Work a balanced fertilizer such as 8-8-8, 10-10-10, or 12-12-12 into garden soil at a rate of two pounds per hundred square feet. Later--early to mid-July--begin to use liquid fertilizer every three weeks (weekly for spreading petunias).
Welcome to Delaware County, PA! Your one-stop source for everything local in Delaware County  from photos to county history to the latest in Delaware County real estate, local businesses, entertainment, museums, shopping, guides, & much, much more... Named for the Delaware River, Delaware County is one of 67 counties in Pennsylvania. Delco, a fast-growing county located just southwest of the city of Philadelphia, has 49 unique municipalities with a total population of 558,979 (2010 census).
New Castle County. New Castle County is the northern most of Delaware's three counties - the smallest in area, but the largest in population. The county occupies 494 square miles and has an approximate population of about 550,000 residents. New Castle County sits in the middle of the Mid-Atlantic Region with Pennsylvania to the north, Maryland to the west, the Delaware River and New Jersey to the east, and Kent County, Delaware to the south.