Most home growers harvest about 1 to 2 ounces (28 to 56 grams) of dried flower per plant indoors, while outdoor plants in full sun average 3 to 10 ounces (85 to 280 grams). Experienced growers who veg longer and train their plants often reach 4 to 8 ounces indoors and 1 to 2 pounds per plant outdoors. Commercial operations measure differently, at roughly 30 to 50 grams of dried flower per square foot per cycle.
Best Cannabis Yield Per Plant: 5 High-Yield Strains Compared
What is the average cannabis yield per plant?
Yield per plant is a range, not a fixed number, because it depends on light, veg time, container size, and genetics. A single plant in a small pot under a budget light may finish under an ounce. The same genetics in a large fabric pot with strong light and a long vegetative phase can produce eight times as much.
Average dried flower yield by grow setup
- Indoor, first grow: 0.5 to 1 ounce (14 to 28 g) per plant
- Indoor, dialed in: 3 to 6 ounces (85 to 170 g) per plant
- Greenhouse: 2 to 8 ounces (56 to 225 g) per plant
- Outdoor garden: 3 to 10 ounces (85 to 280 g) per plant
- Outdoor, optimized: 1 to 2 pounds (450 to 900 g) per plant
- Commercial canopy: 30 to 50 g of dried flower per square foot
Why do yield numbers vary so much?
Light is the biggest lever. Cannabis converts light energy into flower mass, so a weak lamp caps yield no matter how healthy the plant looks. Veg time comes second: a plant flipped at three weeks has far fewer bud sites than one flipped at eight weeks.
cannabis yield per plant guide
- Light intensity and hours: more usable photons, more flower
- Vegetative length: each extra week adds branching and sites
- Container size: root volume limits final plant size
- Genetics: some cultivars are heavy yielders, others stay compact
- Training: topping, low-stress training, and defoliation spread the canopy
- Environment: temperature, humidity, and airflow during flower
- Dry vs wet weight: fresh harvest weighs about three to four times more than cured flower
How many grams per watt should you expect?
Grams per watt is the standard indoor efficiency metric. New growers usually land near 0.5 g per watt of light, skilled growers reach about 1 g per watt, and well-tuned rooms with modern LEDs can exceed 1.5 g per watt. A 300 watt light at 1 g per watt means roughly 300 g total, split across however many plants fill the space.
Does pot size limit yield per plant?
Yes. A common rule is one gallon of media for every month of plant life, so a four month cycle suits a 4 gallon pot. Plants that become root bound stall in stretch and finish with smaller colas, while oversized pots waste water and nutrients.
How much CBD hemp flower does a plant yield?
Hemp grown for CBD flower follows similar biology but is usually cultivated for biomass. Field-grown hemp often produces roughly 1,000 to 2,500 pounds of dried flower per acre under good conditions, which works out to a few pounds per plant at wide spacing. Higher plant density raises total acre yield while lowering the weight of any single plant.
Is hemp yield per plant the same as high-CBD cannabis?
Not exactly. Hemp cultivars are selected for cannabinoid content, fiber, or seed, and many are harvested mechanically, so per-plant flower weight is less of a focus than total biomass and CBD concentration. Growers chasing smokable CBD flower still manage plants for bud size and density, similar to conventional cannabis.
How do you estimate harvest weight before drying?
Weigh a few representative branches at harvest and dry them fully, then use the ratio to project the whole crop. Fresh cannabis loses roughly 70 to 75 percent of its weight during drying and curing. A plant that weighs 400 g wet will typically finish near 100 to 120 g of dried flower.
Frequently asked questions
How much does one plant yield in a 4x4 tent?
Four plants in a 4x4 tent under a 400 to 500 watt LED commonly total 8 to 16 ounces dried. Per plant that is 2 to 4 ounces, and the number rises with longer veg times and better canopy management.
Is yield per plant or per square foot more useful?
Per square foot is more useful for planning, because it accounts for how much canopy you actually fill. Per-plant figures help when plant counts are legally capped.
Do autoflowers yield less than photoperiod plants?
Often yes, since autoflowers flower on a fixed schedule and cannot be vegged longer. A typical autoflower yields 1 to 3 ounces, with the best examples reaching 4 to 6 ounces.
How long until harvest affects final weight?
Harvesting early cuts weight and potency, because flowers bulk most in the final two weeks. Check trichomes and let buds finish swelling before you chop.