Information & resources about plants & gardens for Brisbane & Qld

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Welcome to Queensland's gateway to gardening - a collection of news, information, resources and ideas of interest to gardeners, especially residents of Queensland, Australia.

Get Results Gardening 14/12/18
In this edition:
      TOP PLANT: Angelonia
      BASICS: "Organic" - It Depends What You Mean
      ON TREND: Reef Madness?

Get Results Gardening is a weekly mini-magazine delivered via email. It offers high-quality gardening information for SE Qld while keeping the inexperienced and even the reluctant gardener in mind. Easy plants, timely tips, ideas, motivation. Get a 3 month free trial subscription. To receive the above edition in your inbox, subscribe before 10am Friday 14/12/18.

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Garden Events 2019

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Featured News       


 

Join the Wild Macadamia Hunt

October, 2018

Australia's most commercially successful "bushfood" so far is the macadamia. They're grown on a mass scale around the world, but those plants are the result of a century and a half of breeding and selection. Meanwhile, the progenitors of these plants and their relatives are rare and threatened in the wild.

One of the initiatives to save the survivors and the genetic diversity they contain is The Wild Macadamia Hunt. It's one you can get involved in, too.

Macadamia species are native to rainforests of SE Qld or Northern NSW and many private properties could contain remnant wild trees or their direct descendants. Extensive planting of macadamias also means that many trees are found outside of rainforest.

If you live in the macadamia's natural range and know of an old specimen (~100 years or more), you can register the tree and send in some photos. If the submission warrants further investigation, you'll be sent a special kit which will enable you to collect a leaf sample (with permission!) for genetic analysis.

Instructions and more information, including identification guides to target species, can be accessed via the website: The Wild Macadamia Hunt

You can also join the Wild Macadamia Hunters Facebook group to share the story of your tree and learn more about macadamias.

Thanks to Healthy Land & Water for contributing to this story. The Wild Macadamia Hunt is an initiative of Healthy Land & Water with support from the Brisbane City Council and the Macadamia Conservation Trust.

The Garden Scene

More news about plants and gardens in Queensland, plus other useful and interesting horticultural news from around the world.

Dollar value of botanic gardens

Deloitte Access Economics has recently studied the Royal Botanic Gardens & Domain Trust in NSW to quantify the value its gardens return to the people of that state. The Trust oversees three gardens and a parkland in the Sydney region. These contributed about $140 million to the NSW economy in the 2016-2017 financial year. The majority of this was attributed to interstate and international tourism. The value delivered to NSW residents in terms of social/cultural benefits was estimated at $186 million per year. The three gardens directly employ the equivalent of 231 full-time employees, but the number of jobs created when suppliers and tourism were included was estimated at 1,116. That is, for every person employed full time, more than three full time jobs (or the equivalent) are indirectly created in other sectors. The full report can be downloaded from rbgsyd.nsw.gov.au/stories/2018/more-than-just-parks-and-gardens (October, 2018)

Growing brains

Recently released results of a psychological study suggest greener neighborhoods may improve children's brains. 11-year-olds living in urban areas of England were assessed. Even after allowing for socio-economic factors associated with neighbourhoods, more greenspace was correlated with better spatial working memory. This cognitive function records and processes information about an individual's surroundings and is related to attention control. It's also correlated with academic achievement. While this study couldn't prove that the environment directly caused the better memory performance, it points the way to further research and another possible benefit of more parks and gardens in cities. Source: Greener neighborhoods may be good for children's brains. Full report: The role of neighbourhood greenspace in children's spatial working memory (September, 2018)

Should Brisbane zip it?

Brisbane City Council has released more details of the zipline tourist attraction proposed for the Mt Coot-tha forest, which includes two ziplines and a treetop bridge walk. A short animated video showing how they will look can be viewed here. Council assures residents that environmental and cultural values of the precinct will be respected, but community opposition is developing. Besides the forest, the lookout and the botanic gardens will be affected. More information: Detailed designs for Mt Coot-tha Zipline unveiled and Mt Coot-tha zipline. (September, 2018)

Bee-eaters to bee savers

Even though it eats bees, Australian native bird species the rainbow bee-eater, could help bees in an unlikely way. The indigestable bee wings are regurgitated in a pellet. By analysing these pellets, Biosecurity Queensland hopes to detect incursions of Asian honey bee which could be carrying the dreaded varroa mite. Bee keepers and residents of the Townsville area are being asked to look out for rainbow bee-eater roosts and report them so that pellets can be collected. More information: Bird barf busts bad bees (August, 2018)

