I teach
Permaculture in Las Vegas school system .. cool ... but one of the non-profits we are working with is using
Concrete to build their garden beds ... which they say is safe but from what I understand .. concrete gets hot in summer & cold in winter .. concrete isn't even a good building material ... it's just cheap .. economics
profit mentality wins again ... are there any resources I can send to them to get them to see this ? They say they looked into it ... 95% of our gardens are made with
wood .. I even got one school to build a flat bed which uses 30% less
water (Sunken
hugelkultur beds are on their way !!) .. but this school has gardens which could be leaching into the soil etc ... any help is greatly appreciated !!