KEW GARDENS, LONDON:
Strategic Priority 1
To document and conduct research into global plant and fungal diversity and its uses for humanity.
Strategic Priority 2
To curate and provide data-rich evidence from Kew’s unrivalled collections as a global asset for scientific research.
Strategic Priority 3
To disseminate our scientific knowledge of plants and fungi, maximising its impact in science, education, conservation policy and management
https://www.youtube.com/watch?v=g4-EkRL-J2M
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sábado, 1 de outubro de 2016
segunda-feira, 18 de outubro de 2010
Viveiros Tropicais de Kew Gardens
The nursery provides facilities for propagating, establishing and growing on plants from various habitats within the world’s tropical and subtropical regions. There are over 45,000 plants held here at any one time. The plants are produced to support the public conservatories for educational purposes and may by used for scientific purposes by visiting and Kew scientists.
The nursery covers an area of 6,500m2 and is divided into 21 climatic environments that are separately controlled and monitored by a ‘climatic computer’. These zones are collected under four units: Cacti and Succulents, Moist Tropics, Orchids, plus Temperate and Conservation Collections. The large wide-span complex is heated by nine gas-fired boilers, although not all are used together. The nursery is supplied with water filtered by a process called ‘reverse osmosis’ for irrigation and misting. The water is stored in a large tank potentially holding 60,000 gallons. It passes through an ultra-violet filter before being used.
Fifteen permanent staff work in the Tropical Nursery, supported by up to ten students, apprentices, trainees and 28 horticultural volunteers. Daily maintenance of the collections involves watering, feeding, re-potting plants, and monitoring plant health throughout the year. Then there are regular seasonal jobs. The giant waterlilies start their life here, before being planted out in the Waterlily House for the public to see. And Kew’s specimens of Titan arum (Amorphophallus titanum) rest dormant in the Nursery until they flower and are put on display for visitors to see and smell.
Foto: Costus woodsonii
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08:01
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Amorphophallus titanum,
Costus woodsonii,
Futuro dos Jardins Botânicos,
Kew Gardens,
Londres,
MNHN,
Viveiros
sábado, 16 de outubro de 2010
Estufas de Exibição em Kew: Alpine House
Historical information
There has been an Alpine House at Kew since 1887. The first house was built to a traditional design with brick foundations, wooden sides and a low-pitched glass roof. Potted plants stood on wooden platforms either side of a central path. This house was demolished and rebuilt to a longer wider design in 1939. A third Alpine House replaced it in 1981. With glass sides and roof, this was constructed using the state-of-the-art technology of the time. Its built-in systems were designed to control temperature, ventilation and moisture levels, while its pyramid shape reflected the mountain landscapes from which its inhabitants came.
Meeting the needs of alpine plants
Meeting the needs of alpine plants
In the wild, alpines spend the winter dormant. They remain dry and protected from extreme temperatures and the desiccating effect of cold winds by a blanket of snow. Spring arrives rapidly, with melting snow providing moisture for growth and exposing the plants to intense light. The short growing season means plants have to flower and set seed quickly. The Davies Alpine House was designed to create the cool, dry and windy conditions that alpine plants favour, without using energy-intensive air-conditioning and wind pumps. Its architects employed traditional practices and the latest technology to achieve this.
Although the glasshouse is only 16 metres long, its roof reaches ten metres high. This creates a stack effect that draws in cool air through permanent openings on either side and releases warm air through vents in the roof. Meanwhile, a fan blows air through a concrete labyrinth beneath the ground. The air cools on its convoluted journey and is released into the glasshouse through steel pipes. The panes of glass are 12mm thick and have a low iron content which allows over 90 per cent of light through. Meanwhile, fan-like shades on the east and west sides of the glasshouse protect plants from the most intense heat of the summer sun.
Behind the scenes
Behind the scenes
Kew’s Alpine House team has built up a large collection of plants over time. Ranging from cushion plants from high-mountain environments to colourful bulbs from the Mediterranean, these are nurtured in the Alpine Nursery by four permanent staff and a trainee. Only when plants come into bloom and are looking their best do they go on display in the Alpine House. All the plants are grown in pots, enabling staff to provide the soil and watering regime that best suits each species.
During hot summers in the old Alpine House the temperatures often exceeded 40°C. However, in the new glasshouse the temperatures generally remain below 32°C. According to Alpine House Keeper Richard Wilford, the plants used to look straggly from the reduced light after a two-week stint on display in the old Alpine House. Now, they thrive in the more favourable conditions and return to the Alpine Nursery looking as healthy as when they left.
