| Charlotte's Web | Unknown | Selected from: R4 · (probably) | 60/40 | View variety |
| Charlottes Cookies | Purple Caper Seeds | | 60/40 | View variety |
| Charlottes Cream | Twisty Seeds | | 60/40 | View variety |
| Charlottes Glue | Slanted Farms Seed Company | | 50/50 | View variety |
| Charlotte’s Cherries | Kaya Creations | | 50/50 | View variety |
| Charlotte’s Cherries | Oregon Green Seed | | 50/50 | View variety |
| Charlotte’s Gift | Relic Seeds | | 50/50 | View variety |
| Charm Cookies | Mamiko Seeds | | 60/40 | View variety |
| Charm Dog | AlpinStash | | 60/40 | View variety |
| Charmz | Raw Genetics | | 60/40 | View variety |
| Charolette's Web [Amazon Organics] | Unknown | | Unavailable | View variety |
| Chasca | Lucky Dog Seed Co | | 50/50 | View variety |
| Chasing The Rainbow | MSS Genetics | | 70/30 | View variety |
| Chauffeur | Unknown | | 70/30 | View variety |
| Chaze | Flash Seeds | | 40/60 | View variety |
| Che | Vancouver Island Seed Company | | 20/80 | View variety |
| Cheap Trick | Exotic Genetix | | 60/40 | View variety |
| Cheddar | SappFire Seeds | | 40/60 | View variety |
| Cheddar Blossom | Karma Genetics | | 50/50 | View variety |
| Cheddar Koi | Matchmaker Genetics | | 40/60 | View variety |