Whether you're beginning cannabis growing or looking to improve your existing grow, following this complete guide will help you produce large, high-quality yields right at home. With the right supplies, strategies, and attention, cultivating weed indoors can be an extremely rewarding and cost-effective endeavor.
Choosing Cannabis Varieties
The first step in planning your indoor harvest is selecting the right weed strains to cultivate. The three main types of pot plants each have their own traits.
Sativas
Known for their invigorating cerebral effects, these strains spread tall and slender with narrow leaves. They thrive in tropical tropical climates and have a longer flowering time between 10-12 weeks indoors. Top energizing varieties include Jack Herer, Durban Poison, Super Lemon Haze, and Jack Herer.
Indicas
These strains provide calming full-body effects and grow short and bushy with wide leaves. Accustomed to cooler mountain climates, they flower faster within 2-2.25 months. Popular relaxing strains include Granddaddy Purple, Northern Lights, and Bubba Kush.
Mixed strains
Mixed varieties blend traits from both sativas and relaxing strains. They offer combined effects and have moderate blooming periods around 9-10 weeks. Popular hybrids are OG Kush, Girl Scout Cookies, and Blue Dream.
Setting Up Your Grow Space
Marijuana plants need the right controlled environment to flourish. Key factors for indoor cultivations are lighting, airflow, layout, and finding the ideal discreet location.
Location
Choose an available space with direct access to water and power outlets. An empty spare room, large closet, corner of the basement, or grow tent securely placed in a garage all make great stealthy cultivation room spots.
Lighting
Weed requires powerful light for all growth stages. LEDs are energy-efficient and come in broad spectrum options mimicking real sunlight. Cover 250-400 watts per square foot for the vegetative stage and 20-40 watts per sq. ft. for bloom.
Ventilation
Proper ventilation and exhaust systems keep ideal temperature, moisture, and pure CO2 levels. Install low-noise 4-6 inch fans or scrubbers to circulate stale air and reduce smells.
Layout
Maximize your space by positioning plants strategically under the lamps and allowing room to access and work around them. Set up distinct zones for vegetation, flowering, curing, and cloning.
Cultivation Mediums
Cannabis can be grown in different mediums, each with benefits and cons. Pick a appropriate option for your particular setup and cultivation style.
Soil
The traditional medium, soil is affordable and easy for beginners. It provides great taste but needs more irrigation and nutrients to feed plants. Amend soil with perlite or coco to improve drainage.
Coconut coir
Made from coir, renewable coconut fiber holds water but still lets in air to the roots. It's more sterile and more consistent than soil. Use coir-specific fertilizers to prevent accumulation.
Hydroponics
In hydro systems, plant roots grow directly in nutrient water solution. This allows rapid growth but needs careful observation of water chemistry. Deep water culture and drip systems are common techniques.
Germinating Seeds
Germination activates your marijuana seeds to start growing radicles. This readies them for transplanting into their cultivation medium.
Towel Method
Put seeds between wet paper towel and maintain them damp. Inspect after a week for growing radicles showing sprouting is complete.
Planting directly
Insert seeds right into wetted cultivation medium 6mm deep. Gently water and wait 7-14 days until seedlings break through the top.
Rockwool Cubes
Presoak rockwool cubes in balanced water. Insert seeds 1⁄4 inch deep into the cubes. Keep cubes moist until seedlings emerge within 1-14 days.
Repotting Young plants
Once germinated, marijuana young plants need to be transplanted to prevent crowding. Move them into proper sized pots.
Preparing Containers
Fill large containers with cultivation medium enriched with time-released fertilizer. Let pots to absorb water overnight before transplanting.
Gently repotting
Carefully loosen seedling roots from germination medium using a spoon. Put into pre-soaked pot at equal depth as before and lightly water in.
Growth Stage
The growth stage promotes leafy growth and plant structure through 3/4 to full day of continual lighting exposure. This stage usually lasts 4-8 weeks.
Using 3/4 to full day of Lighting
Use grow lights on a 24 hour cycle or outdoor light to initiate constant photosynthesis. Light output influences height and internodal spacing.
Fertilizing
Use grow stage fertilizers higher in nitrogen. Make sure pH stays around 5.8-6.3 for proper nutrient uptake. Fertilize 1⁄4 to 1⁄2 strength after 14 days and increase gradually.
LST and topping
Fimming, low stress training, and trellising direct growth shapes for flat canopies. This increases yields.
Bloom Stage
The flowering stage grows buds as plants show their sex under a 12 hour light timing. It lasts 8-12 weeks depending on variety.
Changing Light Schedule
Change lamps to 12 hours on, 12 hours off or place outdoors for outdoor 12/12 timing. This triggers plants to start blooming.
Flushing
Flushing flushes out nutrient salts to enhance taste. Feed weakly the first period then just use plain water the final 2 weeks.
Flushing
Maintain 12/12 light timing but leach using pH-balanced water only. Return to plain watering if buds aren't yet ripe after two weeks.
Harvesting
Recognizing when marijuana is fully grow light guide ripe delivers peak cannabinoid content and aroma. Cut down plants at peak ripeness.
Identifying Ripeness
Check swollen calyxes, faded pistils, and 5-15% cloudy trichs. Check buds around the plant as they don't all mature evenly.
Cutting Plants
Use sterilized, razor-sharp trimming scissors to carefully slice each plant at the base. Leave several inches of stalk attached.
Drying
Suspend intact plants or branches inverted in a dark room with moderate temperature and RH around 50-60% for 1-2 weeks.
Curing
Curing keeps drying while improving the buds like aged spirits. This process mellows harshness and intensifies terpene and terpene profiles.
Curing containers
Manicure dried buds from stems and store into glass jars, filling about 75% capacity. Use a sensor to measure jar moisture.
Burping Daily
Open containers for a short time daily to slowly reduce moisture. Remoisten buds if RH goes under 55%.
Final Cure
After 2-3 weeks when moisture levels off around 55-65%, perform a final manicure and keep long-term in sealed jars.
Troubleshooting
Even seasoned growers run into various marijuana plant problems. Detect issues soon and fix them correctly to maintain a healthy garden.
Poor feeding
Yellowing leaves often indicate inadequate nitrogen. Anthocyanins and leaves signal phosphorus deficiency. Check pH and increase fertilizers slowly.
Bugs
Thrips, aphids, fungus gnats, thrips, and root aphids are common weed pests. Use organic sprays, predator bugs, and sticky traps for organic control.
Powdery mildew
Excessive humidity encourages powdery mildew and bud rot. Increase circulation and circulation while lowering humidity below 50% during bloom.
Summary
With this complete indoor marijuana growing guide, you now have the info to cultivate bountiful potent buds for personal harvests. Follow these steps and methods during the germination, growth, and flowering stages. Invest in quality gear and closely check on your plants. In time, you'll be compensated with frosty aromatic buds you grew yourself under the loving care of your green hands. Good luck cultivating!