Citrus Root Stocks by Peter Young

Know Your Rootstocks

We all recognise the importance of rootstocks on citrus, but if you are unsure about which rootstock goes with what citrus cultivar, Queensland fruit tree expert and HMAQ member Peter Young suggests the following:

Trifoliata – confers some dwarfing. Ideal for Meyer lemon and finger limes, but is salt sensitive.

Swingle – produces a very large tree. Best used on grapefruit and pummelo.

Troyer – produces a mid-sized tree. Adaptable to a variety of cultivars, but avoid lemons and finger limes.

Benton – best used with Eureka lemon.

Cleo – best used with Calamondin.

Flying Dragon – confers dwarfing characteristics. Ideal for orange, mandarin and lime.


HMAQ members get a sneak peak at Carnival gardens

hmaq-toowoomba-group3Toowoomba members Brian Sams and Vivien McNamara employed their tour guiding expertise to arrange an exclusive advance tour of private gardens, public parks and local plant nurseries for HMAQ members in the week leading up to the 67th annual Toowoomba Carnival of Flowers. Following a delicious morning tea of home-baked cake and hot savouries, Brian took on the role of coach driver, while Vivien endeavoured to usher wide-eyed, image snapping, plant buying members through the diverse itinerary.

Highlights included a visit to Gordon and Marie Reynolds garden at Highfields. This small, but perfectly designed and neatly manicured garden was planted predominantly to natives whose flowering had been timed to perfection to coincide with the Carnival event. A tangible example of how much natives benefit from regular pruning, it was filled with rare grevilleas, weeping acacias and many obscure natives that had many scratching their heads. Members had to watch out as local wildlife swooped past, curious to take a closer look at the gaggle of human intruders.

This was followed by visits to some of the floral gardens for which the Carnival event is famous and a demonstration of clivea hybridisation by enthusiastic collectors Ray and Kerry Robinson. Lunch was a relaxed affair in the grounds of Springs Nursery.hmaq-toowoomba3

Local councillors, Toowoomba City Council gardeners and a cameraman awaited the arrival of the group at Laurel Bank Park where 660,000 seedlings and 13,500 tulips provided an impressive display. Councillors Geoff McDonald and Jo Ramia presented members with commemorative pins depicting the Toowoomba violet.

There was just time for one final stop at Coroneo’s nursery before members boarded the bus surrounded by their respective greenery. Car boots and back seats were loaded before everyone headed back down the Toowoomba Range after the very social and informative day.

The Carnival of Flowers and associated Ergon Flower, Food and Wine Festival runs over a ten day period (Friday 16 – Sunday 25 September 2016) and attracts close to 200,000 visitors.


Queensland Members out in Force at Parks Alive

ParksAlive2016HMAQ members were out in force at the annual Parks Alive event held on 6th and 7th August at Roma Street Parkland. Showcasing Brisbane’s horticultural splendour, this year’s theme was ‘grow your own’. Despite competition from a host of other events including the Queensland Exhibition, a ticker tape parade for the champion Firebirds and the opening ceremony and first day of events at the Olympics, people turned out in greater numbers than previous years to enjoy lectures, guided walks, children’s activities, entertainment and magnificent floral displays planted by Parkland staff. ABC radio’s Rebecca Livingston hosted an outside broadcast with Annette McFarlane, Noel Burdette, Claire Bickle, Paul Plant and Paul Hoffman speaking on air about the event and in some cases also presenting a number of lectures and practical workshops.

