I am running a bit of an "experiment" this year, as I am the only goof-ball growing corn in Silicon Valley (all the farms have been replaced by office complexes). In photo #1, I planted corn on April 6.
In photo #2, I planted the same sweet corn on the same April 6 date (right EarthTainer). Now compare the size and vigor of the two. I staged a second planting in the 'Tainer on the left April 29.
Hmmm....maybe I can convert those blue Walmart tubs into EarthTainers next season....
Ray