Indoors, it depends on how powerful your light is. A small 200W LED is great for a small grow tent, but you’ll need something bigger for a bigger space, which also means a more expensive light.
When growing indoors, you’re often limited by space—a plant can’t get as big in a grow tent as in a big, open basement. You’re also limited by how powerful your grow light is. For example, Leafly editor David Downs harvested 150g from one indoor plant with one 200W Black Dog LED light. The company said that light maxes out around a half-pound of buds, or 224g.
Some regions get rain early in the fall, so you’ll want to grow plants that are ready to harvest by the beginning of October. In tropical climates, you can practically grow weed outdoors all year round.
So if you weigh a freshly cut plant at three pounds, don’t get too excited—you’ll likely get ¾ lb. of finished buds (which is still a lot of weed).
Many factors affect how big a plant gets, but generally speaking, if you are growing a healthy plant, you can expect these yields from one weed plant:
If growing outdoors, you may only get one harvest a year. Remember, check out how many plants you can legally grow in your state here.
Additionally, if growing in containers, the size of the container, or the amount of soil the plant’s roots have, will affect the size of a plant. Growing in too small of a pot can stunt a plant’s growth.
How long will one plant’s worth of bud last you?
How much light a plant receives is highly variable. When growing outside, it all depends on where a plant is located to receive the most light throughout the entire season. Weed plants like full sun—at least six hours of direct sunlight every day. If a plant is in the shade or gets shaded as the light changes throughout the season, it can affect yields.
(To see how many plants your state allows you to grow at home, check out this table).
“Growing cannabis in tight spaces is not my usual recommendation,” said Stephen Lipton, the cultivation manager at The Farm Recreational Marijuana Dispensary, an award-winning recreational facility in Boulder, Colorado, specializing in what it calls “craft cannabis.” At any given time, Lipton oversees close to 15,000 plants across seven different facilities in Boulder County. “If you have a really tight space and it gets too hot or too humid, you’re going to have big trouble.”
Know the law.
Another layer to consider is that cannabis cultivation must happen “out of plain sight.” “You can’t have any odor. If it’s offending people in the neighborhood, then it’s an issue.”
Find a healthy clone.
Temperature: 68 to 78 degrees Fahrenheit. “A tool you should always have is a little temperature gauge,” Lipton said. “They call them hygrometers. They’re cheap and tell you both the temperature and the humidity.”
Cannabis’ growth is based on a light cycle. This is why it grows particularly well outdoors during certain months when the light conditions are ideal. When growing indoors, you must choose a light that best fits your budget, as well as the plant’s needs.
It is now possible to grow cannabis plants at home in specific states. For individuals fortunate enough to live in one of these places, they are free to experiment and grow a small crop.
The trichome method is a popular way to see if a cannabis plant is ready for harvesting.
After 3-8 weeks, depending on the strain and your preference, your plant will enter the flowering stage. You need to force it into blooming by ensuring it gets 12 hours of consecutive darkness each day. Sativas tend to take longer to bloom. Some can remain in flowering for up to 14 weeks! However, 8-9 weeks is more typical.
Germinating the Seed
One handy tactic is to place your plant near a sunlit window. That is if the climate you live in provides enough sunlight during the summer. You can then use a simple fluorescent bulb (CFL’s, T5’s, T8’s) to provide enough light during the night.