colorado Residential Weed Growing

Colorado's climate is dry and can swing from hot to cold very quickly - especially at higher elevations.

• Indoors: Maintain temperatures between 70–85°F during the day and slightly cooler at night. Keep humidity around 40%-60%, adjusting for each growth stage
• Outdoors: Use shade cloths or greenhouses to protect plants from temperature extremes, hail, and sudden frosts.

Colorado's high elevation, dry air, and short growing season can be tough on cannabis plants. Focus on drought-tolerant and fast-flowering strains that can handle temperature swings and dry conditions. Autoflower varieties are ideal for outdoor grows, as they mature quickly and can finish before early frosts.

Starting with the right genetics gives you a better chance at healthy plants and strong harvests.

Because late frosts are common in Colorado, it's best to start seeds indoors under grow lights in early spring.

• Transplant outdoors after the last frost (usually around mid-May)
• Harden off plants gradually to help them adjust to outdoor conditions without shock

Colorado's weather can turn unexpectedly - especially during the summer.

• Set up temporary shelters, greenhouses, or hail netting to protect outdoor plants
• Portable greenhouses work great for giving flexibility while guarding against sudden storms

Even though snowmelt and mountain runoff are abundant, Colorado's soil and air are often very dry.

• Check soil moisture often and water deeply but not too frequently to encourage strong roots
• Use mulch around plants to help retain soil moisture and protect against drying winds

Cannabis plants need strong, consistent light to thrive.

• Indoors: Use full-spectrum LED lights and adjust as plants grow
• Outdoors: Choose spots with 6-8 hours of direct sunlight daily

More light means stronger, healthier plants and bigger harvests.