hydrangea indicate soil acidity

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Florida DSC_5802

hydrangea indicate soil acidity

Location: 29°38'45" N, 82°27'53" W, 34m; near: Gainesville, map
Camera/lens: NIKON D7000, 17-50mm f/2.8
Aperture: 6.3, Shutter speed: 1/160, Focal length: 26.0 mm, ISO: 250, Bias: 0
Date/Time: 2015:05:16 08:37:25
Average color: dark olive green