From www.usna.usda.gov/Gardens/faqs/hydrangeafaq2.html: "For most bigleaf hydrangea cultivars, blue flowers will be produced in acidic soil (pH 5.5 and lower), whereas neutral to alkaline soils (pH 6.5 and higher) will usually produce pink flowers. Between pH 5.5 and pH 6.5, the flowers will be purple or a mixture of blue and pink flowers will be found on the same plant."
I don't believe it - in our neighbourhood and at Hase Dera, there are many different colours next to each other. I suppose that the different varieties have different responses to the acidness. A typhoon is going over presently. Perhaps it will squash all the pompoms!
-- Posted By Blogger to jules' pics at 6/19/2012 09:04:00 PM