Free Marijuana Growing Tools
Three free tools that turn your space, seed type and dates into a realistic grow plan.
Plan your grow before you plant
Good harvests start with a plan. These tools answer the three questions growers ask most: how much will I harvest, which seeds fit my setup, and when will my plants be ready? Each one uses conservative, real-world ranges instead of best-case marketing numbers.
Our growing tools
How to use them together
Start with the strain finder to narrow down seed types. Next, run your space and light through the yield calculator so you know what to expect. Finally, use the harvest date calculator to put the grow on your calendar and check it against your first fall frost if you grow outdoors.
All results are estimates. Genetics, weather and your own habits move the final numbers, so keep notes and compare each harvest with the forecast. Our growing glossary explains any term you don’t recognize.
Ready to choose your seeds?
Browse every strain with one consistent spec sheet for THC, flowering time, height and yield.