Prehistoric perfumes

Flowers trapped in amber have shown that fragrance evolved as early as 100 million years ago - before showy petals - as a way of attracting pollinators to primitive flowers. Even though the scent compound themselves can't be analysed, but the tissues responsible can be identified. The fact that species alive today have retained similar structures suggests the fragrance chemicals produced were also similar. Source: Those fragrances you enjoy? Dinosaurs liked them first (August, 2018)

Mindscaping

Status of a study's participants living near vacant lots in Philadelphia, USA were recorded before and after the lots received different levels of rehabilitation. Those within a quarter-mile radius of greened spaces averaged a 41.5% reduction in feelings of depression compared to those near lots that remained abandoned. A basic clean-up of trash without addition of grass and trees had no effect. Full report: Effect of Greening Vacant Land on Mental Health of Community-Dwelling Adults JAMA Network Open (July, 2018)

TV sports coverage captures environmental data

Researchers have been able to analyse plants growing around recognisable landmarks in video footage of Belgian cycle race the Tour of Flanders recorded between 1981 and 2016, scoring leaves and flowers present on specific days. This showed that prior to 1990, few trees had produced their spring foliage in time for the Tour. After that, more and more trees in leaf were visible, correlating with with average temperatures for the area rising about 1.5°C over the period. This method of observing climate and other environmental changes could utilise footage of events like marathons, golf tournaments or open-air festivals in addition to other cycle races around the world. Source: TV coverage of cycling races can help document the effects of climate change, British Ecological Society (July, 2018)

Queensland Landscape Architecture Awards

The Australian Institute of Landscape Architects has announced the winners of its 2018 Queensland awards. Awards of Excellence in various categories included Palmwoods New Town Square, Wembley Link Pathway Public Art (Logan City), Rockhampton Riverside, Centenary Lakes Nature Play, Home of the Arts (HOTA) Outdoor Stage (Gold Coast) and the Brisbane Airport Landscape Setting Strategy. Full list of awards, recipients and further details: 2018 AILA QLD Landscape Architecture Awards. (June 2018)

Bundaberg welcomes new nut

The Bulburin Nut (Macadamia jansenii) is a rare species of macadamia found only on one small area of Bulburin National Park near Gin Gin. As part of the Keeping Bulberin Nut Secure project, 40 trees are to be planted in Bundaberg Botanic Gardens. This species cannot be reproduced by seed and must be vegetatively propagated. The gardens already grows several of the original Macadamia species. Source: Source: Botanic Gardens goes nuts for macadamia conservation (June 2018)

Changing of the guard for Ipswich jacs

Four jacarandas trees on Brisbane Terrace Goodna are to be removed and another five monitored as their poor health poses a safety risk. A storm earlier in the year felled another of the trees, which prompted inspection of all 28 trees. They were was planted in 1932 (when Brisbane Terrace was the main road between Ipswich and Brisbane) and have been subjected to droughts and floods in the time since then. The four individuals removed will be replaced by new jacatandas of advanced size. Source: Jacaranda trees reach end of life(May 2018)

Nanango students sunflower stars

Meanwhile, Nanango State High School are the champions for the second year in a row in the University of Queensland Sunflower Competition, beating 102 other high schools across Australia. Using a specified seed variety and pot size, students are allowed to experiment with cultural factors such as growing mix, fertiliser and watering to achieve the heaviest plant possible in a 12-week period. Other awards were made in several categories including the tallest and most ornamental sunflowers. View the full results here.

Queensland pumpkin royalty deposed

Steven Fritz of Marburg has taken out the Royal Queensland Show (Ekka) Giant Pumpkin Competition with a 206kg fruit. Competition veterans Tony and Geoff Frohloff came in second and third. A 40kg entry from Bullyard State School (near Bundaberg) won the school competition.

Tallebudgera tides via boardwalk

A new boardwalk within the Gold Coast's Schuster Park Natural Area, extending the peninsula nature trail by 120 metres. Constructed from composite fibre materials to withstand salt water, the boardwalk will enhance opportunities for nature observation with minimal disturbance to the sensitive tidal environment. The city's new Urban Habitat Creation Program was also demonstrated at the opening. Artificial hollows are created in suitable trees (dead or alive) and managed for wildlife habitat. Source: Boardwalk takes visitors into Tallebudgera's hidden gems (March 2018)

Toowoomba, Singapore exchanging excellence

Following a visit to the Toowoomba Carnival of Flowers by a party from Singapore's renowned Gardens by the Bay, an agreement has been signed for a staff exchange and training program involving Toowoomba Regional Council and TAFE Queensland South West. In addition to the opportunity to share knowledge and expertise, the Council see potential to promote the region in Singapore. Source: Gardens by the Bay, Singapore MOU highlights bold ambitions (March 2018)

