Hydrangeas: Amending soil to lower PH, 1 by medinac

medinac wrote:
ecrane - I finally soil tested yesterday. This soil test runs on an ABC basis. C being everything is normal for nutrients. A, lacking nutrients. I soil tested three different bed areas and they all came up the same. I tested 6" down and the soil was nice and black but clumpy clayish.

PH - 7
Nitrogen - between A and B
Phosphorus - C
Potassium - less than A (yikes!)

Mainly, it's the azalea and the phlox that look poor and I'll post those pics. Last year both the Pink Beauty and Nikko Blue Hydrangea suffered chlorotic looking leaves (Pink Beauty this year is getting yellowing in its leaves too, picture is following.