| ACME SYSTEMS, INC. | Glendale | WI |
| ADAMS NURSERY & LANDSCAPING COMPANY | Menomonee Falls | WI |
| AGRECOL CORPORATION | Madison | WI |
| AGRIUM ADVANCED TECHNOLOGIES | DeForest | WI |
| ALME LANDSCAPE | Stoughton | WI |
| AMERICAN LANDSCAPE | Menomonee Falls | WI |
| AMERICA'S BEST FLOWERS | Cottage Grove | WI |
| ANTON'S GREENHOUSES & GARDEN CENTER | Pleasant Prairie | WI |
| ARBOR VISTA NURSERY, INC. | Delavan | WI |
| ARBORICO NURSERY & SERVICES | Walworth | WI |