| CR+ | Blim Burn Seeds | | 40/60 | View variety |
| Crack Berry Zkittlez | Unknown | | 50/50 | View variety |
| Crack Dawg | Riot Seeds | | 40/60 | View variety |
| Crack Walker | Riot Seeds | | 50/50 | View variety |
| Craigs Skunk | Unknown | | 80/20 | View variety |
| Cranannas | Slanted Farms Seed Company | | 60/40 | View variety |
| Cranberry | Mr. C Seeds | | 60/40 | View variety |
| Cranberry Haze | Breeder Choice Organisation | | 40/60 | View variety |
| Cranberry Z-Bomb | Happy Dreams Genetics | | 60/40 | View variety |
| Cranberry Zkittlez | Mr. C Seeds | | 60/40 | View variety |
| Cranebow City | Crane City Cannabis | | 60/40 | View variety |
| Crap the Shitter | Riot Seeds | | 60/40 | View variety |
| Crash Helmet | Alien Genetics | | 100/0 | View variety |
| Crash Landing | South Bay Genetics | | 60/40 | View variety |
| Crash OG | MadCat's Backyard Stash | | 70/30 | View variety |
| Crash Test Dummy | The Bakery Genetics | | 60/40 | View variety |
| Crater Lake V4 | Dynasty Seeds | | 40/60 | View variety |
| Crater Lake V5 | Dynasty Seeds | | 50/50 | View variety |
| Crawnic Aliens | Lupos CannaSeed | | 70/30 | View variety |
| Crawnic Invasion | Lupos CannaSeed | | 60/40 | View variety |