Growing cannabis outdoors means planting after your last frost, giving each plant 5 to 10 gallons of amended soil or a sunny in-ground bed, and letting natural photoperiod trigger flowering as days shorten in late summer. Most outdoor plants finish between late September and mid-October, depending on strain and region.
Why we grow outdoors at our Colorado nursery
Outdoor cannabis rewards you with big plants and low electricity bills, but it asks for patience. We run a Colorado nursery, and the sun does work no LED panel matches for free. The tradeoff is that you get one real shot per season, and the weather votes on your outcome. A single plant in good ground can yield a pound or more, where an indoor tent plant might give a few ounces. If you are weighing your options, our breakdown on indoor vs outdoor growing lays out the honest pros and cons.
Start with strong genetics. We ship freshly rooted clones that are female-guaranteed and HLVd-tested, which saves you from culling males and from a hidden viroid stunting your whole row. If you are still deciding between clones and seed, read our take on clones vs seeds.
Picking your spot and soil
Cannabis wants at least 6 hours of direct sun, and 8 or more is better. South-facing exposure, away from tall fences and trees, gets you the most light. Airflow matters too. A plant tucked in a dead-air corner holds moisture on the leaves and invites mold.
For soil, we like a living mix heavy on compost, worm castings, and aeration from perlite or rice hulls. Aim for a pH near 6.5 in soil. If your native ground is clay or sand, dig a 3-foot hole and backfill with amended soil, or run fabric pots. Our guide to the best soil for clones covers mixes we actually use.
Season timeline, month by month
| Month | What happens | What we do |
|---|---|---|
| April to May | Frost risk fading | Harden off clones, transplant after last frost |
| June to July | Fast vegetative growth | Top or train, feed nitrogen, watch pests |
| Late July to Aug | Flowering starts as days shorten | Switch to bloom nutrients, add support stakes |
| Sept to Oct | Bud fill and ripening | Scout for bud rot, flush, harvest by trichomes |
Training and feeding through the season
Big outdoor plants get top-heavy and shade themselves. We top early, around the fifth node, then use low-stress training to spread the canopy wide and flat. That opens the interior to light and air. Our topping vs LST guide walks through both.
Feeding shifts through the year. Veg wants nitrogen; flower wants phosphorus and potassium. Overfeeding burns tips, so we ramp up slowly and read the leaves. If you see yellowing, clawing, or spotting, check our deficiency guide before you dump more product on the roots.
Harvest and finishing
We call harvest by trichomes, not the calendar. When most heads turn cloudy with a few amber, the plant is ready. A jeweler's loupe or a cheap USB scope tells the truth. After chopping, slow drying at around 60 degrees and 60 percent humidity for 7 to 14 days protects terpenes. Then jar and burp. Our drying and curing walkthrough keeps you from ruining good flower at the finish line.
Frequently asked questions
How much sun does outdoor cannabis need?
Six hours of direct sun is the floor, and 8 to 10 hours gives you dense buds and strong yields. A south-facing, open spot beats a shaded yard every time. Less light means airier flower and lower weight, so pick the sunniest patch of ground you have available before you plant anything.
When do outdoor plants start flowering?
Photoperiod strains flower on their own as daylight drops toward roughly 14 hours, which usually lands in late July or August across most of the United States. You do not flip a switch outdoors. The plant reads the shortening days and starts stacking flower sites without any input from you.
Can beginners grow cannabis outdoors?
Yes, and it is often easier than indoor growing because the sun and rain do much of the work. Start with one or two freshly rooted clones, healthy soil, and a sunny spot. The main beginner mistakes are overwatering, planting too early, and ignoring mold as buds fatten in fall.
How many plants can I grow per season?
That depends on your local rules and your space. Legally, many states cap home grows at 6 plants. Practically, a full-size outdoor plant needs 4 to 6 feet of spread, so give each one room. Crowding kills airflow and invites the mold problems that end otherwise good seasons.
Ready to plant a strong season? Browse our cannabis clones for sale and start with freshly rooted, female-guaranteed genetics built for outdoor vigor.