What People Say. 1  David Bush and Jim Parsons Authors, Fair Park Deco Fair Park is one of the finest collections of Deco architecture in the country, but it is so much more: the embodiment of Texan swagger, it is a testament to the Texanic task of creating a dazzling spectacle in the darkest days of the Depression..
Hydrangeas turn blue as a reaction to aluminum in the soil. The soil pH should be slightly acidic (5.2 - 5.5). Do a soil test first, to determine your starting pH. Adding aluminum sulfate to the soil will help lower its pH, if necessary. A word of caution: not all plants can tolerate acidic soil and neighboring plants may be adversely affected.
Tips. 1  Lime or the aluminum sulfate tablet should be available at your local garden center. 2  Control over the color is easier for potted hydrangeas than for ground-planted plants. 3  Don't try manipulating white hydrangeas; you can't change them. 4  Changing a hydrangea from pink to blue is easier than changing it from blue to pink. Lime or the aluminum sulfate tablet should be available at your local garden center. 2  Control over the color is easier for potted hydrangeas than for ground-planted plants. 3  In particular, forcing pink hydrangeas is easier in potted form. 4  Don't try manipulating white hydrangeas; you can't change them.