| Granddads Blue Cheese | New420Guy Seeds | | 60/40 | View variety |
| Grande Crack | Bulk Seed Bank | | 40/60 | View variety |
| Grande Gotti | Aficionado French Connection | Gotti · F1 · [ ] × Gotti · F2 · [ ] | 50/50 | View variety |
| Grande Supremo | Gage Green Genetics | | 50/50 | View variety |
| Grandi Candi | Grandiflora Genetics | | 60/40 | View variety |
| Grandma's Batch Candy Cookies | Purple Caper Seeds | | 60/40 | View variety |
| Grandma's Double Stuffed Cookies | Johnston's Genetics | | 60/40 | View variety |
| Grandma's Hashplant | Bodhi Seeds | | 80/20 | View variety |
| Grandma's Sugar Cookies | Johnston's Genetics | | 70/30 | View variety |
| Grandmaster Runtz | Unknown | | 60/40 | View variety |
| Grandoggy Purps | Connoisseur Genetics | | 70/30 | View variety |
| Grandpa Larry | Grand Daddy Purp | | 80/20 | View variety |
| Grandpa's Breath F2 | Dungeons Vault Genetics | | 60/40 | View variety |
| Grandpa's Stash | Ethos Genetics | | 80/20 | View variety |
| Grandpas Cookies | Slanted Farms Seed Company | | 60/40 | View variety |
| Grandpa’s Cookies | Ethos Genetics | | 50/50 | View variety |
| Granflora | SwissSeeds | | 50/50 | View variety |
| Granflora | Helvetic Seeds | | 50/50 | View variety |
| Granita | Perfect Tree | | 60/40 | View variety |
| Granny Candy | Humboldt Seed Company | | 60/40 | View variety |