Assembling grow boxes for fall crops

These 30 foot long and 18 inch wide boxes are being built for our fall crops.  We will also be building an in garden green house over these boxes.  This will allow us to extend our growing season by 12 weeks.

Once construction is complete they will be filled with a mix of sand and sawdust as our growing medium.   As that growing medium contains no nutrients for the plants we will be providing all of the necessary nutrients via an inexpensive mix that is applied on a weekly basis.

The PVC you see next to the treated 2×8 serve a few purposes.  They help hold the boxes level and in place once filled with our sawdust and sand  growing medium.  They also support the a-frames we will be making by heating and bending some half inch pvc.  Once the mini a-frames are in place they can then be covered with green house plastic to protect our fall crops.

Next to the grow boxes you can see our sweet potatoes growing like mad.
  

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