This is our complete cannabis grow guide: every step of a home grow, from checking the law and picking seeds to drying and curing your first harvest, in plain English. Read it top to bottom for a full course, or jump to the stage you’re in right now. Each step links to a deeper guide with checklists, troubleshooting and FAQs.
Hollywood’s Grow Guide is named for my dad, Hollywood. He was a cool dad with a real passion for exploring medical marijuana and for growing it where it’s legal. This site carries that on: we teach adults how to grow legal cannabis at home, the honest way. When it’s time to buy seeds, we recommend ILGM, and we’re an ILGM affiliate. We’ll always tell you that straight.
The whole grow on one screen:
| Stage | What happens | Rough time | Start here |
|---|---|---|---|
| 0. Plan | Check the law, pick a space, set a budget | 1 weekend | Is it legal to grow at home? |
| 1. Seeds | Choose autoflower or feminized, pick a strain | 1 evening | Autoflower vs feminized vs regular |
| 2. Germination | Crack the seed, get a taproot | A few days | How to germinate seeds |
| 3. Seedling | First leaves, gentle light, light watering | About 2–3 weeks | Seedling care |
| 4. Vegetative | Fast leafy growth, training | Weeks (photos) or a few weeks (autos) | Vegetative stage |
| 5. Flowering | Buds form and ripen | About 8–10 weeks for many strains | Flowering week by week |
| 6. Harvest | Cut when trichomes say so | 1 day | When to harvest |
| 7. Dry & cure | Slow dry, then jar cure | 1–2 weeks dry, 2+ weeks cure | Drying & curing |
Times vary a lot by strain and setup. Always go by the plant, not the calendar.
How Do You Grow Cannabis at Home? The 12 Steps
Here’s the full path. Each step is a short summary; the linked guide goes deep.
Step 1: Check the law and plan your grow
Before you spend a dollar, confirm that home growing is legal where you live, how many plants you can have, and whether your lease or HOA has a say. Then pick indoor or outdoor, choose a space and set a realistic budget.
→ Is It Legal to Grow Cannabis at Home? A Planning Checklist · Grow Laws by State · Indoor vs Outdoor
Step 2: Choose the right seeds
For a first grow, most people do best with feminized autoflowers: no males to weed out, no light-schedule switch, and small plants. Feminized photoperiods are the next step up when you want bigger plants and more control.
→ Autoflower vs Feminized vs Regular Seeds · Best Autoflower Seeds for Beginners · Best ILGM Seeds for Beginners · Best High-Yield Strains
Step 3: Set up your grow space
Indoors, a grow tent makes everything easier: it’s lightproof, reflective, and built for a fan and filter. A 2×2 or 2×4 tent is plenty for one to two autoflowers.
→ Grow Tent Setup: Step by Step
Step 4: Get the light right
Light is the engine of the whole grow. A quality full-spectrum LED sized for your tent beats a bigger cheap one. You’ll also learn light schedules: 18/6 for photoperiod veg, 12/12 to flower, and long days all the way through for autos.
→ Cannabis Grow Lights Explained
Step 5: Control airflow, temperature and humidity
Fresh air in, stale air out, a gentle breeze across the plants, and humidity that drops as the plant matures. VPD sounds technical, but it’s just a way to balance temperature and humidity.
→ Grow Tent Ventilation and VPD
Step 6: Pick a growing medium
Soil is the most forgiving. Coco grows faster but needs more frequent feeding. Hydro is fastest and least forgiving.
Step 7: Germinate your seeds
The paper towel method is simple and reliable. Keep things warm, damp (not soaked) and dark, and plant the seed once the root shows.
→ How to Germinate Cannabis Seeds · ILGM Germination Guarantee Explained
Step 8: Baby your seedlings
Seedlings need gentle light, high humidity and very little water. Overwatering kills more seedlings than anything else.
→ Cannabis Seedling Care · How to Water Cannabis Plants
Step 9: Feed lightly and grow big in veg
Start nutrients low and raise them slowly, check pH, and let the plant tell you when it wants more.
→ Cannabis Feeding Schedule · The Vegetative Stage
Step 10: Train for a flat, even canopy
Low-stress training (LST), topping and a screen (SCROG) spread the plant out so more bud sites get strong light.
→ Cannabis Plant Training: LST, Topping and SCROG
Step 11: Flower, watch and troubleshoot
Flowering is where buds form. Know what normal looks like each week, and learn to spot deficiencies, pests and mold early.
→ Flowering Week by Week · Nutrient Deficiencies · Pests · Mold and Bud Rot
Step 12: Harvest, dry, cure and store
Harvest by looking at the trichomes with a magnifier. Then dry slowly, cure in jars, and store cool, dark and airtight.
→ When to Harvest · How to Dry and Cure · How to Store
Growing outside instead? Read How to Grow Cannabis Outdoors.
What Do You Need to Start Growing Cannabis?
