Potting mix and Legionellosis
             

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Dr David Bromwich is a retired occupational hygienist with an adjunct appointment at Griffith University and gives lectures at other universities.
www.dbOHS.com

 
   

If you buy a bag of potting mix that complies with Australian Standard AS 3743-2003 Potting Mixes then you will find this label (as approximated below):

HEALTH WARNING
THIS PRODUCT CONTAINS MICRO-ORGANISMS AVOID BREATHING DUST OR MISTS— WEAR PARTICULATE MASK IF DUSTY WEAR GLOVES AND KEEP PRODUCT MOIST WHEN HANDLING WASH HANDS IMMEDIATELY AFTER USE READ DETAILED WARNING LABEL ON THIS BAG

The wording of this “detailed warning” is not mandated, but may contain something about the risk of Legionnaires disease (Legionellosis) and how to minimise the risk.

 

From a 2 page Feature Article in Issue Thirty Four
 
 
Source USPHS.
 
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Garden Calendar
             
Arno King
   
 

   

For the top half of Australia, this is generally the wet season characterised by a hot humid summer with heavy rainfall and storms. Gardeners in the tropics and subtropics can enjoy their renewed energy by preparing garden beds for their ornamental and edibles.

As the months progress from February to May, the day length also shortens. The nights will also be cooler enticing more people out to enjoy the pleasant evenings.

For some plants, the shortening day length stimulates flowering as seen in specimens such as Poinsettias (Euphorbia pulcherrima). For others the cooling nights may also stimulate flowering, but will also result in the slowing down of growth.

It is time to get active in the garden in the warm climates zones of Australia. Buy your plants, prepare your sites and get digging during these months – the best months of the year.

Information is given for what to do in each of the months:

  • February
  • March
  • April
  • May

Special information is also provided for:

  • Vegetable planting schedule for February, March, April and May for subtropics and tropics
  • Annual planting schedule for February through May.

 

From a 7 page Feature Article in Issue Thirty Four
 
 
Tropical plant collectors love to grow all sorts of gingers such as these Torch Gingers (Etlingera elatior).
 
Tropical Pear (Pyrus communis ‘Hood’) does well in subtropical climates.
 
Native trees like bottlebrushes (Callistemon and Melaleuca spp.) will attract birdlife into the garden.
 
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