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Hydrangeas tend to need more water. “It's important to give them one last thorough and deep water before the ground freezes," says Jackson. "Keep their compost slightly moist over the winter ...
Potted panicle and smooth hydrangeas can be overwintered outdoors only in hardiness zones 5-9, and bigleaf and oakleaf hydrangeas in zones 7-9. Container plants will need additional protection ...
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Hydrangea quercifolia, commonly known as oakleaf hydrangea or oak-leaved hydrangea, is a species of flowering plant in the family Hydrangeaceae. [2] It is native to the southeastern United States, in woodland habitats from North Carolina west to Tennessee , and south to Florida and Louisiana . [ 3 ]
Peegee hydrangea (Hydrangea paniculata): These are the easiest type to grow and are extremely cold-hardy. Annabelle hydrangea (Hydrangea arborescens): These are native to North America and cold hardy.
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.
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Raise your hand if you love hydrangeas. We knew we weren’t alone. These gorgeous flowering shrubs are some of the easiest and most satisfying to grow in your garden because of their long bloom time.