History resources here... 1  Post history questions in Hancock County genealogy forum. 2  Historic maps of Kentucky. 3  Search the Library of Congress. 4  National Historic Landmark search. 5  Search the National Register for historic properties. 6  Historic maps of KY cities.
I inoculated nutrient agar with bacillus subtilis and it made a dark green colour on agar plates.
If aluminum is naturally in your soil and the pH is low, your hydrangeas are probably already blue. But even if you have naturally acidic soil, you may need to add some aluminum sulfate. Fertilizer - A high potassium, low phosphorus fertilizer helps maintain your blue color.