permaculture

[Linda Shewan <linda.shewan@bryn.com.au>]

The kids are developing an edible maze and it will take a few weeks of 
Fridays just to get the walls/paths properly marked up - does anyone have 
ideas on what they can use to mark the lines that is not going to wash away 
but is completely non-toxic - both for the kids and for the food to be grown 
there?

In the past I have used lime and flour but these will obviously wash away, as 
will water-based paint of any kind...  any ideas?  We don't have enough rocks 
or mulch...

Thanks, Linda