Corkscrew Auto Seeds
Autoflower Seeds
Various Quantities
Price range: $13.50 through $92.00
Cherry Pie Auto x Tangie. Sativa Dominant. Autoflowering feminized seeds by Royal Queen Seeds.
Corkscrew autoflowering cannabis seeds by Royal Queen Seeds. Corkscrew is a sativa-dominant autoflower that sets Tangie genetics on a self-flowering Cherry Pie base, made for growers who want a longer-running auto with strong indoor output. Available as single seeds and in 3, 5 and 10-seed packs.
Grow specs
| Genotype | Sativa Dominant |
|---|---|
| Genetics | Cherry Pie Auto x Tangie |
| Seed type | Feminized, autoflowering |
| Seed to harvest | More than 12 weeks |
| Indoor yield | High (450 to 600 g/m²) |
| Outdoor yield | Modest (up to 200 g per plant) |
| THC | High (16 to 24%) |
| CBD | Low (0 to 1%) |
| Plant height | Medium |
| Flavor | Fruity |
About Corkscrew Auto
The genetics behind Corkscrew are Cherry Pie Auto crossed with Tangie. Cherry Pie Auto contributes the autoflowering trait, while the finished plant sits on the sativa side of the spectrum.
Royal Queen Seeds rates it for high THC, 16 to 24%, with low CBD of 0 to 1%. It gives sativa fans a self-flowering option without giving up potency.
How it grows
Unlike many quick autos, Corkscrew takes more than 12 weeks from seed to harvest, so plan for a somewhat longer run than the typical self-flowering strain. That extra time comes with a high indoor yield rating of 450 to 600 grams per square meter.
Plants reach a medium height. Outdoors the yield is listed as modest, up to 200 grams per plant, so it fits balconies, patios and small garden plots where a manageable plant is the goal.
Flavor, aroma and effect
Royal Queen Seeds describes the taste of Corkscrew as fruity. As a sativa-dominant hybrid, it leans toward a lighter, more head-focused feel than a heavy indica would.
Who it is for
This one fits growers who like sativa-leaning plants but want the convenience of an autoflower. It also suits indoor growers who do not mind a few extra weeks in exchange for strong output per square meter. Beginners can handle it as well, since the plant sets its own flowering schedule and does not need a light change.
Pack options
Corkscrew Auto Seeds from Royal Queen Seeds come in 4 pack sizes: single seed ($13.50), 3 seeds ($34), 5 seeds ($51) and 10 seeds ($92). Every seed is feminized and autoflowering, so each one grows into a female plant that flowers on its own schedule without a change in the light cycle.
Seed Germination Instructions
for cannabis seeds
Step 1: Soak the seeds
- Fill a glass with clean, room-temperature water (68-77°F / 20-25°C).
- Use filtered, dechlorinated, or pH-balanced water to prevent contaminants.
- Drop the seeds into the water and gently swirl to ensure full submersion.
- If seeds float, tap them down lightly or leave them to absorb water.
- Optional: Add 3% hydrogen peroxide (H₂O₂) at a ratio of 1 ml per 100 ml of water to prevent mold and bacteria.
- Place the glass in a dark, warm location for 2-6 hours (do not exceed 12 hours to prevent drowning).
Step 2: Prepare the Germination Plate
- Dampen two layers of paper towel, cotton, or thick toilet paper with clean, dechlorinated water.
- If using toilet paper, fold multiple plies to ensure adequate thickness.
- Place seeds evenly between the layers, ensuring they do not touch each other.
- Towels should be moist but not soaking wet.
- Set the damp towel on a plate and cover with another plate or place it inside a resealable plastic bag to retain moisture.
- Store in a dark, warm location (70-78°F / 21-26°C) such as a drawer or cabinet.
- Check the moisture level every 6-12 hours and add water as needed to prevent drying.
- Expected Germination Time:
- Most seeds crack open within 48-72 hours.
- Some may take 5-6 days to show taproots.
- Older seeds or seeds with a tougher shell may take up to 10-15 days to sprout.
- If a seed has not sprouted within 10 days, gently check it for signs of swelling or softening.
Step 3: Monitor Germination
- Seeds typically crack open and develop a taproot within 48-72 hours, but some may take up to 5-6 days.
- Older or dormant seeds may take 10-15 days to sprout, especially if they have a thicker shell.
- Check regularly for signs of mold or fungal growth.
- If mold appears, replace the paper towel and rinse seeds in a diluted hydrogen peroxide solution (1 ml of 3% H₂O₂ per 100 ml water).
- The seed is ready for planting when the white taproot emerges and reaches ¼-½ inch (0.6-1.3 cm).
Step 4: Planting the Seeds
- Prepare a pH-balanced growing medium (pH 5.5-6.0) such as:
- Quality soil-perlite mix
- Coco coir with perlite
- Rockwool cubes (must be pre-soaked in pH 5.5 water)
- Plant the seed 2-5 mm deep, with the root tip facing downward.
- Use containers that are at least 10 cm (4 inches) deep with drainage holes for healthy root development.
- Lightly cover the seed with soil—do not press down too hard.
- Spray the top layer with water instead of drenching it.
Step 5: Initial Care for Seedlings
- Keep the growing medium moist but not waterlogged—spray with a spray bottle instead of overwatering.
- Maintain high humidity by:
- Covering containers with clear plastic wrap or a humidity dome.
- Ensuring there is some airflow to prevent mold buildup.
- Place seedlings under cold white LED or fluorescent lights or in indirect sunlight at 68-77°F (20-25°C).
Step 6: Gradual Exposure to Light
- Once seedlings emerge and develop their first set of leaves (cotyledons):
- Slowly introduce them to stronger light sources.
- Start with low-intensity LED, CFL, or indirect sunlight, then gradually increase exposure.
- Keep grow lights at a safe distance:
- LEDs: 12-24 inches (30-60 cm) above seedlings.
- HPS/MH: 24-36 inches (60-90 cm) above seedlings.
- If transitioning to outdoor sunlight:
- Harden seedlings off gradually by placing them outside for short periods each day.
Additional Tips
- Use filtered rainwater, bottled water, or dechlorinated tap water.
- Maintain humidity levels between 70-80% for optimal germination.
- Avoid handling the taproot directly, as it is delicate and can be easily damaged.
- If using rockwool cubes, pre-soak them in pH 5.5 water before planting.
- Germination rates depend on strain genetics, seed age, and storage conditions.
Seeds may take longer to sprout if conditions are too dry, cold, or hot.
Failure to follow these steps may reduce germination success and replacements are unlikely.
By following these steps, you’ll achieve healthy, vigorous cannabis seedlings ready for strong growth. 🌱
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