Thanks to the 2008 MG class, the first of the Arboretum's demonstration beds have been built! Ned Lynn from Hidalgo County led them through the process.
The perimeter of the vegetable beds were marked, then re-measure for accuracy. The corners were marked with flags. All vegetation was removed from the beds before the first timber was put into place.
The ends of the first layer of landscape timbers should be secured with rebar that has been driven through the timber angling toward the center of the timber. Drive the rebar into the ground a foot or two. Lay each layer so that the corners overlap. Secure the second layer of timbers to the first layer with galvanized nails. Continue to the desired height.
The final step is to drive a piece of rebar through all layers and well into the ground. You will want to pre-drill the holes. Now, you should have a secure raised bed.
Thanks to the 2008 MG class, the first of the Arboretum's demonstration beds have been built! Ned Lynn from Hidalgo County led them through the process. 
The perimeter of the vegetable beds were marked, then re-measure for accuracy. The corners were marked with flags. All vegetation was removed from the beds before the first timber was put into place. 
The ends of the first layer of landscape timbers should be secured with rebar that has been driven through the timber angling toward the center of the timber. Drive the rebar into the ground a foot or two. Lay each layer so that the corners overlap. Secure the second layer of timbers to the first layer with galvanized nails. Continue to the desired height.
The final step is to drive a piece of rebar through all layers and well into the ground. You will want to pre-drill the holes. Now, you should have a secure raised bed.
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