Wallabies rock in Ipswich

The brush-tailed rock wallaby is the City of Ipswich's faunal emblem but has been listed vulnerable to extiction. To aid the species' survival, a plan has been developed by Ipswich City Council including reducing pest plants and predators while improving connectivity between habitats. Some 2200ha of prime habitat at Flinders-Goolman Conservation Estate has already been purchased. Source: Recovery Plan for iconic brush-tailed rock wallaby (March, 2018)

Avoid Urban Tree Thirst

Researchers in North Carolina USA looked at Quercus phellos to both in the landscape and in laboratory conditions study how urban trees could be affected by water stress. Higher temperatures could increase tree growth - provided the trees had adequate water. Also, scale insects had little effect. On the other hand, if trees were water stressed, growth rate was lowered, even more so if combined with heat and/or scale insects. Source: Lack of Water is Key Stressor for Urban Trees (March, 2018)

Piccabeen Palms Help Transform Palmwoods

Palmwoods in the Sunshine Coast hinterland officially opened its new Piccabeen Green town square. In addition to a boardwalk, seating, shade structures, artwork and historical information, the project includes 54 Piccabeen palms (Archontophoenix cunninghamiana) which have inspired its name. Source: New $3M town square transforms heart of Palmwoods. You can get a drone's-eye view of the completed landscaping with this short video. (March 2018)

Geothermally cool koala research

Brisbane City Council has funded and started construction on a new research facility at Lone Pine Koala Sanctuary. In addition to laboratories investigatong koala disease and genetics, there'll be public viewing areas and interactive learning displays. The centre will be self-powered by solar panels and a geothermal cooling system. Source: Construction underway for Koala Research Centre (February, 2018)

Redlands koala tree vandalised

A high-value koala food and refuge tree in Wellington Point has been vandalised by cutting, drilling and the application of a chemical. One of the suburb's iconic poincianas has also been repeatedly hacked at, possibly in an attempt to speed decay of the tree. Source: Koala food tree and others icons at risk from vandalism (February, 2018)

Birds are coffee lovers, too

While coffee lovers may have a preference between arabica or robusta, what are the implications for birds in parts of the world wehere coffee is grown? A study in India compared bird populations where coffee is grown in shade (usually arabica) with full-sun robusta. While the former supported an greater number of different species, the robusta plantations supported higher densities of certain sensitive species. This is good news as robusta becomes predominant worldwide. Robusta also requires less pesticides. Source:Birds and beans: Study shows best coffee for bird diversity (February 2018)

Yucca Warning

A Melbourne ear, nose and throat surgeon has reported an increase in ear injuries caused by yucca leaves entering the ear canal. In some cases, this resulted in permanent hearing loss. The ABC interview does not specify which type(s) of yucca are the cause. Neither does the first page of the published medical report (free to view without subscription here), but the plant illustrated appears to be Yucca elephantipes. This is certainly the most likely culprit, given how common this species has become in Australian gardens. It can grow many metres tall, so there's a chance it could reach ears at all heights. (January, 2018)

Ipswich preserves an original resident

Ipswich City Council has preserved a huge Eucalyptus tereticornis (Queensland Blue Gum or Forest Red Gum) by during an upgrade to Riverside Drive at Pine Mountain. A low pressure sucker vac was used to locate the root plate of the 35 metre high tree, allowing a concrete floodway to be modified to avoid damage. Council has undertaken to maintain the specimen, an original tree of the area which managed to escape the timber industry. Source: Health of 'pioneer' Blue Gum a priority during roadworks (December 2017)

Another award for Toowoomba carnival

The Toowoomba Carnival of Flowers in conjunction with The Chronicle Home Garden competition has won the inaugural Rural Green Space Award at the 2017 Australian Institute of Horticulture national awards, honouring the role these events play in promoting the benefits of green spaces. The carnival is also a current Tourism Australia Major Festival and Event gold winner. Source: TRC wins inaugural national horticulture, Qld Tennis awards (November 2017)

Tourists to zip through Brisbane trees

A new zipline tourist attraction is being planned for Brisbane's Mt Coot-tha, including what will be the longest treetop canopy zipline in Australia. The Southern Hemisphere's longest pedestrian suspended bridge walk will also be constructed through the treetops above JC Slaughter Falls. Source: Zipline proposal ready to fly through Coot-tha tree-tops (November, 2017)

Logan gets more walkable

A shared pedestrian and cycle pathway in Logan Central, connecting Railway Parade and Logan Gardens, is officially open. It features landscaping, seating, shade structures and arbours at both ends. New pathway officially opens (November 2017)

