Dean Nicolle
@deannicolle1.bsky.social
Eucalyptologist (gum nut). Botanist, arborist, ecologist & author, specialising in the eucalypts.
Landscapes / wildlife / science / biodiversity / climate / fire / conservation / evolution / wilderness / taxonomy
Currency Creek Arboretum
www.dn.com.au
Landscapes / wildlife / science / biodiversity / climate / fire / conservation / evolution / wilderness / taxonomy
Currency Creek Arboretum
www.dn.com.au
A story on our backyard swimming pool-to-pond conversion: au.news.yahoo.com/couples-fant...
Couple's 'fantastic' backyard pool transformation inspires Aussies
Many Aussies are now wondering if they can achieve the same 'sensational' results at their home. Find out more.
au.news.yahoo.com
November 16, 2025 at 3:29 AM
A story on our backyard swimming pool-to-pond conversion: au.news.yahoo.com/couples-fant...
The new BOM site is a shemozzle. Dumbed-down information and impossible to find actual weather data. A massive step backwards for such an important service.
October 22, 2025 at 7:48 AM
The new BOM site is a shemozzle. Dumbed-down information and impossible to find actual weather data. A massive step backwards for such an important service.
Currency Creek Arboretum open days for 2026 are now scheduled!
The world's most diverse collection of eucalypts is only open to the public twice a year, at our biannual open days. Details here: www.dn.com.au/Currency_Cre...
The world's most diverse collection of eucalypts is only open to the public twice a year, at our biannual open days. Details here: www.dn.com.au/Currency_Cre...
October 22, 2025 at 6:35 AM
Currency Creek Arboretum open days for 2026 are now scheduled!
The world's most diverse collection of eucalypts is only open to the public twice a year, at our biannual open days. Details here: www.dn.com.au/Currency_Cre...
The world's most diverse collection of eucalypts is only open to the public twice a year, at our biannual open days. Details here: www.dn.com.au/Currency_Cre...
We're all set up and ready to go for the arboretum open days THIS WEEKEND! Come and see the world's most diverse collection of eucalypts, with over 800 species growing on the one site.
About an hour's drive south of Adelaide in SA. Open day details here: www.dn.com.au/Currency_Cre...
About an hour's drive south of Adelaide in SA. Open day details here: www.dn.com.au/Currency_Cre...
October 10, 2025 at 9:12 AM
We're all set up and ready to go for the arboretum open days THIS WEEKEND! Come and see the world's most diverse collection of eucalypts, with over 800 species growing on the one site.
About an hour's drive south of Adelaide in SA. Open day details here: www.dn.com.au/Currency_Cre...
About an hour's drive south of Adelaide in SA. Open day details here: www.dn.com.au/Currency_Cre...
Less than 2 weeks until our arboretum open days! Here's a few of the eucalypts flowering at the moment.
These free open days only occur biannually. Currency Creek Arboretum is about an hour's drive south of Adelaide in SA. Open details here: www.dn.com.au/Currency_Cre...
These free open days only occur biannually. Currency Creek Arboretum is about an hour's drive south of Adelaide in SA. Open details here: www.dn.com.au/Currency_Cre...
September 30, 2025 at 8:01 AM
Less than 2 weeks until our arboretum open days! Here's a few of the eucalypts flowering at the moment.
These free open days only occur biannually. Currency Creek Arboretum is about an hour's drive south of Adelaide in SA. Open details here: www.dn.com.au/Currency_Cre...
These free open days only occur biannually. Currency Creek Arboretum is about an hour's drive south of Adelaide in SA. Open details here: www.dn.com.au/Currency_Cre...
Carnivorous plants are always pretty cool, and we are lucky enough to have large populations of four different sundew (Drosera) species at the arboretum.