A simple indoor setup for one or two plants:
- Seeds: a small pack of feminized autoflowers, so you have backups. ILGM autoflowers.
- Grow tent: 2×2 or 2×4 feet.
- LED grow light sized for the tent.
- Inline fan + carbon filter for fresh air and smell control, plus a small clip fan.
- Pots: 3–5 gallon fabric pots for autos.
- Medium: a light, airy potting mix (or coco if you’re ready to feed often).
- Nutrients: a simple grow and bloom set. ILGM also sells nutrients and grow kits.
- Meters: pH pen or test drops, thermometer/hygrometer.
- Harvest tools: a jeweler’s loupe or pocket microscope, trimming scissors, airtight jars.
If you would rather buy everything at once, ILGM sells complete grow kits, and our Gear hub covers more options.
How Long Does It Take to Grow Cannabis?
From seed to a jar you can enjoy, plan on roughly three to five months:
- Autoflowers often finish in about 2.5–3.5 months from seed, depending on the strain.
- Photoperiods take longer because you choose how long they stay in veg, then most strains flower for around 8–10 weeks after you switch to 12/12.
- Drying and curing add about 3–6 more weeks.
The seed bank’s timeline is an estimate. Your plant’s trichomes make the final call.
How Much Does It Cost to Grow Cannabis at Home?
A small tent setup is a one-time cost you reuse grow after grow. The big pieces are the light, the tent and the fan. Seeds, soil and nutrients are your per-grow costs. Spend on the light and ventilation first, and save on extras like fancy controllers until you know you’ll keep growing.
Hollywood’s tip: Your first grow is tuition, not a test. Keep a notebook: date, water, feed, pH, temperature, humidity and a photo every few days. By grow two you’ll be reading your own notes instead of guessing, and that’s when growers really level up.
The 7 Mistakes That Ruin Most First Grows
- Overwatering. Roots need air. Water when the pot feels light, not on a schedule. Watering guide.
- Overfeeding. Start at a fraction of the label dose. Feeding schedule.
- Ignoring pH. Nutrients get locked out when pH drifts.
- Light too close or too weak. Follow your light maker’s distance guidance and watch the top leaves. Lights guide.
- No airflow. Stale, humid air invites mold and pests. Ventilation.
- Transplanting or topping autoflowers late. Autos have a fixed clock and little time to recover.
- Harvesting by the calendar. Check the trichomes. Harvest timing.
Which Strains Have Full Grow Guides?
If you’re starting with one of ILGM’s classic beginner autoflowers, we have a dedicated guide for each. They cover what ILGM lists for timing, size and yield, how to set up, and what to watch for at every stage:
- Northern Lights Auto grow guide: the forgiving classic.
- White Widow Auto grow guide: the famously frosty classic.
- Blueberry Auto grow guide: berry aroma and, in the right conditions, purple tones.
- Gorilla Glue Auto grow guide: a bigger yielder that ILGM describes as mold-resistant.
Growing any autoflower? Follow our autoflower week-by-week timeline from sprout to harvest.
Where Should You Buy Cannabis Seeds?
We recommend ILGM, and we’re an ILGM affiliate. Here’s why it’s our pick for readers, based on ILGM’s own published policies (checked October 31, 2026):
- ILGM ships within the US from a US warehouse, with tracked USPS delivery, in discreet packaging with no mention of cannabis or ILGM on the outside.
- ILGM offers a germination guarantee: if you follow its paper towel method and seeds don’t sprout, it replaces them (terms apply, including proper storage and using its method).
- ILGM has a beginner collection, a large autoflower range and free guides like the Grow Bible.
Read the full breakdown in our ILGM review. Buying and growing seeds is regulated by state law, so check your state first.
Frequently Asked Questions
Is growing cannabis hard?
No, not if you start simple. One or two autoflowers in a small tent, good light, light feeding and careful watering will get most beginners a real harvest. Most failures come from doing too much, not too little.
What’s the best cannabis to grow for a beginner?
A feminized autoflower with a beginner label from the seed bank, like the classics in our best autoflowers for beginners list.
Can I grow cannabis without a grow tent?
Yes, in a closet or spare room, but a tent makes light, airflow and smell control much easier for a small cost.
How many plants should I grow the first time?
One or two, and never more than your state allows. Fewer plants means you can give each one full attention.
Indoors or outdoors for a first grow?
Indoors gives you control and year-round growing; outdoors is cheaper but depends on climate, privacy and local rules. Compare both in indoor vs outdoor cannabis growing.
What’s the one thing I should buy first?
After seeds, a good LED light. It decides your yield and quality more than any other piece of gear.
Where can I learn more for free?
Every guide on this site is free, and ILGM’s free Grow Bible is a solid companion read.
Disclaimer: For adults 21+ and educational purposes only. Grow only where home cultivation is legal, and follow your state and local rules. We make no medical claims. Product details, prices and policies are set by the seller and can change, so check the seller’s page before you buy.