Sawdust as Growing Medium

Sawdust can be excellent or bad, depending on what you use and how you use it.

Do not use wood chips or shavings - those are not sawdust, but sometimes people are led to believe they work the same.

Plain sawdust and sand will work. Of course you need to supply the plant nutrients, because sawdust and sand have virtually none.

Before you fill the Grow-Box with soil mix, apply Pre-Plant mix evenly on the soil beneath the Grow-Box - 2# for a 30'-long Grow-Box that's 18" wide and 8" high. If your container is a different length, use 1 ounce per running foot.

Mix Pre-Plant at the rate of 1 ounce per running foot and Weekly Feed at the rate of 1/2 ounce per running foot into the soil medium. For a 30'- long Grow-Box you will thus be adding 2# of Pre-Plant and 1# of Weekly Feed into the soil mix, in addition to the Pre-Plant you placed on the ground.

After plants are up apply 1/2 ounce per running foot to the soil 4" from the plant stems, and water it into the soil around the plant roots. Do this weekly until 3 weeks before harvest on single crop varieties, and until 8 weeks before frost for ever-bearing crops.