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2. File:Hydrangea Flower Color Based on Soil pH.jpg - Wikipedia

   en.wikipedia.org/wiki/File:Hydrangea_Flower...

   English: Hydrangea flower color changes based on the pH in soil. As the graph depicts, soil with a pH of 5.5 or lower will sprout blue hydrangeas, a ph of 6.5 or higher will produce pink hydrangeas, and soil in between 5.5 and 6.5 will have purple hydrangeas.

3. Hydrangea - Wikipedia

   en.wikipedia.org/wiki/Hydrangea

   Hydrangea flower color can change 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. White hydrangeas cannot be color-manipulated by soil pH because they do not produce pigment ...

4. List of U.S. state and territory flowers - Wikipedia

   en.wikipedia.org/wiki/List_of_U.S._state_and...

   Oak-leaf hydrangea (state wildflower) Hydrangea quercifolia: 1999 [2] Alaska: Forget-me-not: Myosotis alpestris: 1917 [3] American Samoa: Paogo (Ulafala) Pandanus tectorius: 1973 [4] Arizona: Saguaro cactus blossom: Carnegiea gigantea: 1931 [5] Arkansas: Apple blossom: Malus: 1901 [6] California: California poppy: Eschscholzia californica: 1903 ...

5. No Front Yard Is Complete Without One of These Beautiful ...

   www.aol.com/growing-hydrangeas-5-main-types...

   Flower color: Creamy white, pink, purple, blue, green, and variegated. Hardiness Zones: 3 to 9. ... Hydrangea quercifolia 'Gatsby Pink' USDA Hardiness zones: 5 to 9 Size: 8 feet wide and tall.

6. Everything You Need to Know About Hydrangeas ... - AOL

   www.aol.com/lifestyle/everything-know-hydrangeas...

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7. Oakleaf Hydrangeas Are the Color-Changing Shrubs Your Garden ...

   www.aol.com/news/oakleaf-hydrangeas-color...

   Oakleaf hydrangeas aredifferent from other hydrangeas.Their leaves are shaped like oak leaves.They bloom in June with white flowers thatoften age into a beautiful pink or red color.But the real ...

8. pH indicator - Wikipedia

   en.wikipedia.org/wiki/PH_indicator

   Hydrangea macrophylla flowers can change color depending on soil acidity. In acid soils, chemical reactions occur in the soil that make aluminium available to these plants, turning the flowers blue. In alkaline soils, these reactions cannot occur and therefore aluminium is not taken up by the plant. As a result, the flowers remain pink.

9. Floral color change - Wikipedia

   en.wikipedia.org/wiki/Floral_color_change

   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. [ 4 ] There has been one non-chemical example found within Caesalpinioideae , a single sub-family of Fabaceae where the folding of petals cause changes to the color patterns ...