City: St. Elmo, Ill.
Environmentally controlled square footage: 892,980
Number of offshore facilities: 0
Percentage of production space under permanent environmentally controlled structure devoted to each crop (based on 2010 rankings):
Ornamental bedding plants 53% (estimate)
Flowering potted plants 30% (estimate)
Plugs and propagation 15% (estimate)
Potted foliage 2% (estimate)