Things to look out for
Things to look out for
Throughout the year, the Davies Alpine House displays a wide range of campanulas, dianthus, small ferns, helichrysum, small lavenders, primulas, saxifrage, thymes, tulips and verbascums along with lesser-known species. One of the glasshouse’s rarest occupants is the Chilean Blue Crocus, Tecophilaea cyanocrocus. It has scented cobalt blue flowers with a white centre. Described in 1862, it was only known to grow in the range of hills surrounding Santiago, at about 3,000m. The plant was regarded as extinct in the wild from the 1950s onwards – due to unsustainable collecting by bulb dealers, overgrazing by cattle and localised habitat change – but was rediscovered in 2001 on private land south of Santiago.
Nota: inaugurada em 2006, esta belíssima estrutura é a última estufa de exibição construída em Kew. São estruturas desta qualidade e utilidade que a LAJB imagina no futuro para o nosso Jardim Botânico. Não aceitamos que se vá destruir a actual estufa do Jardim Botânico (obsoleta e degradada) para no lugar dela nascer uma "Galeria comercial". Afinal qual é a missão de um Jardim Botânico no séc. XXI?
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Amigos do Jardim Botânico
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18:08
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Alpine House,
Estufas,
Kew Gardens,
Londres,
Plano de Pormenor,
Reino Unido
quinta-feira, 14 de outubro de 2010
Estufas de Exibição em Kew: Princess of Wales Conservatory
The vast Princess of Wales Conservatory recreates ten climatic zones under one roof. Beneath its sloping glass roof, visitors can wander among Madagascan baobob trees, observe climbing vanilla orchids from Central America and watch carnivorous plants from Asia eating flies for lunch.
Historical information
The Princess of Wales Conservatory was commissioned in 1982 to replace a group of 26 smaller buildings that were falling into disrepair. It was named after Princess Augusta, founder of Kew, and opened in 1987 by Diana, Princess of Wales.
It is the most complex conservatory at Kew, containing ten computer-controlled climatic zones under one roof. The two main climate zones are the ‘dry tropics’, representing the world’s warm, arid areas, and the ‘wet tropics’, housing moisture loving plants from ecosystems such as rainforests and mangrove swamps. The eight remaining microclimates include a seasonally dry zone containing desert and savanna plants, plus sections for carnivorous plants, ferns and orchids.
Whereas the Palm and Temperate Houses make grand statements with their designs, the low-lying, angular ‘glazed hill’ of the Princess of Wales house is less obtrusive. The conservatory was designed by architect Gordon Wilson to be energy-efficient and easy to maintain and was built partly underground. The southern end is heated more by the sun than the northern end, so this is where visitors find towering spikes of echiums and silver agaves from dry tropical regions such as the arid Canary Islands. The central area contains an elevated aquaria, complete with waterlily pond and the dangling roots of mangroves, plus displays of orchids and carnivorous plants. At the northern end are species from the moist tropics, including banana, pineapple, pepper and ginger.
Things to look out for
The pond within the aquaria section contains the Asian form of the giant waterlily Euryale ferox. This plant has huge leaves that can span two metres and are strong enough to take the weight of baby without sinking. On the lower level, there are viewing windows so visitors can see the pond from a fish’s eye view. Close by are separate tanks containing a rhombeus piranha, poison-dart tree frogs and baby water dragons. These displays demonstrate how plants and animals interact in their natural tropical rainforest habitats. Towards the northern end of the glasshouse, are some familiar houseplants originating from the wet tropics. These include the African violet (Saintpaulia) and Swiss cheese plant (Monstera deliciosa). Once a year, the Princess of Wales glasshouse hosts a festival celebrating the beauty of tropical orchids. Kew’s orchid collection numbers some 1500 species, and staff working its micropropagation laboratory are becoming adept at bringing rare species back from the brink of extinction.
Behind the scenes
Keeping the Princess of Wales Conservatory’s plants in good shape requires much hard graft behind the scenes. Manager of the glasshouse Mike Marsh and his team clean out the pools in Spring, develop outdoor displays such as the Mediterranean Garden in Summer, top up the glasshouse’s soil and replant beds in Autumn, and prune plants throughout the winter.
Nota: Outro exemplo notável de Estufa de Exibição, neste caso num novo e moderno edifício inaugurado em 1987. O Jardim Botânico de Kew tem actualmente quatro estufas de exibição, sendo duas históricas erguidas no séc. XIX e as restantes construídas recentemente, esta em 1997 e a última em 2006 (Alpine House).
