Maple tree dripping sap

1 ANSWERS

1. hawlija
   

   Your maple tree has aphids and the sticky stuff is "honeydew".  Aphids feed on the sugars produced in plants and transported in the phloem.  The phoelm is under pressure and when the aphids feed the pressure basically forces its way through the aphid and out it's butt.  It is this "honeydew" that drips on cars.  Then sooty mold grows on the "honeydew".  Very annoying.
   
   As far as control goes there really is not any practical method and this can be cyclical as this is the first time you have had this problem after a couple of years.

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