| Impala 64 (Impala 64 Haze Auto lineage, Sumo Seeds) | Unknown | | Unavailable | View variety |
| Impala 64 Haze Auto | Sumo Seeds | | 50/50 | View variety |
| Imperial Dank | 707 Seed Bank | | 60/40 | View variety |
| Imperial Eagle | Dominion Seed Company | | 80/20 | View variety |
| Imperial Fuel | Katsu Seeds | | 50/50 | View variety |
| Imperial Star Destroyer | Andromeda Strains | | 70/30 | View variety |
| Imperium X | Anesia Seeds | | 60/40 | View variety |
| Import Afghani x Skunk #1 | TH Seeds | | 40/60 | View variety |
| Impressions | Gage Green Genetics | | 70/30 | View variety |
| In The Pines | Aficionado Seed Collection | | 20/80 | View variety |
| In Z Air | Perfect Tree | | 60/40 | View variety |
| Inca Gold | NorStar Genetics | | 40/60 | View variety |
| Inca Spirit | Hemcy Genetics | | 50/50 | View variety |
| Inca Trail | Heart & Soil Seeds | | 60/40 | View variety |
| Incense (Kaori lineage, Shuga Seeds) | Unknown | | Unavailable | View variety |
| Inception | Pacific NW Roots | | 30/70 | View variety |
| Incredible Bulk Auto | Dr. Krippling Seeds | | 60/40 | View variety |
| Incredible Green Crack | JustFeminized.com | | 60/40 | View variety |
| Incredible Hawaiian Hulk | Pua Mana Pakalolo | | 50/50 | View variety |
| Incredible Power | Sin City Seeds | | 50/50 | View variety |