| Company or Location | Service or Function |
| JC Raulston Arboretum | Mature plant specimens |
| US National Arboretum | Pics, varietal data |
| NCICLB | Licensing of Irrigation Contractors |
| NCLCLB | Licensing of Landscape Contractors |
| NC Agronommy | Soil Sampling |
| NC Sod Producers Association | Assoc. for Sod Farms |
| NCSU Plant Fact Sheets | Plant data, Pics |
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