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12:28
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Estufa de Exibição,
Estufas,
Kew Gardens,
Londres,
Plano de Pormenor
terça-feira, 12 de outubro de 2010
Estufas de Exibição em Kew: Temperate House
Kew director Sir William Hooker commissioned Decimus Burton to begin work on the glasshouse in 1859. With voracious Victorian collectors bringing back ever more species from around the globe, Kew needed somewhere to house its growing collection of semi-hardy and temperate plants. The Temperate House was officially opened, unfinished, in 1863. Because costs had soared during construction, it was not completed for another four decades.
Today, Kew’s Temperate House is arranged according to Decimus Burton’s original plan. The South Wing and Octagon are home to African plants, the main rectangular hall hosts sub-tropical trees and palms, while the North Wing and Octagon contain temperate plants from Australia, New Zealand, Asia and the Pacific. A boiler in the nearby Stable Yard helps keep the temperature to a minimum 10°C all year round. The sun provides a little extra warmth for the heat-loving South African plants at the southern end of the glasshouse.
Things to look out for
Things to look out for
Many of the plants growing in the Temperate House are useful to us. There is a collection of fruit-yielding citrus plants that includes lemon and lime, a tea bush (Camellia sinensis) from which the nation’s favourite brew is made and a specimen of Cinchona which is used as a treatment for malaria. The traditional African Hut located at the southern end of Temperate House shows how indigenous people put local plants to use as building materials.
The sheer size of the Temperate House has made it the final resting place for many plants that have outgrown other parts of the Gardens at Kew. The largest of these is the Chilean Wine Palm, Jubaea chilensis. When it was last measured in 1985, it was 17.6 metres (58 feet) high and is still slowly growing today. It was raised, two decades before the Temperate House was built, from a seed brought to Kew from Chile. The wine palm’s seeds are edible, its sap is used as a sweetener and its leaves make an excellent roofing thatch.
Plants on the verge of extinction
Plants on the verge of extinction
Some plants on display are endangered island species being propagated for reintroduction to their native lands. Among these is the St Helena ebony tree (Trochetiopsis ebenus). By 1980 only two specimens were left in the wild, clinging to a steep rock face on the island. Cuttings from these came to Kew for propagation. Several thousand plants have since been reintroduced at six sites on the island. Kew scientists are now helping islanders develop protocols for propagating other rare plants. You can find out how Kew save plants under threat at the Millennium Seed Bank.
Conservation and restoration
When Decimus Burton designed the Temperate House he chose the best materials available to him at the time. Nonetheless, by the early 1970s the glasshouse was in a sorry state. It had suffered structural damage during the last war. A survey of the structure in 1972 revealed corroding wrought iron and disintegrating masonry. Workmen spent three and a half years renovating the glasshouse. Because the building is Grade I listed, they had to retain its architectural integrity. Modern aluminium glazing bars replaced timber sashes, a teak annex added in 1952 was dismantled and a new boiler house in the nearby Stable Yard replaced the original one installed beneath the glasshouse.
Nota: Mais um belíssimo exemplo de uma "Estufa de Exibição", neste caso concreto para plantas de Clima Temperado. O nosso Jardim Botânico precisa de estufas de exibição para cumprir em plenitude a sua missão.
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Estufa de Exibição,
Estufas,
Kew Gardens,
Londres,
Plano de Pormenor,
Reino Unido,
Temperate House
domingo, 10 de outubro de 2010
Estufas de Exibição em Kew: Palm House
Heating was an important element of the glasshouse’s design, as tropical palms need a warm, moist environment to thrive. Originally, basement boilers sent heat into the glasshouse via water pipes running beneath iron gratings in the floor. A tunnel ran between the Palm House and the Italianate Campanile smoke stack that stands beside Victoria Gate. This 150-metres-long (490 ft) passage served the dual purpose of carrying away sooty fumes to be released from the chimney and enabling coal to be brought to the boilers by underground railway. Today, the glasshouse is heated using gas and the tunnel houses Palm House Keeper Wesley Shaw’s office.
Originally, palms, cycads and climbers were planted in large teak tubs or clay pots that sat atop benches above the iron gratings. However, in 1860, two large central beds were dug and the tallest palms planted in them. Subsequently, most of the glasshouse’s plants were dug into beds to form a miniature indoor tropical rainforest. Today, the tallest palms that need the most room are located beneath the central dome. These include the peach palm (Bactris gasipaes), babassu (Attalea speciosa), queen palm (Syagrus romanzoffiana) and the coconut palm (Cocos nucifera).
