- 10-32 weeks, or about 3-8 months, to grow a weed plant from seed to harvest. It’ll be quicker if you start with a clone or an auto flower seed.
- Germination: (3-10 Days) – Marijuana light cycle: 18 hours a day indoors; full, direct sun 6 hours a day outdoors, Cannabis seed should feel hard and dry, and be light to dark in color. An undeveloped seed is squishy and green or white in color, if you see this it probably won’t grow
Seedling (2-3 Weeks) – Marijuana light cycle: 18 hours a day indoors; full, direct sun 6 hours a day outdoors. When it’s in this tage you will notice the traditional cannabis fan leaves. Cannabis plants are considered seedlings until they begin to develop leaves with the full number of blades on new fan leaves.
Vegatative (3-16 Weeks) -Marijuana light cycle: 18 hours a day indoors; full, direct sun 6 hours a day outdoors. The vegetative stage of cannabis is where the plant’s growth truly takes off, and it typically lasts 3-16 weeks. At this point, you’ve transplanted your plant into a larger pot and the roots and foliage are developing rapidly. This is also the time to begin topping or training your plants.
- Flowering (8-11 Weeks) – Marijuana light cycle: 12 hours a day indoors; full, direct sun 6 hours a day outdoors. The flowering stage is the final stage of growth for a cannabis plant. This is when plants start to develop resinous buds and your hard work will be realized. Most strains flower in 8-9 weeks, but some can take even longer, especially some sativas.
Flower initiation (week 1-3): The plant will continue to grow and females will develop pre-flowers—pistils, or white hairs, will grow out, which are the beginnings of buds.
Mid-flowering (week 4-5): The plant itself will stop growing and buds will start fattening up.
Late flowering/ripening (week 6 and on): Trichome density will increase and plants will get very sticky; keep an eye on the color of the pistils to tell when to harvest.
Written By: Madison Brown