🍪 Growing Girl Scout Cookies Autoflower: Timeline, Soil, Nutrients & Yield TipsUpdated a day ago

Girl Scout Cookies Autoflower is a fast-flowering, indica-dominant hybrid known for its sweet flavor, potent effects, and ease of growth. This guide covers essential grow details, including soil, nutrients, training techniques, and timing for the best yield and potency.

Key Characteristics

• Type: Indica-dominant autoflower

• THC: Up to 24%

• Grow time: 8–10 weeks from sprout

• Size: 2–4 feet tall

• Yield: 4–6 oz per plant outdoors; up to 6 oz/m² indoors

Ideal Soil Setup

Girl Scout Cookies autoflowers perform best in light, well-draining soil with moderate nutrient content.

Recommended soil mix:

• 60% organic potting soil or coco coir

• 20% perlite or pumice for drainage

• 20% compost or worm castings

• Optional: Add mycorrhizae or microbial inoculants to boost root health

Avoid soils with time-release fertilizers, as they can overfeed young autos and stunt growth.

Nutrient Schedule by Growth Stage

Use a feed–water–water cycle to avoid nutrient buildup. Maintain pH around 6.2–6.5 in soil, 5.8–6.2 in coco.

Light & Training

• Light cycle: 18/6 or 20/4 throughout

• Light type: Full-spectrum LED or HPS

• Training: Use low-stress training (LST) during weeks 2–4

• Avoid topping or high-stress techniques — autos have limited recovery time

Environmental Conditions

• Temperature: 70–78°F (21–26°C)

• Humidity:

  • 65% (seedling)

  • 55% (veg)

  • 40–45% (flower)

Maintain good airflow and avoid excessive humidity in flowering to prevent mold.

Harvest Timing

Check trichomes with a jeweler’s loupe:

• Cloudy trichomes = peak THC

• Amber trichomes = stronger body effects

Most GSC autos are ready around day 70–75. Flush for the last 7–10 days before harvest.