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"In general, more acidic soil will turn them blue or bluish, while basic soil will turn them a more pink color," she advises. She provided this pH scale for hydrangea colors: Bright blue: 4.5
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.
But there are over 50 species of hydrangea worldwide offering vast variety in flower, form, and sun tolerance. “Most hydrangeas like part sun (4-6 hours of direct sun) or dappled shade,” says ...
Depending on the type, hydrangeas grow in USDA Hardiness zones 3 to 9 (find your zone here).Many can handle full sun, which is considered 6 or more hours of direct sunlight.
Hydrangea macrophylla by Abraham Jacobus Wendel, 1868. Hydrangea macrophylla is a species of flowering plant in the family Hydrangeaceae, native to Japan. It is a deciduous shrub growing to 2 m (7 ft) tall by 2.5 m (8 ft) broad with large heads of pink or blue flowers in summer and autumn. [2]
Hydrangea serrata is similar to H. macrophylla except it is a smaller more compact shrub with smaller flowers and leaves; it is also more hardy. With a rounded habit, it features dark green, serrated (toothed), ovate leaves to 15 cm (6 in) long, and clusters of long-blooming blue or pink lacy flowerheads in mid- to late summer.
Hydrangea serrata 'Tiny Tuff Stuff' USDA Hardiness zones: 5 to 9 Size: 18 to 24 inches tall and wide Mountain hydrangeas like this one have beautiful lacecap flowers which range from blue to pink ...
Hydrangea involucrata is a species of flowering plant in the family Hydrangeaceae, native to Japan and Taiwan. [1] It is a deciduous shrub growing to 1 m (3 ft) tall by 2 m (7 ft) broad, with oval leaves and clusters of blue or pink flowers in late summer.