during these cold winter days do we see the value in adding conifers such as pine, spruce, and hemlock to our landscapes. They add the green to an otherwise monochromatic environment. They also add height and wind break in open areas. Consider White pine (P. strobus), Canadian Hemlock (Tsuga), Scotch Pine (P.Syvestris) for a species hardy for our area.

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    Thuja, prefers moist areas.

    'Hoar' frost in Glen Ellyn Il