Queensland Garden Expo draws record crowd


First-time gardeners and seasoned green thumbs formed part of the record crowds that descended on Nambour Showgrounds over the weekend as part of the 32nd annual Queensland Garden Expo.
Event Manager Marion Beazley said while gate numbers were not yet finalised estimates show that between 38,000 and 40,000 people had embraced the winter sunshine and attended the three-day Expo, cementing the 2016 event as the largest one held to-date.
“From the warm and sunny weather to the mix of expert speakers, all of the elements came together perfectly to deliver an increase in visitors of over 10 per cent on 2015,” Ms Beazley said.
“We couldn’t be happier with the outcome and all feedback indicates that this year’s Expo has certainly raised the bar.”
Ms Beazley said devoted gardening enthusiasts from as far as New Zealand had made the pilgrimage to the Sunshine Coast specifically to attend the Expo.
“Roughly six out of 10 attendees journeyed from outside the region, which has had a really positive impact on the local economy.”
“Taking factors like accommodation, food and other discretionary spending into account, we estimate this year’s Queensland Garden Expo has generated an economic benefit of more than $4 million for the Sunshine Coast.”
Ms Beazley said one of the many highlights from the 2016 event was the unveiling of the landscape garden competition entries, which saw several landscapers transform a simple patch of grass into a spectacular garden space.
“This year, the coveted gold medal was awarded to Dan’s Paradise Landscapes, the silver medal went to fellow Yandina-competitor, Waterscapes Australia while Sippy Downs-based landscaper SJ Landscapes took home bronze.”
“The talented landscaping teams never fail to impress and somehow always manage to create gardens that capture the imagination.”
The free lecture program was also a strong drawcard amongst attendees, with more than 130 lectures and demonstrations delivered by a range of gardening and horticulture experts on eight stages.
“This year’s program included everything from a kids’ composting workshop with Gardening Australia’s Costa Georgiadis — who attracted much attention in his gnome outfit — right through to a lesson on seasonal sowing from Anne Gibson and a tutorial on creating your own dressings, marinades and sauces from scratch,” Ms Beazley said.
“Other high-profile gardening personalities that took to the stage included Gardening Australia’s Sophie Thomson and Jerry Coleby-Williams, Gardening Talkback host Annette McFarlane, Phil ‘The Garden Guru’ Dudman, landscape architect Arno King and horticultural experts Claire Bickle and Noel Burdette.”
Ms Beazley said attendees were also wowed by the variety of new plant releases on display at the event, with some eager green thumbs rising early and queueing at the Expo gates to get the first sneak peek.
“The new plant varieties always attract a lot of attention over the three-day event and many of our exhibitors work year-round to come up with new and exciting concepts. This year, the Rainbow Eucalyptus proved particularly popular.”
The Queensland Garden Expo is an annual event held every July. To find out more, please visit

Fast facts
·       Close to 40,000 attendees
·       130-plus free lectures and demonstrations
·       360-plus exhibitors and displays including 55 nurseries
·       Eight speaker stages
·       55 nurseries
·       $4-plus million economic benefit
·       Thousands of free plants handed out as part of coffee cup recycling initiative


October 2016 Event

Brisbane International Garden Show

BIGS_2016Brisbane International Garden Show will be held over 4 days at Pine Rivers Park, Strathpine on 6-7-8-9 October 2016.

This event will showcase the unique Queensland gardening style and will bring together landscape gardening displays for both large and smaller gardens, gardening experts delivering talks and workshops and of course dozens of nurseries and gardening products displaying all the best of spring gardening plants and products.

Brisbane International Garden Show is organised by the same team that organises the very successful and long running Queensland Garden Expo at Nambour in July.

2016 promises to be a great year for gardeners with two fantastic, unique gardening events. We will keep you updated about both events throughout the year and hope that you can join us.


Myrtle Rust

What is Myrtle Rust?

Myrtle Rust (Uredo rangelii) is a newly described fungus that is closely related to the Eucalyptus/Guava rusts. These rusts are serious pathogens which affect plants belonging to the family Myrtaceae including Australian natives like bottle brush (Callistemon spp.), tea tree (Melaleuca spp.) and eucalypts (Eucalyptus spp.).

Myrtle Rust is distinctive in that it produces masses of powdery bright yellow or orange-yellow spores on infected plant parts. It infects leaves of susceptible plants producing spore-filled lesions on young actively growing leaves, shoots, flower buds and fruits. Leaves may become buckled or twisted and may die as a result of infection. Sometimes these infected spots are surrounded by a purple ring. Older lesions may contain dark brown spores. Infection on highly susceptible plants may result in plant death.

Article and image courtesy of DPI QLD

Comments are closed.