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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 ...
Although big leaf hydrangeas need sun to bloom well, give them afternoon shade in hot regions. Also, most varieties bloom on old wood, so prune just after the flowers have faded.
Throw Hydrangeas Some Shade. Hydrangeas can often thrive in shaded ... while basic soil will turn them a more pink color," she advises. ... Purple/blue and pink: 6-6.5 Pink: 7.0 or higher. To make ...
Hydrangea serrata is best grown in rich, medium moisture, well-drained soils in partial shade. It tolerates full sun only if grown with consistently moist soils. Soil pH affects the flower color in the same manner as it does with H. macrophylla — namely, bluish in highly acidic soils and lilac to pink in slightly acidic to alkaline soils.
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.
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]
Many can handle full sun, which is considered 6 or more hours of direct sunlight. However in the south, hydrangeas do best with morning sun and afternoon shade, says LeCompte.
The leaves are broadly oval, toothed and 7–15 cm (3–6 in) long. In late summer it bears large conical panicles of creamy white fertile flowers, together with pinkish-white sterile florets. Florets may open pale green, grading to white with age, thus creating a pleasing "two-tone" effect. [5]