Thinking about growing cannabis outdoors? Learn how to grow cannabis from the experts at SunMed Growers—covering sunlight, soil, watering, and more for a successful outdoor grow.

Growing Cannabis Outdoors

Why Grow Cannabis Outdoors?

Growing cannabis outdoors connects you directly to nature — and your plants benefit, too. Sun-grown cannabis develops richer terpenes, natural flavor, and stronger aromas thanks to real sunlight and open-air conditions. Outdoor cultivation can also produce higher yields, cost less, and have a lower carbon footprint compared to indoor grows.

With the right setup and timing, anyone can grow healthy cannabis plants right in their backyard, garden, or greenhouse.

Benefits of Sun-Grown Cannabis

More Terpenes from Natural Light

Cannabis grown outdoors tends to have a higher concentration of terpenes. Natural sunlight also helps cannabis plants produce more terpenes, the aromatic compounds that give weed its unique scent and flavor. 

Lower Carbon Footprint

Compared to indoor growing, outdoor cultivation is more sustainable and eco-friendly. It eliminates the need for high-intensity lights, air conditioning, and other energy-draining indoor cultivation equipment. That’s why growing cannabis outdoors is also generally more affordable. Coupled with other sustainable farming practices, sun-grown cannabis is easily the best choice for eco-conscious consumers.

When Does the Outdoor Growing Season Start?

For most climates, aim to plant cannabis outdoors between late April and early June, when daytime temperatures reach 70–85°F and you get 12+ hours of sunlight. Harvest typically happens between mid-September and early October. In warmer climates or greenhouses, you can grow nearly year-round.

5 Expert Tips for Growing Cannabis Outdoors

1. Prioritize Sunlight

Cannabis needs at least six hours of direct sunlight daily. Choose a sunny, south-facing location and remember that the sun’s position shifts throughout the season. Plants grown in shade often produce smaller, less potent buds.

2. Choose Between Pots or Ground

• In-ground: allows roots to expand, leading to bigger plants and larger yields.

• Pots: give more control over watering, soil, and mobility — great for regions with unpredictable weather.

Whichever you choose, ensure proper drainage to prevent root rot.

3. Use Nutrient-Rich Soil

Healthy soil is the foundation of a successful grow. Aim for soil that’s well-aerated, full of organic matter, and has a balanced pH between 5.8–6.5. Test your soil and amend it with compost or natural fertilizers for health and drainage.

4. Keep Pests Under Control Naturally

Skip harsh pesticides — your crop is meant to be consumed. Instead, use beneficial insects like ladybugs or companion plants like basil or marigolds to deter pests. Regular inspection and early intervention are key.

5. Prune for Light and Airflow

Pruning improves airflow, reduces mold risk, and helps your plant focus energy on bud production. Trim away lower or crowded branches — but don’t overdo it. Healthy pruning keeps plants balanced and thriving.

Common Outdoor Growing Questions

How much should I water my cannabis?
Outdoor plants typically need 2–6 gallons per day, depending on size, soil, and weather. Water until about 25–30% of the pot’s capacity and ensure good drainage.

Can cannabis handle cold weather?
Cannabis prefers 70–85°F by day and 10°F cooler at night. While it can tolerate temperatures as low as 40°F, frost can cause lasting damage. Cover or move potted plants indoors during cold snaps. You can also consider growing in a greenhouse to avoid temperature constraints and grow year-round. 

When should I harvest?
Watch your trichomes — when they turn from clear to cloudy or slightly amber, your buds are at peak potency. For most outdoor growers, October is peak harvest season.

Try Our Sun-Grown Cannabis

Growing great cannabis takes hard work and dedication. At SunMed Growers, we offer high-quality cannabis grown in our state-of-the-art, Dutch-style greenhouse. We utilize the best of both outdoor and indoor growing methods to deliver premium quality products at a reasonable price. To explore our offerings, find a dispensary near you.