Conservation and restoration
The Palm House was first restored between 1955 and 1957 when its glazing bars were cleaned and the entire house re-glazed. At this time the boilers were converted to oil and moved close to the Italianate Campanile. Between 1984 and 1988 a more comprehensive overhaul was undertaken. The Palm House was emptied for the first time in its history, with most plants moved to other glasshouses. Those that were too large were cut down and used to make specimens for the Herbarium and Museum. Under direction of the Property Services Agency, the Grade I Listed building was completely dismantled, restored and rebuilt. Ten miles of replica glazing bars made of stainless steel were put in place to hold new panes of toughened safety glass. The restoration took as long to finish as the glasshouse took to build.
Things to look out for
Highlights in the South Wing, which contains plants from Africa and the Indian Ocean Islands, include the African oil palm (Elaeis guineensis) the most important oil-producing plantation palm in the Tropics and the rare triangle palm (Dypsis decaryi) from Madagascar.
The main central section houses plants from the Americas, including many economically important species. You’ll find cocoa, rubber, banana and papaya plants growing here alongside the Mexican yam (Dioscorea macrostachya) which was used to develop the contraceptive pill. The North Wing showcases plants from Asia, Australasia and the Pacific, the region that contains the world’s greatest diversity of palms. Here you’ll find climbing palms called rattans from which cane furniture is made. Also, there are several Asian fruit trees including mango, starfruit, breadfruit and jackfruit.
Marine Display
Housed, in the basement of the Palm House, the display recreates four major marine habitats, emphasising the importance of marine plants.
Nota: O Jardim Botânico de Kew em Londres, líder na sua área e classificado pela UNESCO como Património Mundial da Humanidade tem quatro estufas de exibição sendo a Palm House a mais antiga.
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Cocos nucifera,
Dypsis decaryi,
Elais guineensis,
Estufas,
Kew Gardens
sábado, 10 de janeiro de 2009
KEW GARDENS: «A NATURAL HISTORY»
When did Kew’s own past begin? 2009 is being billed as the 250th anniversary and will be celebrated in February by an enhanced version of the Tropical Extravaganza, Kew’s tropical flower and orchid festival, and in August through a photography competition for all comers, who can submit their pictures of any botanical garden in the world. Kew will also be delivering a Darwin Treasure Chest to every primary school in the UK as part of an even bigger project called the Great Plant Hunt, which wants “to help children explore the natural world around them”. Tobacco and poppy-juice are not included.
The date of the 250th anniversary is not calculated from the first surge of gardening on Kew’s site, however. Earlier in the 18th century, the area to the west of London had begun to be landscaped by royalty, especially by the eager Frederick, then Prince of Wales under King George II. Kew was one of a cluster of fine sites along the nearby Thames, which individual royals were laying out as green retreats from the smell and bustle of their residences in the capital. Prince Frederick died from the chill that he caught during a soaking day’s work in his Kew garden but his widow, the energetic Princess Augusta, continued their joint venture on the site and by 1759 had appointed the first specialised head gardener. One of his jobs was to look after her plantings of medicinal plants and herbs and as a result the garden at Kew was first called “botanical”. It is this part of the initiative that modern Kew treats as a foundation date.
Like many keen gardeners, I have admired Kew’s commitment to science but wondered if it has had much of a commitment to the gardening that I love. One of its great projects is its Millennium Seed Bank, which aims to host and save a high proportion of the seeds to be found in partner-countries around the world. Very few of them are much use to gardeners because the majority derive from tropical dry-lands and cannot be grown outdoors.
Kew is committed to “sustainability” but the only “sustainable” garden in Britain would be one full of nettles and ground elder. I admire hybrid plants whereas Kew concentrates on wild forms. I have had a nasty feeling that deep down the scientists have thought that flower gardeners are extravagant and not central to Kew’s botanical purpose.
I have also not envied modern Kew its challenges. It has had to confront crises that could easily have crippled it. They have ranged from the thunder of aircraft using Heathrow airport to Thatcherism at its least forgiving. Even Kew’s famous past began to turn against it: under the famous Hooker family in the Victorian era, the garden was a leader in overseas plant-collecting when botanical display was linked with the power of the British Empire: the empire then fell and the removal of plants by foreigners was attacked as “colonialist”. Above all, the climate has started to warm but heating is still essential in the huge tropical glasshouses. How does such a consumption of fuel relate to modern Kew’s declared scientific mission of encouraging sustainability in plantings around the world?
