Whether you're new to marijuana production 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 gear, techniques, and care, cultivating pot indoors can be an extremely productive and cost-effective endeavor.
Choosing Marijuana Strains
The first step in planning your indoor grow is choosing the right pot varieties to cultivate. The three main types of cannabis plants each have their own qualities.
Energizing strains
Known for their invigorating cerebral effects, these strains spread tall and slender with narrow leaves. They thrive in warmer tropical climates and have a longer blooming time between 10-12 weeks indoors. Top sativa strains include Sour Diesel, Durban Poison, and Jack Herer.
Relaxing strains
These strains provide relaxing body-focused effects and spread short and bushy with broad leaves. Accustomed to colder mountain climates, they flower faster within 2-2.25 months. Popular relaxing strains include Northern Lights, Bubba Kush, and Bubba Kush.
Mixed strains
Hybrid varieties mix traits from both sativas and relaxing strains. They offer combined effects and have moderate blooming periods around 2.25-2.5 months. Popular hybrids are Blue Dream, OG Kush, and Blue Dream.
Setting Up Your Grow Space
Pot plants need the right controlled environment to thrive. Key factors for indoor cultivations are lighting, airflow, layout, and finding the ideal discreet location.
Location
Choose an available space with easy access to irrigation and power outlets. An empty extra bedroom, unused 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 efficient and come in full spectrum options replicating natural outdoor light. Provide 15-25 watts per sq. ft for the growth stage and 20-40 watts per sq. ft. for flowering.
Ventilation
Proper ventilation and exhaust systems maintain ideal temperature, moisture, and fresh CO2 levels. Install low-noise 4-6 inch blowers or carbon filters to circulate old air and eliminate odors.
Layout
Optimize your space by arranging plants strategically under the lamps and leaving room to access and work around them. Set up distinct zones for growth, flowering, curing, and propagation.
Cultivation Substrates
Pot can be cultivated in different mediums, each with pros and cons. Pick a appropriate option for your particular setup and growing style.
Soil
The classic medium, soil is cheap and easy for beginners. It provides excellent taste but needs more irrigation and nutrients to feed plants. Enrich soil with vermiculite or coco to improve drainage.
Coco Coir
Made from coconut husks, reusable coco coir retains water but still allows air to the roots. It's more sterile and more consistent than soil. Use coco-specific nutrients to avoid calcium buildup.
Hydroponics
In hydro systems, plant roots grow directly in nutrient water solution. This allows rapid growth but needs close monitoring of water chemistry. Deep water culture and drip systems are common techniques.
Germinating Seeds
Sprouting prepares your pot seeds to start growing taproots. This prepares them for planting into their cultivation medium.
Towel Method
Put seeds between wet paper towel and maintain them damp. Check after 2-7 days for emerging taproots indicating germination is complete.
Planting directly
Insert seeds right into wetted cultivation medium 6mm deep. Gently water and wait 1-2 weeks until sprouts push through the surface.
Cubic rockwool
Soak rockwool cubes in pH-adjusted water. Place seeds 6mm deep into the cubes. Keep cubes wet until seedlings emerge within 1-14 days.
Repotting Young plants
Once germinated, marijuana seedlings need to be repotted to avoid overcrowding. Move them into appropriately sized pots.
Ready Containers
Fill final pots with cultivation medium enriched with time-released nutrients. Allow pots to soak up water overnight before repotting.
Gently repotting
Gently separate seedling roots from sprouting medium using a spade. Place into prepared pot at equal depth as before and lightly water in.
Vegetative Stage
The growth stage encourages leafy growth and plant structure through 3/4 to full day of continual light exposure. This stage usually lasts 1-2 months.
Using 18-24 Hours of Light
Use lamps on a 24 daily cycle or natural sunlight to trigger nonstop growth. Light output influences height and internodal spacing.
Fertilizing
Use grow stage nutrients higher in N. Make sure pH remains around 6.5 for full fertilizer absorption. Fertilize 25-50% strength after 14 days and strengthen gradually.
LST and topping
Fimming, low stress training, and trellising direct growth shapes for flat canopies. This increases yields.
Flowering Stage
The blooming stage develops buds as plants reveal their sex under a 12/12 cycle schedule. It lasts 2-3 months depending on variety.
Switching to 12/12
Switch lamps to 12 hours on, 12 hours off or place outdoors for outdoor 12/12 timing. This triggers plants to begin flowering.
Flushing
Flushing flushes out fertilizer residuals to improve flavor. Fertilize lightly the first weeks then just use pH'd water the final 2 weeks.
Flushing
Continue 12 hour photoperiod but flush using neutral pH water only. Return to plain watering if buds aren't yet mature after two weeks.
Harvesting
Recognizing when weed is completely mature ensures peak cannabinoid content and aroma. Cut down plants at peak ripeness.
Signs of readiness
Look for fading pistils, swelling calyxes, and 10-15% cloudy trichs. Inspect buds across 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 5-10cm of stalk attached.
Drying
Hang intact plants or colas upside down in a dark room with moderate temperature and humidity around 45-65% for 1-2 weeks.
Curing
Curing keeps desiccating while aging the buds like fine wine. This technique mellows harshness and intensifies terpene contents.
Jars and Humidity
Manicure cured buds from branches and place into glass jars, packing about 75% capacity. Use a hygrometer to monitor container humidity.
Burping Daily
Unseal containers for a short time daily to slowly reduce moisture. Rehydrate buds if humidity drops below 55%.
Final Cure
After 14-21 days when moisture stabilizes around 55-65%, perform a last manicure and keep forever in sealed jars.
Common Problems and Solutions
Even seasoned cultivators run into different cannabis plant problems. Identify issues soon and fix them correctly to keep a healthy garden.
Nutrient Deficiencies
Chlorosis often signify insufficient nitrogen. Purpling stems and leaves show phosphorus deficiency. Test pH and boost fertilizers slowly.
Bugs
Spider mites, fungus gnats, thrips, and root aphids are common weed pests. Use organic sprays, predator bugs, and yellow traps for organic control.
Powdery mildew
Excessive moisture encourages powdery mildew and bud rot. Improve airflow and circulation while lowering humidity below 50% during flowering.
Summary
With this complete indoor marijuana growing guide, you now have the knowledge to grow bountiful potent buds for grow cannabis personal harvests. Apply these techniques and methods during the seed starting, vegetative, and flowering stages. Spend in good gear and closely monitor your plants. In time, you'll be rewarded with frosty fragrant buds you raised yourself under the patient guidance of your green thumbs. Happy growing