Bell Nursery

City: Burtonsville, Md.

Website: BellNursery.com

Environmentally controlled square footage: 4,212,480 (estimate)

Number of offshore facilities: 0

Percentage of production space under permanent environmentally controlled structure devoted to each crop (based on 2010 figures):
Ornamental bedding plants 75%
Container perennials 10%
Flowering potted plants 5%
Herbs 5%
Vegetables 5%