Toowoomba's beautiful rubbish

Toowoomba are extending their beautification commitment to their waste facilities with an annual garden competition involving staff and Ability Enterprise (providing employment to the disabled and long-term unemplyed). Ravensbourne Waste Facility has taken out first prize in the 2017 competition. Source: Ravensbourne Waste Facility takes out garden gong (October 2017)

Community gardens get thumbs up in Moreton Bay

Following a successful trial at The Hills District Community Garden in Bunya, Moreton Bay Regional Council has officially undertaken to allow more community gardens in the region. A guide and expression of interest form is available on the council’s website. Source: Community gardens to blossom in Moreton Bay (October 2017)

IndigiScapes set to grow

A five -year upgrade of the Redlands IndigiScapes Centre has commenced. The first stage is an expanded nursery to supply Redland City Council with stock of local native species for its planting program as well as the public. Stage two will include expansion of the cafe and other amenities. Sources: First sod turned on IndigiScapes expansion (August, 2017), Redland City Council secures funding for lndigiScapes expansion (October, 2017)

Excellent vibrancy on the Scenic Rim

The Boonah, Beaudesert and Tamborine Mountain town centre master plans for have won an Australian Institute of Landscape Architects Award of Excellence in the Landscape Planning category. The project forms part of Scenic Rim Regional Council's Vibrant and Active Towns and Villages initiative. Boonah town square and the Village Greens at Tamborine Mountain are the next stages in the plan slated for commencement. Source: Town centre master plans judged Australia's best. (October 2017)

Ants not anti-plants

Ants on plants are often bad news as they "farm" sap-sucking insects, but can benefit in various ways, including as a fertiliser source. Researchers installed weaver ants in isolated coffee plants and fed ants with a form of traceable nitrogen (15 N). When ants were allowed to travel from one tree via bridges, it was found that visited trees became larger and had more nitrogen. What's more, leaves that where wrapped to protect them from ants nevertheless contained 15N, showing that waste from the ants was taken up and moved throughout the plants. In certain ecosystems, ants may thus contribute to plant nutrition by catching and digesting insects and foliar-feeding the trees in which they live. Source: Profitable cooperation: Ants protect and fertilize plants New research shows that ant fecal droplets serve as a valuable fertilizer for plants, absorbed directly by the leaves (August 2017)

Pollinators deterred by street lights

There has been a lot of concern about the decline of bees worldwide, but many pollinating insects operate at night. Experiments in a Swiss meadows showed that illumination simulating street lighting reduced pollination visits by 62%. One of the plant species (Cirsium oleraceum), which is visited by insects both day and night, exhibited 13% lower fruit set. this shows that showing that daytime pollination can't compensate even if the species is capable. These findings could have environmental and agricultural implications as residential areas expand worldwide. Source: Light pollution as a new threat to pollination (August, 2017)

Fracking weeds

Shale gas development in Pennsylvania forests (Marcellus Shale) has been linked to invasion of non-native plants. It appears that the invaders were introduced in gravel used to build roads and well pads as well as mud on trucks and tyres. Source: Shale gas development spurring spread of invasive plants in Pa. forests (July, 2017)

Parklands on the horizon for Chinchilla

An important step towards making Chinchilla Botanic Parklands a reality has been made with $2.85 million in funding secured from the State Government. A draft masterplan has also been developed with "liveability, tourism and economic development" objectives. Source: $2.85 million funding boost to bring Chinchilla Botanic Parklands to life (July 2017)

A natural Gold Coast city

The City of Gold Coast has endorsed a strategy aimed at achieving 51 per cent native vegetation cover by 2020, developed in response to strong community support. "Our Natural City" will encourage partnerships between government, business, institutions and residents to develop infrastructure, monitoring and participatory programs. More information at Our Natural City Strategy. Source: Connecting, protecting and partnering to preserve our natural city (June 2017)


Some older news items of continuing interest have been moved to appropriate subject pages. Check the Guide to Pages or use the search function at the top of the page.


Get Results Gardening is a weekly newsletter-style email publication especially for the new, inexperienced or reluctant gardener in SE QLD.

Simple and achievable ideas, reliable plants, shortcuts, inspiration and motivation for a beautiful garden that compliments your house and makes your whole property more enjoyable to live in.



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Get Results Gardening is a weekly newsletter-style email publication especially for the new, inexperienced or reluctant gardener in SE QLD.

Simple and achievable ideas, reliable plants, shortcuts, inspiration and motivation for a beautiful garden that compliments your house and makes your whole property more enjoyable to live in.


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