Whether you're new to weed cultivation 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, growing weed indoors can be an extremely rewarding and cost-effective endeavor.
Choosing Cannabis Varieties
The first step in planning your indoor crop is selecting the right weed cultivars to produce. The three main types of weed plants each have their own characteristics.
Sativas
Known for their uplifting intellectual effects, sativas grow tall and slender with narrow leaves. They flourish in hotter equatorial 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 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 Cultivation Space
Cannabis plants need the right controlled environment to thrive. Key factors for indoor grows are lights, airflow, layout, and finding the ideal discreet spot.
Location
Choose an available space with quick access to irrigation and electrical outlets. An empty extra bedroom, unused closet, basement corner, or cultivation tent locked away in a garage all make great hidden cultivation room spots.
Lighting
Marijuana requires intense light for all vegetative stages. LEDs are energy-efficient and come in full spectrum options simulating real sunlight. Provide 250-400 watts per square foot for the growth stage and 400-600 watts per square foot for bloom.
Airflow
Proper airflow and exhaust systems keep ideal temp, humidity, and pure CO2 levels. Set up quiet 4-6 inch blowers or carbon filters to refresh old air and eliminate smells.
Layout
Optimize your space by arranging plants carefully under the lamps and leaving room to access and work around them. Set up distinct zones for growth, flowering, drying, and propagation.
Growing Substrates
Pot can be cultivated in various mediums, each with pros and cons. Pick a suitable option for your specific setup and growing style.
Soil
The classic substrate, soil is inexpensive and easy for beginners. It provides great flavor but requires more watering and fertilizing to nourish plants. Amend soil with vermiculite or coir to enhance aeration.
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.
Water systems
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 radicles. This readies them for transplanting into their cultivation medium.
Towel Method
Put seeds between wet paper towel and maintain them damp. Inspect after 2-7 days for emerging taproots indicating germination is complete.
Direct Planting
Insert seeds right into wetted cultivation medium 6mm deep. Gently water and wait 1-2 weeks until sprouts push through the surface.
Rockwool Cubes
Soak cubic rockwool starters in pH-adjusted water. Place seeds 1⁄4 inch deep into the cubes. Keep cubes moist until seedlings emerge within 1-14 days.
Transplanting Young plants
Once germinated, marijuana young plants need to be transplanted to avoid overcrowding. Move them into appropriately sized pots.
Ready Containers
Load final pots with cultivation medium enriched with time-released nutrients. Allow containers to soak up water for 8-12 hours before transplanting.
Carefully Transplanting
Gently loosen seedling roots from sprouting medium using a spade. Place into prepared container at equal depth as before and gently water in.
Vegetative Stage
The vegetative stage encourages foliage and plant structure through 18-24 hours of continual lighting exposure. This stage usually lasts 4-8 weeks.
Using 3/4 to full day of Light
Use grow lights on a 24 daily schedule or natural sunlight to trigger nonstop growth. Light intensity influences size and node distance.
Nutrients
Use vegetative stage fertilizers richer in nitrogen. Make sure pH stays around 5.8-6.3 for proper nutrient uptake. Fertilize 1⁄4 to 1⁄2 concentration after 14 days and increase gradually.
LST and topping
Topping, low stress training, and trellising manipulate growth shapes for even canopies. This boosts 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.
Changing Light Schedule
Change grow lights to 12/12 or move outside for natural 12/12 timing. This triggers plants to start blooming.
Stop Fertilizing
Leaching removes fertilizer residuals to improve flavor. Feed weakly the first period then just use plain water the last 2 weeks.
Flushing
Continue 12 hour photoperiod but flush using neutral pH water only. Resume plain watering if buds aren't yet mature after two weeks.
Reaping
Knowing when marijuana is completely mature ensures peak cannabinoid content and aroma. Harvest plants at optimal maturity.
Signs of readiness
Check propagate cannabis guide swollen calyxes, faded pistils, and 5-15% cloudy trichs. Check buds around the plant as they won't all ripen evenly.
Harvesting plants
Use clean, sharp pruning shears to gently cut each plant at the base. Leave 5-10cm of stalk attached.
Drying
Suspend whole plants or colas inverted in a dark room with average temp and humidity around 50-60% for 1-2 weeks.
Aging
Curing continues desiccating while aging the buds like fine wine. This technique mellows harshness and further develops terpene contents.
Jars and Humidity
Manicure cured buds from stems and place into sealed containers, packing about 75% capacity. Use a hygrometer to measure container moisture.
Burping Daily
Open containers for a few hours daily to gradually reduce humidity. Remoisten buds if humidity goes under 55%.
Long term storage
After 2-3 weeks when humidity levels off around 55-60%, do a final trim and store forever in airtight jars.
Troubleshooting
Even experienced growers run into different marijuana plant problems. Detect issues early and address them properly to keep a vibrant garden.
Poor feeding
Yellowing leaves often indicate insufficient nitrogen. Anthocyanins and leaves signal low phosphorus. Check pH and increase fertilizers slowly.
Bugs
Thrips, aphids, fungus gnats, thrips, and root aphids are common weed pests. Use neem oil 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 under 50% during bloom.
Summary
With this complete indoor pot growing guide, you now have the info to grow plentiful potent buds for personal harvests. Apply these techniques and methods during the germination, growth, and flowering stages. Invest in quality gear and closely check on your plants. In time, you'll be rewarded with frosty aromatic buds you raised yourself under the patient guidance of your green hands. Happy growing