HOW TO SPOT AN ELM
The elm’s distinctive shape can make its mark on the horizon, but can be confused with other
trees. April is one of the best times to identify an elm tree, with the bright green seeds making
the elm standout and easy to confirm. Characteristics vary depending on the type of elm, but
the three quick identification tips below are common to all. You can also view our video on
spotting the elm's distinctive blossom.
Assymetrical leaves with
jagged edges & pointed
tips
Grey-brown bark, with
deep fissures
Seeds with light green
paper thin wings by April,
turning brown & dropping
in May
SPOTTING DUTCH ELM DISEASE
Dutch elm disease (DED) is a fungus which blocks elm trees ability to distribute water,
resulting in the tree’s foliage dying. The fungus is spread by bark beetles as they feed on the
tree and by root systems to adjoining trees. The current strain of the pathogen, Ophiostoma
novo-ulmi, has been around since the 1960s but DED has been in the UK for many more years
in a less aggressive form. Read more on Forestry Commission website.
DED is most easily identified during the summer when infected trees can be identified by
yellowing and shriveled leaves. Towards the tips of infected branches, the leaves will be
brown as the infection gradually spreads down the infected branch. Infected branches often
have brown streaks under the bark that follow the wood grain. Although unlikely, DED can be
confused with the separate Elm Yellows disease. However whichever it might be, please report
the elm.
To report a diseased elm tree please contact your
Local Authority.
DED is most often spread by elm bark beetles as they
feed on the elm. However it can also be spread by root
grafting and infected pruning tools.