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Hydrangea (/haɪˈdreɪndʒiə/; common names hydrangea or hortensia) is a genus of 70–75 species of flowering plants native to Asia and the Americas. By far the greatest species diversity is in eastern Asia, notably Korea, China, and Japan. Most are shrubs 1 to 3 meters tall, but some are small trees, and others lianas reaching up to 30 m (98 ft) by climbing up trees. They can be either deciduous or evergreen, though the widely cultivated temperate species are all deciduous.
Having been introduced to the Azores, H. macrophylla is now very common, particularly on Faial, which is known as the "blue island" due to the vast number of hydrangeas present on the island.
‘Hydrangea’ is derived from Greek and means ‘water vessel’, which is in reference to the shape of its seed capsules. The earlier name, Hortensia, is a Latinised version of the French given name Hortense, referring to the wife of Jean-André Lepaute.
(EN) Macro of hydrangea flower.
(PT) Fotografia macro de uma hortência.
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Zellerbach Garden
San Francisco Botanical Garden ✿ Strybing Arboretum
Golden Gate Park, San Francisco
April 2021
Hydrangea flowers are produced from early spring to late autumn; they grow in flowerheads (corymbs or panicles) most often at the ends of the stems. Typically the flowerheads contain two types of flowers: small non-showy flowers in the center or interior of the flowerhead, and large, showy flowers with large colorful sepals (tepals). These showy flowers are often extended in a ring, or to the exterior of the small flowers. Plants in wild populations typically have few to none of the showy flowers, while cultivated hydrangeas have been bred and selected to have more of the larger type flowers.
The name Hydrangea is derived from Greek and means ‘water vessel’ (hydria), in reference to the shape of its seed capsules.
20210402_173144
All over Maine we saw beautiful Hydrangea Trees, bushes. hedges in full bloom. They were amazing! We have some Hydrangea bushes but they stay small. I don't know what variety these were but obviously you can train them into anything. This Hydrangea hedge outside of Augusta Maine borders a Cemetery and stands at least 8-10 ft tall!!!
Outside of Augusta Maine
Zellerbach Garden
San Francisco Botanical Garden ✿ Strybing Arboretum
Golden Gate Park, San Francisco
April 2021
Hydrangea flowers, when cut, dehydrate easily and wilt very fast due to the large surface area of the petals.
20210402_173131 Hydrangea at Zellerbach
I took this photo in my front yard, on September 21st in Plainfield. After recently moving and having greater yard space, I took the opportunity to plant my own garden. One of my favorite flowers to plant have been hydrangeas. Here, I have pictured a Bigleaf Hydrangea, or Hydrangea macrophylla. This plant can present in many different shades of blue and pink. Its phenotype depends on the pH of the soil. In more alkaline soils, the phenotype of the plant is pink, while acidic soil blooms a bluer flower. This kind of trait variability is present in many species of flowers. For example, Hydrangea paniculata, another plant in the same genus, starts off as a creamy white before transitioning to a strawberry red. Trait variability is affected by many factors, such as genetic differences and environmental factors. In the case of pink vs. blue flowers, the variation in trait comes from environmental factors – aluminum ions present in the soil. This specific type of Hydrangea macrophylla is also part of the Endless Summer collection. This collection was inspired by an adaptation of a new variety of hydrangea found in Minnesota in the 1980’s. The plant had adapted to survive the harsh winters and was able to rebloom. This was a rare trait that has been cultivated and tested to create a hardy plant that can bloom on old and new wood. This plant, like all others, is autotrophic and a primary producer. This means it can create its own carbon compounds from inorganic compounds. The process these plants use is called photosynthesis.