On a garden bench beside spurge plants in mid-winter, I put these doubts to Nigel Taylor, longtime servant of Kew’s best interests and now the director of horticulture, with responsibilities for a garden staff of 150. We had just walked through the big rock garden, object of my critical eye after many years’ experience. I shared my doubts and memories with Taylor. My views were not unfounded because I really know how to put the gardening back into the phrase “botanical gardening”. Most modern directors of such gardens are scientists or even bureaucrats and have little idea about the potential of the outdoor, public side of their enterprise. Kew’s two recent directors have been scientists of exceptional distinction and freely admitted that gardening was really not their expertise. Sir Ghillean Prance is a revered expert on worldwide conservation, particularly famous for his championing of rainforests, and Peter Crane is a scientist of equal distinction who once even proposed that I tell him what to do with the garden as it was not his field. It was after dinner but he was not entirely joking.
My first job was as an outdoor worker in the vast alpine garden of the botanical garden in Munich under the legendary direction of Wilhelm Schacht, a super-hero who had even laid out an alpine garden for the last king of Bulgaria. The Munich garden’s only European equal was and is Edinburgh’s, now back on top form after a wobble from envious bureaucrats in the early 1990s. When I returned to England after a transforming period in German public service I naturally went straight to Kew to compare ideas.
It was autumn 1965 and with youthful eagerness I hunted down a senior employee among the boulders of Kew’s own rock garden. A botanic garden, the expert Allen Paterson remarks in his good new book The Gardens at Kew, may be defined “as a place where a wide range of plants are collected and grown and where they are all labelled, mostly correctly”. In 1965, there were many more labels than alpines on the Kew rock garden. It looked like a graveyard for former cushion plants. The most conspicuous residents were non-alpine cotoneasters hugging the rocks. I asked my senior what hours he worked, explaining that I had worked a 44-hour week for 82 Deutschmarks, beginning with a departmental check-in at 6.45am. “Christ,” he replied, “the Germans had the better of you. Here we take out the wheelbarrow at 8.30am but by the time we get to the rock garden we somehow find a tyre is flat. We go back to find the man who signs out the tyre-pump and by the time we have found him and it, it is time to have our mid-morning break.” The rest of the day went by in such calculated footling and I remember wondering if he was being played by Peter Sellers in a horticultural sequel to the British comedy film I’m All Right, Jack.
Taylor listened to my memories as echoes from a legendary past. In 1984, Mrs Thatcher ruled that Kew could no longer expect full public funding and must learn to stand on its own economic feet. The entrance fee went up from a traditional sixpence to nearer £10. I felt sorry, except for dodgers in the rockery department, and reckoned Kew would sell up. With hindsight, Taylor thinks it was a blessing. Kew could no longer simply “tolerate” its public visitors. The central scientific mission is mostly conducted away from the garden visitors’ gaze but nowadays it needs the entry fees from the garden to meet its costs. The results include realistic workers and unions, scores of volunteers, hundreds of thousands of newly planted bulbs and an excellent display of sculptures by Henry Moore last spring. Visitor figures have shot up and private and corporate sponsors have financed a new multiplication of displays. The garden’s biggest natural threats are no longer bolshy workers. They are the hordes of newly resident ring-necked parakeets, birds that were idolised when they first escaped into wild and warm south Britain but which now strip the buds off too many of Kew’s distinguished trees.
To prove the point, Taylor showed me the new glass-covered alpine house, a gift of businessman Edwin Davies, who made his fortune through an improved design for switches for electric kettles. He should be so proud of the displays of rare alpines when they are in flower without any need for electric heating. As for Kew’s heat-intensive greenhouses, Taylor countered me by observing that people cannot become keen to save the world’s endangered tropical plants unless they can also see them growing locally in cultivation. I am not a gardener who idealises “sustainability” because in Britain, I do not want a garden with nothing but weeds from the hedgerow. So long as Kew does not attack my garden’s range, I will go along with Taylor’s defence of his sweaty palm house.
I will certainly pay to support his new-style workforce. On a corner of the rock garden we found eight workers in shirt sleeves in mid-winter keenly shovelling new soil with spades shaped like the ones I used in Germany. If a big boulder needed shifting they set about it without a thought for the tyres on their barrows. Most of them were eager, muscular females. Happy anniversary, ladies. There is indeed a new source of energy at Kew and we should all pile in to support it. in Financial Times, 9-1-2009
FOTO: a famosa Palm House de Kew.
Etiquetas:
Financial Times,
Futuro dos Jardins Botânicos,
Kew Gardens,
Londres
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