Dutch elm disease is a relatively new disease for Seattle. Only in 2001-2002 the first case of Dutch elm disease was confirmed is Seattle. The Rocky Mountains to the East of Seattle have long managed to stop the disease from reaching this city. 

Seattle has a very special collection of elms. Young elms are rare, because for decades the city foresters anticipated the arrival of Dutch elm disease and thus planted only few elms. The elms there are few, but mainly relatively old elms, because Dutch elm disease has not yet devastated the elms yet. And these old elms are in many places beautiful street lining trees.

Seattle has the advantage of being able to prevent a huge onslaught of the disease, which in many other places already has minimised the numbers of elms remaining. This city gets a head start on the disease, because they can learn from others.

Thus from the beginning of the disease in the area the city has been very active in setting up a thorough prevention program. The program consists of regular check-ups, and injecting the most valuable trees with Dutch Trig. Up to today in the Dutch Trig® injected group no trees were lost jet.