A small cannabis grow setup costs $300 to $1,200 for most home growers. A two-plant closet build with a budget LED and bagged soil lands near $300, while a 4x4 tent with a strong light, carbon filter, and meters hits $1,200. Power and supplies add $25 to $45 per month.
Cost to Grow One Cannabis Plant from Seed to Harvest
What gear does a small grow need?
Five things matter: light, moving air, a contained space, a growing medium, and water with nutrients. Miss one and plants stall or stretch. The list below fits a 2x4 or 3x3 tent with two to four plants.
how much money to start a micro grow
- Grow tent with reflective walls: $70 to $180
- LED grow light, 100W to 300W: $80 to $350
- Inline exhaust fan and carbon filter: $80 to $200
- Clip fan for air movement: $15 to $40
- Fabric pots and saucers: $15 to $40
- Soil or coco coir: $20 to $60
- Nutrient bottles: $30 to $100
- pH and TDS meters: $30 to $120
- Timer: $15 to $30
- Thermometer and hygrometer: $10 to $30
- Seeds or clones: $30 to $100
Those prices total $395 to $1,220 before the first harvest.
how much does a small cannabis grow tent cost
Which budget tier fits your space?
Starter build: $300 to $500
One or two plants in a closet or 2x2 tent. A 100W LED panel covers the light, and you water by hand from a jug. This tier works, though harvests stay small at 1 to 3 ounces per plant.
Mid-range build: $600 to $1,000
A 2x4 or 3x3 tent with a 200W to 240W LED and a carbon filter that kills odor. Yields reach 4 to 8 ounces per plant when light, air, and feeding stay on schedule.
Full-control build: $1,000 to $1,800
Controllers for temperature, humidity, and fan speed, plus better meters and a larger light. Automation cuts daily chores and holds conditions steady through flower. The gear costs more than the plants return on a first run.
What does a small grow cost to run each month?
Electricity is the main ongoing expense. A 150W LED on an 18-hour veg schedule pulls 2.7 kWh per day. At the US average near 17 cents per kWh, that is about $14 per month during veg and less during 12-hour flower.
- Fan and filter power: $3 to $6 per month
- Nutrients and pH supplies: $10 to $20 per month
- Carbon filter replacement: $40 to $80 every 6 to 12 months
- Water: a few dollars
Total running cost lands between $25 and $45 per month for one small tent. Cheap local power rates push that lower.
Which costs catch new growers off guard?
- pH pens drift out of calibration and need storage solution or replacement.
- Carbon filters lose their punch after two or three grows, and smell returns.
- Seeds cost money every run unless you keep mothers for clones.
- Power bills rise in summer when an AC has to fight heat from the light.
What does an ounce cost from a home grow?
A $900 setup that yields 6 ounces on the first run works out to $150 per ounce. Run the same gear three times and the one-time cost spreads across 18 ounces, which drops the gear share near $50 per ounce. Supplies and power set the floor after that.
Can you build a small grow setup for under $300?
Yes, if you trade gear for labor. A closet with flat white paint, a 100W LED, a desk fan, and hand watering covers the basics. Yields suffer because light spread and airflow stay uneven, and smell control is weak in an open room.
Do you need a tent at all?
No. A spare closet or basement corner works when you can block light leaks and manage odor. Tents cost money but they trap smell, bounce light back at the canopy, and give you a port for ducting. For renters and small apartments, the $70 to $180 is money well spent.
Seeds, clones, and plant count limits
Feminized seeds run $10 to $15 each, and five-packs cost $50 to $80. Clones sell for $10 to $25 at dispensaries in states that allow home growing. Check your state's plant count limit before you buy gear, since the cap decides how big your setup should be.
Where do growers overspend?
- Lights sized for a bigger tent than they own, which adds heat
- Ten-bottle nutrient lines when two or three products do the job
- Premium tents when a closet and reflective film cost under $30
- Controllers and sensors bought before the first harvest