D. whittakeri (Whittaker's sundew)
D. glanduligera (scarlet sundew)
D. auriculata (tall sundew)
D. macrantha subsp. planchonii (climbing sundew)
D. whittakeri (Whittaker's sundew)
D. glanduligera (scarlet sundew)
D. auriculata (tall sundew)
D. macrantha subsp. planchonii (climbing sundew)
September 26, 2025 at 9:36 AM
Carnivorous plants are always pretty cool, and we are lucky enough to have large populations of four different sundew (Drosera) species at the arboretum.
D. whittakeri (Whittaker's sundew)
D. glanduligera (scarlet sundew)
D. auriculata (tall sundew)
D. macrantha subsp. planchonii (climbing sundew)
D. whittakeri (Whittaker's sundew)
D. glanduligera (scarlet sundew)
D. auriculata (tall sundew)
D. macrantha subsp. planchonii (climbing sundew)
Reposted by Dean Nicolle
A unique partnership between an artist and a botanist has resulted in an old rail corridor in South Australia becoming an eucalypt forest.
Forest rail trail grows from artist and tree scientist's seedling deal
A unique partnership between an artist and a botanist has resulted in an old rail corridor in South Australia becoming an eucalypt forest.
www.abc.net.au
September 19, 2025 at 11:18 PM
A unique partnership between an artist and a botanist has resulted in an old rail corridor in South Australia becoming an eucalypt forest.
"Perth had its wettest winter in 30 years. Why aren't its dams full?" An insightful and alarming news article by the ABC:
www.abc.net.au/news/2025-09...
www.abc.net.au/news/2025-09...
September 13, 2025 at 11:29 PM
"Perth had its wettest winter in 30 years. Why aren't its dams full?" An insightful and alarming news article by the ABC:
www.abc.net.au/news/2025-09...
www.abc.net.au/news/2025-09...
Reposted by Dean Nicolle
Discover the wildlife that call eucalypt hollows home in this stunning poster series by Paula Peeters! 🌳 Now featuring 4 ecosystems, incl. the new WA Wheatbelt Woodland. Explore + order here: paperbarkwriter.com/12967-2
#LoveAGum #TreeHollowThursday
#LoveAGum #TreeHollowThursday
July 10, 2025 at 2:32 AM
Discover the wildlife that call eucalypt hollows home in this stunning poster series by Paula Peeters! 🌳 Now featuring 4 ecosystems, incl. the new WA Wheatbelt Woodland. Explore + order here: paperbarkwriter.com/12967-2
#LoveAGum #TreeHollowThursday
#LoveAGum #TreeHollowThursday
Caught a flock to 20-odd yellow-tailed black cockatoos shredding the large woody fruits of Eucalyptus youngiana and the branches of drooping she-oaks at the arboretum.
They certainly are efficient at shredding fruits and branches in search of seeds and grubs!
They certainly are efficient at shredding fruits and branches in search of seeds and grubs!
July 21, 2025 at 7:13 AM
Caught a flock to 20-odd yellow-tailed black cockatoos shredding the large woody fruits of Eucalyptus youngiana and the branches of drooping she-oaks at the arboretum.
They certainly are efficient at shredding fruits and branches in search of seeds and grubs!
They certainly are efficient at shredding fruits and branches in search of seeds and grubs!
Eucalyptus rhodantha (rose mallee) at Currency Creek Arboretum today.
The operculum (bud cap) is here shedding to reveal the stamens (the pink, thread-like structures which form the colourful part of most eucalypt flowers) and the anthers (the tiny, pale yellow 'dots' which produce pollen).
The operculum (bud cap) is here shedding to reveal the stamens (the pink, thread-like structures which form the colourful part of most eucalypt flowers) and the anthers (the tiny, pale yellow 'dots' which produce pollen).
July 20, 2025 at 6:27 AM
Eucalyptus rhodantha (rose mallee) at Currency Creek Arboretum today.
The operculum (bud cap) is here shedding to reveal the stamens (the pink, thread-like structures which form the colourful part of most eucalypt flowers) and the anthers (the tiny, pale yellow 'dots' which produce pollen).
The operculum (bud cap) is here shedding to reveal the stamens (the pink, thread-like structures which form the colourful part of most eucalypt flowers) and the anthers (the tiny, pale yellow 'dots' which produce pollen).
