| Carrie White Bx | The Bakery Genetics | | 50/50 | View variety |
| Cart Wheels | Sin City Seeds | | 50/50 | View variety |
| Cartier OG | Aficionado French Connection | | 50/50 | View variety |
| Carwashed | Scapegoat Genetics | | 50/50 | View variety |
| Casaba Melon | Lost River Seeds | | 20/80 | View variety |
| Cascade | Irie Genetics | | 50/50 | View variety |
| Cascadian Frost | Swami Organic Seed | | 60/40 | View variety |
| Casey Cookies | Mamiko Seeds | | 60/40 | View variety |
| Casey Jones | The Devil's Harvest Seed Company | | 60/40 | View variety |
| Casey Jones | Head Seeds | | 60/40 | View variety |
| Casey Jones S1 | Sure Fire Seeds | | 60/40 | View variety |
| Casey Jones x The GG4 R.I.L | Tonygreens Tortured Beans | | 60/40 | View variety |
| Casey Killerz | Strayfox Gardenz | | 50/50 | View variety |
| Caseyband (Triple Purple Rhino lineage, Doc's Dank Seeds) | Unknown | | Unavailable | View variety |
| Cash Cow | Anesia Seeds | | 70/30 | View variety |
| Cash Crop | Cream of the Crop Seeds | | 100/0 | View variety |
| Cash Crop XL Auto | Cream of the Crop Seeds | | 70/30 | View variety |
| Cash Croppa | Riot Seeds | | 60/40 | View variety |
| Cash Cropper | Green Hornet | | 60/40 | View variety |
| Cash Express | Zamnesia | | 40/60 | View variety |