Weather for the beginning of June has actually been quite pleasant and mild, with some hot and humid days thrown in for good measure. Although the average across the region has been moderate with a little less than an inch of accumulated precipitation, some areas experienced unsettled weather including some strong thunderstorms. Soils in areas exposed to full sun may have dried out a bit, but lawns in parts of region which received rainfall are thriving and green. The continuing gradually warming temperatures have allowed for extended bloom periods and are now forcing some stubborn woody and herbaceous plants into bloom. On average 439 growing degree days have been added so far this season, and the soil temperatures have reached an average of 67 degrees. Of course as the growing season continues so do the potential problems, diseases have developed or are presenting in new life cycle stages. Discussed below are several currently being reported as active, this is, by no means, a complete list so make sure to contact your arborist with any questions, concerns or treatment needs.
Plant diseases may have many life cycle stages and multiple hosts so they may present differently in the late spring or early summer as air and soil temperatures rise and days grow longer and sunnier. These complex life cycles, morphological stages and multiple hosts can make identification and treatment tricky. Discussed below are some diseases which currently active. Your arborist will be able to properly assess disease on your landscape and recommend treatments and/or preventative measures.