Sunday, September 2, 2012

Impatiens - Downy Mildew

A new diseases has spread into the Chicago area.  Downy Mildew of impatiens strips the leaves and flowers from the plants leaving a stalk like plant.  This disease has become an issue across the country, believed to have been spread by infected plants from the growers.  If you have infected plants, it is recommended that you not plant impatiens again in the same area the following year, but rotate to another plant.  Work is being done to see if some varieties of impatiens are resistant, but at this time only New Genia impatiens are.  For more info follow this link  from Cornell about Downy Mildew.

Downy Mildew affecting impatiens by #14 tee

Close up of Downy Mildew, no good control for this new disease.