I’m narrowing down the best way to grow arugula – at least for my Tower Garden setup.  Of course, your mileage may vary.  🙂

Burpee arugula seeds seemed to produce a higher yield than Ferry Morse,  Slicing the bottom of the rockwool seemed to help as well. Letting 8 plants grow in one rockwool also produced a higher yield.

July 20, 2015

I sliced the bottom of the rockwool, poked 8 holes around the center hole and put 5 or 6 seeds in each hole.  Two rockwool cubes are the normal size.  Two are the quarter size doubled left over from this experiment.

July 20

July 20

July 25, 2015 – Placed in Tower Garden
Full rockwool cube Quarter size rockwool doubled
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August 1, 2015
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August 15, 2015
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August 29, 2015
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The arugula planted in the full rockwool cube is larger than the 1/4 size doubled.