Question
what can I do early in the season
Question:      I have had these trees for at least 10-12 years, for the last two years though as soon as the leaves reach their normal size, they have little brown spots shrivel up and fall off, so fast that less than one month to 6 weeks or so into the Spring Summer season they have no more leaves..

I have tried fertilizer, I have tried the anti insect liquid to feed to the bottom of the trees to their root system, but so far nothing seems to work....

I do not know if it is the environment suddenly, or some insects
that cause this kind of a disease. In the fall I cut down the trees to a smaller size but now I am wondering what I can do.

Is there a commercial product that I can spray the trees with, or would a mixture of soap and vinegar have some results.... I love these trees, they bloom beautifully, get all their leaves and look perfect and boom one or two weeks later the first leaves come down. I am sweeping leaves for many weeks....

Help please
Edith

Answer
Sounds like dogwood anthracnose a disease. This can be controlled with fungicides and cultural methods. Here is a link to information on dogwood anthracnose and the fungicide to use. Begin applying the fungicide at leaf out.  http://www.aces.edu/pubs/docs/A/ANR-0551/