I’m trying to get as much arugula as I can out of one piece of rockwool in 35 days. (Ferry-Morse seeds say 35 days to harvest)  So for this planting, I took 5 pieces of rockwool and planted each in 5 different ways using this seed starting procedure.

May 16, 2015

4 holes poked around the center hole with 2 arugula seeds placed per hole - 6 in the middle.

4 holes poked around the center hole with 2 arugula seeds placed per hole – 6 in the middle

4 holes poked around the center hole.  I put 2 arugula seeds in each hole.

4 holes poked around the center hole. I put 2 arugula seeds in each hole.

8 holes poked around the center hole.  I placed 1 arugula seed in each hole.

8 holes poked around the center hole. I placed 1 arugula seed in each hole – 2 in the middle.

4 arugula seeds placed in the center hole.

4 arugula seeds placed in the center hole.

8 arugula seeds put in the center hole

8 arugula seeds put in the center hole

 May 23, 2015
20150523_180503 20150523_180442 20150523_180537 20150523_180429 20150523_180514
June 7, 2015
20150607_180048 20150607_180126 20150607_180144 20150607_180155 20150607_180209
June 17, 2015
20150617_191838 20150617_191910 20150617_191922 20150617_191951 20150617_192007
Harvested July 3, 2015 – I weighed each
1 and 1/8 oz 1 and 1/4 oz 1 and 3/8 oz 1 and 1/8 oz 1 and 3/8 oz
The winner here were the 2 that had 8 seeds planted. It didn’t matter if the seeds were spread out or put all in one hole.  (Instead of 35 days, I harvested after 48 days.)
Since the rockwool with 8 holes did well, I decided to run this arugula experiment to expand on the 8 holes idea.