I'm Losing My Impatiens

May 29, 2014 – 12:37 pm

Healthy mound of impatiens.If you’ve been wondering what hit your usually reliable impatiens last summer, keep reading. A new disease, impatiens downy mildew, was probably to blame. Impatiens downy mildew is a new disease for Connecticut gardens. It is caused by a fungus-like pathogen (Plasmopara obducens) and was first observed on garden impatiens (Impatiens walleriana) in the United Kingdom in 2002. Prior to that, it was identified as early as 1897 on wild impatiens (jewelweed) in Vermont. In 2011, there were outbreaks of this disease in many states including CA, IL, IN, NY, MA, MN, and WI.Symptoms including lack of flowers, pale yellowing leaves, & defoliation. Before (L) and after (R). ary 2012, it was confirmed on plants in the landscape in Florida. During the 2012 growing season, impatiens downy mildew has been widespread in over 30 eastern states including Connecticut.

Susceptible hosts include standard garden impatiens, double impatiens and mini-impatiens and any hybrids of I. walleriana. Although balsam or garden balsam (Impatiens balsamina) is also susceptible, the symptoms primarily include yellow leaf spots.Healthy mound of impatiens. e not susceptible to this disease nor are other shade tolerant bedding plants.

Early symptoms include yellowing or yellow stippling of the leaves (resembling spider mite injury (which isn’t common on garden impatiens) or lack of fertilizer), and downward cupping of upper leaves giving the appearance that plants need to be watered. As disease progresses, flowers and leaves drop, eventually leaving bare stems with a few small leaves at the top. Finally, the stems completely collapse and the plant dies. After a heavy rain, leaves may have a water-soaked appearance resembling frost injury. Plants infected when young will be stunted.

Symptoms include lack of flowers, yellowing and downward cupping leaves and defoliation (Right).

Source: uconnladybug.wordpress.com


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Flowers in a little to no sunlight area, color

We have a front flower bed that is about 35 ft x 2 ft on the north side of our home. just recently, after reading the western garden book, decided to do some landscaping and put in a variety of plants that include Canna's, New Zeland Flax, Sage mint, and added some color like Begonias & impatiens and some more. The issue is during summer, we get get a combined 3 to 4 hrs(morning and late after noon) of sun light in the area. Now, it is almost down to 2 hrs, and not every plant is getting enough sunlight. We are in zone 24 and wonder how these plants would do in fall and winter. In addition, wanted to put in some more color that are not potentially poisonous (lantan's are out of question)



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