Editing Hydrangea (section)

===In culture===
In Japan, ''[[Amacha|ama-cha]]'' ({{lang|ja|甘茶}}), meaning sweet tea, is another herbal tea made from ''[[Hydrangea serrata]]'', whose leaves contain a substance that develops a sweet taste ([[phyllodulcin]]). For the fullest taste, fresh leaves are crumpled, steamed, and dried, yielding dark brown tea leaves. Ama-cha is mainly used for ''kan-butsu-e'' (the [[Buddha]] bathing ceremony) on April 8 every year—the day thought to be Buddha's birthday in Japan. During the ceremony, ama-cha is poured over a statue of Buddha and served to people in attendance. A legend has it that on the day Buddha was born, nine [[dragon]]s poured [[Amrita]] over him; ama-cha is substituted for Amrita in Japan.

In [[Korean tea]], ''[[Hydrangea serrata]]'' is used for an [[herbal tea]] called ''sugukcha'' ({{lang|ko|수국차}}) or ''isulcha'' ({{lang|ko|이슬차}}).

The pink hydrangea has risen in popularity all over the world, especially in Asia. The given meaning of pink hydrangeas is popularly tied to the phrase "you are the beat of my heart," as described by the celebrated Korean florist Tan Jun Yong, who was quoted saying, "The light delicate blush of the petals reminds me of a beating heart, while the size could only match the heart of the sender!"<ref>{{cite web |url=http://www.rollmagazine.com/archive/oct11/articles/garden.php |title=Hydrangeas, Hydrangeas, Hydrangeas - Roll Gardening & Green :: Roll Magazine: Creative Living in the Hudson Valley |website=www.rollmagazine.com |access-date=31 May 2018}}</ref>

''Hydrangea quercifolia'' was declared the official state wildflower of the U.S. state of [[Alabama]] in 1999.<ref>State Botanical SymbolsBy Alan McPherson, p.3</ref>

Hydrangeas were used by the [[Cherokee]] people of what is now the Southern U.S. as a mild diuretic and cathartic; it was considered a valuable remedy for stone and gravel in the bladder.<ref name="Library of Congress">{{cite book |last1=Hylton |first1=William H. |title=The Rodale herb book: how to use, grow, and buy nature's miracle plants |date=1974 |publisher=Rodale Press Book Division |location=Emmaus, Pa. |isbn=0-87857-076-4 |page=474 |oclc=610291480 |edition=Eighteenth Printing — September 1979 |url=https://www.worldcat.org/oclc/610291480 }}</ref>

[[Extrafloral nectaries]] were reported on hydrangea species by Zimmerman 1932, but Elias 1983 regards this as "doubtful".<ref>{{cite journal |date=2012-10-18 |first1=Marjorie G. |last1=Weber |first2=Kathleen H. |last2=Keeler |title=The phylogenetic distribution of extrafloral nectaries in plants |pages=1251–1261 |doi=10.1093/aob/mcs225 |journal=Annals of Botany |eissn=1095-8290 |volume=111 |issue=6|pmc=3662505 }}</ref>

<!-- ===Bee-friendliness===
Hydrangea variants vary in bee-friendliness and their ability to feed pollinators. In general, common hydrangeas are not bee-friendly because their flowers are sterile, e.g. ''Hydrangea macrophylla hortensis'' (''mophead'') and ''H. paniculata'' (''limelight'').
Those that give food for bees and pollinators are: 
* ''Hydrangea anomala petiolaris''
* ''Hydrangea arborescens'': Smooth hydrangeas are versatile and spectacular, and can be used in a variety of landscape settings, including foundation plantings, perennial gardens, hedges, cut flower gardens, naturalising, pollinator, and wildlife gardens.
* ''Hydrangea aspera'': 
* ''Hydrangea mycrophylla'': Bigleaf hydrangeas are classic choices for flower gardens, cottage gardens, and seaside plantings. They can also be used for low hedges or edging, and they offer a splash of color to foundation plantings.
* ''Hydrangea paniculata'' (''grandiflora''): Panicle hydrangeas are the most sun-tolerant and wilt-resistant of the hydrangeas. It's perfect for Specimen plantings, mixed borders, and mass plantings. It can be used as a hedge or a screen. Excellent for both fresh and dried cut flowers.
* ''Hydrangea quercifolia'': Oakleaf hydrangea blooms on old growth. It thrives in damp, well-drained environments. In colder climates, winter protection may be required. Shrub with a deciduous appearance. Apply a slow-release fertiliser formulated for trees and shrubs in the early spring. -->