This year's spring open days at Currency Creek Arboretum will be on Sat 11 & Sun 12 October 2025.
Learn about the research we are doing in the most diverse collection of eucalypts on the planet (over 800 species!) Free entry and tours. Open Day details here: www.dn.com.au/Currency_Cre...
Learn about the research we are doing in the most diverse collection of eucalypts on the planet (over 800 species!) Free entry and tours. Open Day details here: www.dn.com.au/Currency_Cre...
July 15, 2025 at 7:42 AM
This year's spring open days at Currency Creek Arboretum will be on Sat 11 & Sun 12 October 2025.
Learn about the research we are doing in the most diverse collection of eucalypts on the planet (over 800 species!) Free entry and tours. Open Day details here: www.dn.com.au/Currency_Cre...
Learn about the research we are doing in the most diverse collection of eucalypts on the planet (over 800 species!) Free entry and tours. Open Day details here: www.dn.com.au/Currency_Cre...
A well-developed root-plate and lignotuber in a planted spotted gum (Eucalyptus maculata) in Adelaide.
Sure, the tree has displaced the concrete kerb, but it is well worth it to have such a large, structurally-sound tree providing so much shade, cooling, wildlife and amenity to this streetscape.
Sure, the tree has displaced the concrete kerb, but it is well worth it to have such a large, structurally-sound tree providing so much shade, cooling, wildlife and amenity to this streetscape.
July 8, 2025 at 7:01 AM
A well-developed root-plate and lignotuber in a planted spotted gum (Eucalyptus maculata) in Adelaide.
Sure, the tree has displaced the concrete kerb, but it is well worth it to have such a large, structurally-sound tree providing so much shade, cooling, wildlife and amenity to this streetscape.
Sure, the tree has displaced the concrete kerb, but it is well worth it to have such a large, structurally-sound tree providing so much shade, cooling, wildlife and amenity to this streetscape.
Following on from my earlier post, here are a few more sites, this time from east of Adelaide (Murray Bridge, Monarto, Callington), showing the impacts of the 'green drought'.
And these are all considered to be relatively drought tolerant species - mallee box, sheoaks, Callitris, olive trees...
And these are all considered to be relatively drought tolerant species - mallee box, sheoaks, Callitris, olive trees...
July 4, 2025 at 12:21 PM
Following on from my earlier post, here are a few more sites, this time from east of Adelaide (Murray Bridge, Monarto, Callington), showing the impacts of the 'green drought'.
And these are all considered to be relatively drought tolerant species - mallee box, sheoaks, Callitris, olive trees...
And these are all considered to be relatively drought tolerant species - mallee box, sheoaks, Callitris, olive trees...
Depressing pics of remnant pink gum & SA blue gum woodland on the Fleurieu Peninsula in South Australia.
This 'green drought' is caused by record low rainfall followed by some winter rain. Here we are seeing vegetation change in progress, caused by rapid climate change.
This 'green drought' is caused by record low rainfall followed by some winter rain. Here we are seeing vegetation change in progress, caused by rapid climate change.
July 3, 2025 at 10:48 PM
Depressing pics of remnant pink gum & SA blue gum woodland on the Fleurieu Peninsula in South Australia.
This 'green drought' is caused by record low rainfall followed by some winter rain. Here we are seeing vegetation change in progress, caused by rapid climate change.
This 'green drought' is caused by record low rainfall followed by some winter rain. Here we are seeing vegetation change in progress, caused by rapid climate change.
Unusually vibrant bark in Eucalyptus maculata (spotted gum) at Currency Creek Arboretum.
Known as 'ginger syndrome', it is caused by the bark overheating and desiccating from severe drought stress. It will be interesting to see if these trees recover or continue to deteriorate after some rain.
Known as 'ginger syndrome', it is caused by the bark overheating and desiccating from severe drought stress. It will be interesting to see if these trees recover or continue to deteriorate after some rain.
