Latest news with #horticulturists
Yahoo
4 days ago
- Science
- Yahoo
Iconic Aussie park fights to save incredibly rare plant facing 'big threats'
An iconic Aussie park is fighting to save an incredibly rare plant that is facing 'big threats' as its population dwindles to just 85. The precious orchid — commonly known as the Northampton midget greenhood or western swan greenhood — can be found in just seven locations in Western Australia's midwest. Despite its reputation for being a 'tough survivor' due its ability to endure harsh summers and multi-year droughts, serious concerns for its survival have emerged in recent years due to habitat loss from historic land clearing for agriculture and the spread of invasive weeds. Threats to the species also include changes to hydrology and overland water flow, damage to habitat and plants by pigs, road maintenance and an increasingly drying climate. This has prompted scientists and horticulturists at Perth's Kings Park to take matters into their own hands. Rare orchid seeds collected from remaining seven wild locations Following unusually high rainfall in early 2021, more of the plants emerged from dormancy than previous years, providing experts with the perfect opportunity to gather Northampton midget greenhood (Pterostylis sinuata) seeds and fungi for propagation, Dr Belinda Davis, a research scientist for the Kings Park Science Program specialising in orchid conservation, told Yahoo News. 'Orchid species have complex symbiotic relationships with fungus species — at each stage of an orchid's lifecycle they are dependant on a fungus,' she explained. 'For many orchid species, this relationship is specific to a single fungus species. So it is critical that both orchid and fungus material are collected together.' To propagate, the seeds and the fungus were introduced to each other in a laboratory to 'encourage the symbiotic partnership' between the pair. Afterwards the seedlings were moved to the park's onsite glasshouses. 'The seed and fungi have also been placed in long-term secure storage in liquid nitrogen to ensure this material is available for conservation efforts in the future such as translocations,' Dr Davis said. 'Having plants growing in the glasshouse now means that we are able to study the species and better understand its ecology.' 🏝️ Man's 'spectacular' beach find Aussies can go years without seeing 🌸 Rare plant that grows in two places in the world found in secret Aussie location 🌱 Scientists stumble upon 'rare' Aussie bush flower thought extinct for 86 years What have scientists learnt so far? The Northampton midget greenhood had been previously collected but never successfully germinated, Dr Davis told Yahoo. During the propagation process, scientists found that not all of the fungi was able to germinate seed. 'Previous germination attempts did not have the 'right fungus' to enable germination,' Dr Davis explained. 'We now have the 'right fungus' in long-term storage, helping secure the future for this tiny plant.' And as of just this week, the first flowers are starting to form on the first plants in captivity. 'These precious plants will become the foundation of a seed orchard from which we will be able to keep harvesting precious seed and fungi without impacting on wild populations,' Dr Davis said. Love Australia's weird and wonderful environment? 🐊🦘😳 Get our new newsletter showcasing the week's best stories.
Yahoo
16-07-2025
- Science
- Yahoo
Kew Gardens' Palm House will close for five years for major makeover
It's a makeover on a massive scale - it involves moving 1,300 plants, replacing 16,000 panes of glass and cleaning up hundreds of tonnes of iron. This is the ambitious £50m plan to renovate the world-famous Palm House, which sits at the heart of the Royal Botanic Gardens Kew. The hot and humid conditions inside have taken their toll on the building, which opened in 1848 and houses a tropical rainforest. Kew will also use the refurbishment – which will see the glass house closed for five years from 2027 – to reduce emissions from the Palm House to net zero. The planning permission for the project has now been submitted, and some of the plants that make up the indoor tropical rainforest have started to be relocated. "This is probably the plant that I worry about moving the most," says Thomas Pickering, head of glasshouses. He's standing next to one of Kew's most precious specimens: a plant called Encephalartos altensteinii, which is a type of cycad. It's growing in a pot, and at 250 years old, it's older than the Palm House itself. It's also enormous - weighing more than a tonne and standing about 4m tall. "It's the sheer size of it. It has a huge weight in that root ball, but also this incredibly long stem, which is very old because they're incredibly slow-growing plants," says Pickering. The horticulturists will use scaffolds, supports and braces to protect the plant when the time comes for it to be moved. Other plants, that are a bit easier to shift, have already been taken to a temporary greenhouse. "It's going to be a long term project," explains Pickering. "And over the next two years, it's going to be a process of selecting which