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Only some types of big leaf and mountain hydrangeas can change color in response to the presence of aluminum in the soil, not the soil pH. Forget about adding a penny, nails, coffee grounds, or ...
Hydrangeas are beautiful, resilient shrubs that are one of the few plants that can be grown from coast to coast! They have incredibly long bloom times from early summer to fall, and the papery ...
The Southern states fall nicely within the winter hardiness zones of hydrangeas, which range from USDA zones 3 to 9 for panicle and smooth hydrangeas, and zones 5 to 9 for bigleaf and oakleaf ...
Hydrangea flower color changes based on the pH in soil. As the graph depicts, soil with a pH of 5.5 or lower will produce blue flowers, a pH of 6.5 or higher will produce pink hydrangeas, and soil in between 5.5 and 6.5 will have purple hydrangeas. Hydrangea flower color can change based on the pH in soil.
Know your hydrangeas as to their color. In reality this is also like knowing your soil pH and how it varies across the landscape, how it colors. Find a harmony of colors with these hydrangeas
Floral color change can also be a result of an increase or decrease in pH. Hydrangea is a model genus for this particular chemical change in flowers. Floral pigments in Hydrangea are affected by the presence of aluminum ions in the soil, causing changes in flower color from red, pink, blue, light purple or dark purple.