June 19, 2025 at 6:45 AM
Unusually vibrant bark in Eucalyptus maculata (spotted gum) at Currency Creek Arboretum.
Known as 'ginger syndrome', it is caused by the bark overheating and desiccating from severe drought stress. It will be interesting to see if these trees recover or continue to deteriorate after some rain.
Known as 'ginger syndrome', it is caused by the bark overheating and desiccating from severe drought stress. It will be interesting to see if these trees recover or continue to deteriorate after some rain.
Eucalyptus crebra (narrow-leaved red ironbark) in the Warrumbungles of central NSW.
June 15, 2025 at 4:48 AM
Eucalyptus crebra (narrow-leaved red ironbark) in the Warrumbungles of central NSW.
Just back from three weeks of eucalypt fieldwork in NSW. The state has 3 subspecies of river red gum (E. camaldulensis), which differ from one another most notably in the bud shape.
🔲⬛⬛ subsp. camaldulensis
⬛🔲⬛ subsp. arida
⬛⬛🔲 subsp. acuta
🔲⬛⬛ subsp. camaldulensis
⬛🔲⬛ subsp. arida
⬛⬛🔲 subsp. acuta
June 9, 2025 at 2:13 AM
Just back from three weeks of eucalypt fieldwork in NSW. The state has 3 subspecies of river red gum (E. camaldulensis), which differ from one another most notably in the bud shape.
🔲⬛⬛ subsp. camaldulensis
⬛🔲⬛ subsp. arida
⬛⬛🔲 subsp. acuta
🔲⬛⬛ subsp. camaldulensis
⬛🔲⬛ subsp. arida
⬛⬛🔲 subsp. acuta
Why it's currently so dry across southern SA and western Vic, and the long-term prognosis for similar conditions:
www.abc.net.au/news/2025-05...
www.abc.net.au/news/2025-05...
Rainfall maps offer ominous insight where Australia's climate is headed
As South Australia and Victoria continue to face drought and unseasonable heat, there has been a notable absence of major rain systems. So, what's going on?
www.abc.net.au
May 8, 2025 at 1:10 AM
Why it's currently so dry across southern SA and western Vic, and the long-term prognosis for similar conditions:
www.abc.net.au/news/2025-05...
www.abc.net.au/news/2025-05...
Dust-filled air on a warm, dry, windy May day at Currency Creek Arboretum.
May 4, 2025 at 8:54 PM
Dust-filled air on a warm, dry, windy May day at Currency Creek Arboretum.
Near-dead, drought-stressed trees of Eucalyptus eremophila at Currency Creek Arboretum, plus a bonus flowering photo of what it looks like when healthy!
The name 'eremophila' literally means 'desert loving', but the species is not loving the record dry conditions here at the moment...
The name 'eremophila' literally means 'desert loving', but the species is not loving the record dry conditions here at the moment...
April 29, 2025 at 5:45 AM
Near-dead, drought-stressed trees of Eucalyptus eremophila at Currency Creek Arboretum, plus a bonus flowering photo of what it looks like when healthy!
The name 'eremophila' literally means 'desert loving', but the species is not loving the record dry conditions here at the moment...
The name 'eremophila' literally means 'desert loving', but the species is not loving the record dry conditions here at the moment...
Does Australia really have a ‘cost of living’ crisis? Or do we actually have an inequity crisis?
Seems that many people can still buy big, new, expensive (& unnecessary) things at will, while many others can’t afford essentials like shelter & groceries.
Seems that many people can still buy big, new, expensive (& unnecessary) things at will, while many others can’t afford essentials like shelter & groceries.
April 27, 2025 at 10:57 PM
Does Australia really have a ‘cost of living’ crisis? Or do we actually have an inequity crisis?
Seems that many people can still buy big, new, expensive (& unnecessary) things at will, while many others can’t afford essentials like shelter & groceries.
Seems that many people can still buy big, new, expensive (& unnecessary) things at will, while many others can’t afford essentials like shelter & groceries.