A New World Order - watch the video

3.2 million page views in 3 years, over 7500 members, and 1400 visitors per day are getting tree wise, see the numbers, see how your country stacks up in the PDF's

The Tree - The Movie - The Mission

Find and measure the tree which featured in the movie The Tree, to be released in September 2010. Mission successful. Read more.

Trees regulate leaf temperature to 21C

Tree photosynthesis, according to the study, most likely occurs when leaf temperatures are about 21C, with latitude or average growing-season temperature playing little, if any, role. This homeostasis of leaf temperature means that in colder climates leaf temperatures are elevated and in warmer climates tree leaves cool to reach optimal conditions for photosynthesis. Therefore, methods that assume leaf temperature is fixed to ambient air require new consideration.

"It is not surprising to think that a polar bear in northern Canada and a black bear in Florida have the same internal body temperature," Brent Helliker, professor of biology in the School of Arts and Sciences at Penn, said. "They are endothermic mammals like us ,and they generate their own heat. However, to think that a black spruce in Canada and a Caribbean pine in Puerto Rico have the same average leaf temperature is quite astonishing, particularly since trees are most definitely not endothermic. Our research suggests that they use a combination of purely physical phenomena -- like the cooling from water evaporation or the warming caused by packing a lot of leaves together -- to maintain what looks like leaf-temperature homeostasis." More

Treeworld and ACA bust rip off door knockers

Lack of licencing and regulation in the industry exposes people to not only shoddy work but also paying too much, see the rips offs for yourself. More here

Pruning Cuts on Amenity Trees

Knowing where the final cut is can be an art, however there is generally only 3 cuts because there is usually only 3 types of branch attachments.
  • A collared branch union
  • A collarless branch union
  • A codominant branch union

The pictures and data represented have been featured on Wikipedia since February 2008 and are of real scenarios.... more

Mt Warrenheip tree deaths results in

"Above-average temperatures, below-average rainfall and the hot northerly winds we have experienced in recent years _ these factors, together with reduced soil moisture, have all combined to reduce water availability to the trees and many have died," Ms Martin said. Read more.

Landmark tree felled due to council blunder

Are you getting the right advice? In the video below you'll see the blunders even in this day and age. Read more.

Wasp killing aphids video

Biological control close up. Read more.

Councils, trees, neighbours and disputes

Perhaps you too have a story to tell. Tell it here.

Jarrod McCracken fined $215,500 and Gordon Tallis fined $12,000 for clearing trees

Two well known rugby players both felt the long arm of the law for clearing protected trees, read more.

Wattle galls

You've all seen them but what exactly are they? Are they caused by insects or fungi? Read more

Australian Standards for trees on development sites AS4970

Known as AS4970 new standards are here to protect trees on development sites. Standards include canopy and root protection zones and methods of fencing to prevent damage. Details including a draft PDF here.

Comprehensive dieback chart and guide

Two well illustated PDF's available for download, provided by SA govt. Read more.

Poll - what is it?

Cast your vote, then see what others think this massive growth is. More here

Other Polls

How ants farm aphids

Chemicals on ants' feet tranquilise and subdue colonies of aphids, keeping them close-by as a ready source of food, says new research. The study throws new light on the complex relationship between ants and the colonies of aphids whose sugary secretions the ants eat...more

Beware of internet experts

The boom in websites focused on providing free information in the hope that you click on an ad and earn the owner some income is becoming the norm. Trouble is ...is the information you are receiving correct and accurate? In a detailed case study Treeworld take on Expert Village and their series of deadly videos, despite the producer not being a qualified arborist and a barrage of emails sent the site continues to display these dangerous practices. Video tutorials at the site are recieving solid approval votes from the public, who frankly don't know better... is your profession or trade also a victim of these Village Idiots? read more

Are arborist associations interfering with your right to earn an income?

In recently released documents of the merger between NAAA and ISAAC it becomes clear that the independence of operators may be under threat if you do not belong to an organisation. Whilst the AQF system is where Australian Arborists gain their qualifications is it fair that you have to pay exhuberent fees and "belong" to secure work? One senior member of NAAA wrote that they generate the leads and decide who gets the work, is it a transparent system and what a non for profit organisations role is? Are we going backwards similar to the old union closed shop days? Read more.

Brisbane court reduces land value $437,500 due to protected tree

A rate payer in a prestigous suburb argued that due to a large fig tree on their property they have diminished use of the land. The ruling by PA Smith of the Land and Environment Court on 10 February 2010 in fact delivered more than the appellant asked for. As the tree grows so does it's impact, read more.

Revenge of the rainforest

Amazon dumps 3 billion tons of CO2 into the atmosphere in 2005 when drought affected. Read more

Malpractice pruning

There are standards for tree pruning called AS4373 2007, the type of pruning seen above is known as topping, lopping or hat-racking and is generally done by either ignorant or incompetent operators as it breaches the standards. Often people ask for this type of pruning thinking it's the best thing however they may get more than they bargained for if an unscroupulous operator meets with them. A reputable and qualified arborist would soon inform you of the errors of your ways, in many council districts the practice could also land both you and the contractor a fine. In a recent case you can see what both the client and the contractor had to say ... and how the trees are recovering. More here

The lies about killing trees

Den News USA published an article called "The truth about 'killing trees'" where a statement was made "The amount of trees in this country has tripled since 1920". After quizzing the author the error became apparent ... more

Bayer Silvashield tree injectable insecticide Australian release

Active ingredient 200 g/L imidacloprid (similar to well know Confidor) has been specially formulated for tree injection. No mixing or dilution is required, treatments administered by arborists can last up to 3 years. More

Dangerous sloping back cuts

If your back cuts look anything similar to the one pictured above then you need to change your ways. There is not one place that will teach it, or approve of it, in fact it goes against all OHS codes for tree felling. In a detailed well thought out thread on Tree World the physics of why supported with diagrams will explain the dangers.