plants we need to containerize (place in pots) and keep, which ones we need to propagate - and also some of the plants will be felled because we won't be able to move them." The Palm House was built more than 175 years ago and was a wonder of the Victorian age. No-one had ever constructed a glass house on that scale before and the engineers borrowed techniques from the shipping industry to build the huge structure. It was last renovated in the 1980s, but now the iron is heavily rusting in places, so it will be stripped back to the bare metal work, repaired and repainted. All of the thousands of single glazed panes of glass will be replaced and tests are underway to find the best type of glass to provide maximum insulation. Maintaining the Palm House's temperature at 21C uses a lot of energy, but now gas boilers will be replaced with air source and water source heat pumps. "This is an incredibly challenging building to make net zero," said Rachel Purdon, head of sustainability at Kew. "We can do a huge amount with things like sealing the glass and improving the heating systems to massively reduce the carbon footprint and improve the sustainability of the Palm House without impacting the aesthetics." The Water Lily House, which is located next to the Palm House, will also be made over as part of the renovation. The public will still be able to visit both for the next two years before they're closed for the works. The team at Kew acknowledges this will be a big undertaking that will have a temporary impact on people coming to their botanic gardens. But they say the results will be worth it. "The really important aspect of this is to try and ensure that the structure can last as long as possible, before we have to do another refurbishment," says Rachel Purdon.
BBC News
15-07-2025
- General
- BBC News
Kew Garden: Palm House set for major renovation
It's a makeover on a massive scale - it involves moving 1,300 plants, replacing 16,000 panes of glass and cleaning up hundreds of tonnes of is the ambitious £50m plan to renovate the world-famous Palm House, which sits at the heart of the Royal Botanic Gardens hot and humid conditions inside have taken their toll on the building, which opened in 1848 and houses a tropical will also use the refurbishment – which will see the glass house closed for five years from 2027 – to reduce emissions from the Palm House to net zero. The planning permission for the project has now been submitted, and some of the plants that make up the indoor tropical rainforest have started to be relocated. "This is probably the plant that I worry about moving the most," says Thomas Pickering, head of standing next to one of Kew's most precious specimens: a plant called Encephalartos altensteinii, which is a type of growing in a pot, and at 250 years old, it's older than the Palm House itself. It's also enormous - weighing more than a tonne and standing about 4m tall."It's the sheer size of it. It has a huge weight in that root ball, but also this incredibly long stem, which is very old because they're incredibly slow-growing plants," says horticulturists will use scaffolds, supports and braces to protect the plant when the time comes for it to be moved. Other plants, that are a bit easier to shift, have already been taken to a temporary greenhouse. "It's going to be a long term project," explains Pickering."And over the next two years, it's going to be a process of selecting which plants we need to containerize (place in pots) and keep, which ones we need to propagate - and also some of the plants will be felled because we won't be able to move them." The Palm House was built more than 175 years ago and was a wonder of the Victorian had ever constructed a glass house on that scale before and the engineers borrowed techniques from the shipping industry to build the huge was last renovated in the 1980s, but now the iron is heavily rusting in places, so it will be stripped back to the bare metal work, repaired and of the thousands of single glazed panes of glass will be replaced and tests are underway to find the best type of glass to provide maximum insulation. Maintaining the Palm House's temperature at 21C uses a lot of energy, but now gas boilers will be replaced with air source and water source heat pumps."This is an incredibly challenging building to make net zero," said Rachel Purdon, head of sustainability at Kew."We can do a huge amount with things like sealing the glass and improving the heating systems to massively reduce the carbon footprint and improve the sustainability of the Palm House without impacting the aesthetics."The Water Lily House, which is located next to the Palm House, will also be made over as part of the renovation. The public will still be able to visit both for the next two years before they're closed for the works. The team at Kew acknowledges this will be a big undertaking that will have a temporary impact on people coming to their botanic gardens. But they say the results will be worth it."The really important aspect of this is to try and ensure that the structure can last as long as possible, before we have to do another refurbishment," says Rachel Purdon.
