So it seems that <a href="http://en.wikipedia.org/wiki/Railroad_tie#Wooden">railway sleepers</a> are often treated with toxic chemicals to prevent rotting, termites, etc; and there&#39;s also all the oils and stuff from the trains in the case of used sleepers.<br>
<br>What are the options for building the raised beds?<br><br>Are some used sleepers known to be untreated? <br><br>What about other reclaimed wooden planks, like <a href="http://stonehead.wordpress.com/2008/04/02/maintaining-the-raised-beds/">shown here</a>? There seem to be a <a href="http://www.ecodirectory.com.au/index.php/vic/">few places nearby</a> that would sell such materials.<br>
<br> m.<br>