Growing cannabis from seed to harvest takes about 3 to 5 months for most photoperiod plants. Starting from a freshly rooted clone shaves off the germination and early seedling weeks, so a clone-to-harvest run usually lands at 10 to 16 weeks. Autoflowers finish fastest, often in 8 to 11 weeks total.
The full timeline broken down
Every grow moves through the same phases, and each one takes a fairly predictable stretch of time. The big variables are how long you veg and which genetics you run. We run a Colorado nursery and start most of our own plants from clones, which is why our runs sit at the shorter end.
| Stage | From seed | From clone |
|---|---|---|
| Germination | 3 to 10 days | Skipped |
| Seedling / rooting | 2 to 3 weeks | Already rooted |
| Vegetative | 4 to 8 weeks | 2 to 8 weeks |
| Flowering | 7 to 12 weeks | 7 to 12 weeks |
| Drying and curing | 2 to 8 weeks | 2 to 8 weeks |
| Total to jarred bud | 16 to 24 weeks | 13 to 20 weeks |
Why clones save weeks
A seed has to crack, push out a taproot, and build its first true leaves before it does anything useful. That is 3 to 4 weeks of slow, fragile growth where a lot can go wrong. A clone is a cutting off a mature plant, so it already has the genetics and vigor of an adult. Once it roots, it takes off. Our clones vs seeds comparison breaks down the tradeoffs, but on pure speed, clones win by roughly a month.
Clones also skip sexing. Every clone we ship is female-guaranteed, so you never lose weeks vegging a plant that turns out to be male. From seed, you might not know sex until week 6 unless you buy feminized stock.
The stage you actually control: veg
Flowering length is mostly locked in by genetics. An indica-leaning strain might finish flower in 8 weeks, a hazy sativa might run 11 or 12. You cannot rush that much. What you do control is how long you keep a plant in veg. A quick 2-week veg gets you to harvest sooner but yields less. A longer 6 to 8-week veg builds a bigger plant and a bigger harvest. We dig into that tradeoff in our how long to veg guide.
Do not skip drying and curing
Growers count the days to harvest and forget the tail end. Drying takes 7 to 14 days done right, and a proper cure runs another 2 to 4 weeks minimum, sometimes longer. Skip it and you throw away much of the quality you spent months building. We walk through the whole process in our drying and curing guide. Budget for it in your timeline.
Ways to speed things up (and their cost)
- Start from a rooted clone instead of seed: saves 3 to 4 weeks.
- Run autoflowers: total cycle of 8 to 11 weeks, but usually lower yield.
- Veg for a shorter time: earlier harvest, smaller plants.
- Flip to 12/12 sooner: same idea, less veg growth.
- Pick fast-finishing indica genetics: 7 to 8-week flower instead of 11.
None of these are free. Faster almost always means less weight or less flexibility. Decide what matters more for your grow before you cut corners.
Every technique here works better with strong genetics. Browse our rooted, HLVd-tested clones or start with forgiving beginner strains.
Frequently asked questions
How long from clone to harvest specifically?
Plan on 10 to 16 weeks from a rooted clone. That breaks down to roughly 2 to 6 weeks of veg plus 7 to 12 weeks of flower, depending on the strain. Add another 3 to 6 weeks on the back end for a proper dry and cure before the bud is actually ready to smoke.
Are autoflowers really faster?
Yes. Autoflowers switch to flowering on their own after a few weeks regardless of light schedule, so the whole cycle runs 8 to 11 weeks from seed. The catch is they usually yield less per plant and cannot be cloned effectively. For sheer speed they win, but most serious growers stick with photoperiod clones for size and control.
Does indica or sativa finish faster?
Indica-dominant strains generally flower faster, often 7 to 9 weeks, while sativa-dominant strains can stretch to 10 to 12 weeks in flower. If harvest speed is your priority, browse our indica clones. Just know that the fastest finish is not always the biggest or most potent harvest.
Can I grow year-round indoors?
Yes. Indoors you control the light schedule, so you can start a new run any time and harvest every few months. Many growers stagger plants to keep a continuous supply. Outdoors you are tied to the season, with one harvest in fall for photoperiod plants unless you run a greenhouse with light control.
Want to shave a month off your next grow? Start with a rooted head start from our cannabis clones for sale, all female-guaranteed and HLVd-tested.