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"Smooth hydrangeas should be left to grow for several seasons then can take a hard pruning down to the ground in the spring," says Dillon. Old wood hydrangeas can be cut back by one third .
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 ...
Hydrangeas should be fertilized in early spring and fall, regardless of whether they've been transplanted. Related: 8 Mistakes You Should Never Make With Your Hydrangeas Frequently Asked Questions
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]
Hydrangea quercifolia flowers are borne in erect panicles 6–12 in (15.2–30.5 cm) tall and 3–5 in (7.6–12.7 cm) wide at branch tips. Flowers age in colour from creamy white, aging to pink and by autumn and winter are a dry, papery rusty-brown.
Some types of hydrangeas can be lifted and divided, but the best time to do this is spring. Our experts don't recommend lifting and dividing hydrangeas in the winter, as this can increase the ...
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