
Grandaddy Purple Autoflower Cannabis Seeds
- Green, purple, and oh-so-fruity
- Sink into deep contentment with 16–19% THC
- Compact and fast-flowering plants
- Ideal for beginners, beloved among veterans
- Big buds; big results
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THC | 16-19% |
CBD | 2% |
Lineage | Purple Urkle x Big Bud x Ruderalis |
Type | Mostly Indica |
Yield Indoor | 1.3-1.8 oz oz/m2 |
Yield Outdoor | 10 oz oz/plant |
Flowering Time | 8-10 Weeks |
Flowering Style | Autoflowering |
Harvest Month | October |
Grows | Greenhouse Indoor Outdoor |
Climate | Temperate/Continental Sunny/Mediterranean Cool/Cold |
Beginner | Yes |
Medical | Fatigue Muscle Spasms Stress |
Effects | Focused Happy Relaxed |
Flavor | Berry Sweet |
Primary terpenes | Alpha-pinene |

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We ship to the U.S. We offer tracked shipping from $10.99 and FREE Shipping for orders over $99 . Once your order is confirmed, you will receive a tracking ID by email. Your seeds will arrive in between 4-9 days. However, it can take longer in some cases.
Granddaddy Purple auto is a relaxing strain with medium THC levels and sweet flavors. It's suitable for beginners, flowers quickly, and provides rewarding yields.
What are Granddaddy Purple auto cannabis seeds?
Granddaddy Purple auto seeds result from a Purple Urkle x Big Bud x ruderalis cross. They grow into indica-dominant plants with 16–19% THC and around 2% CBD.
The crops are straightforward to cultivate. Their indica and ruderalis genetics mean you get convenient, hassle-free growing traits.
The Granddaddy Purple autoflower height is 1.9–3.3 feet inside and out. These crops are ideal for smaller spaces and guerilla growing. Expect 14–19 oz./m² indoors and around 10 oz./plant outside.
These seeds develop into eye-catching plants with dense, bright purple and green buds. They contain the alpha-pinene and linalool terpenes. These compounds contribute to delicious flavors and exceptional effects.
What are the Granddaddy Purple auto effects?
Granddaddy Purple autoflower is a soothing strain ideal for unwinding in the evenings. Its indica-dominant effects take hold soon after your first puff. A wave of euphoria lifts your spirits as you sink into pure bliss.
Some users report an increased appetite coupled with couch-lock. Grab your munchie snacks before toking, as you won't want to leave your spot once the high sets in.
Granddaddy Purple auto boosts happiness and helps you feel more focused. Some report it calms their busy thoughts and relaxes their nerves. You experience a soothing buzz coursing through your body as you drift off to wonderland.
Medicinal users praise this strain for its heavenly therapeutic potential. It may combat fatigue and promote better sleep thanks to its relaxing effects. It could also ease muscle spasms. Some patients report relief from chronic pain, stress, and anxiety.
Granddaddy Purple auto taste and smell
Granddaddy Purple autoflower exudes exotic scents reminiscent of a sweet fruit garden. The plants make your grow room smell like berries.
You taste a combination of berries and grapes when you inhale after lighting up the buds. The smooth smoke provides notes of tropical spices that dance on your tongue. You notice hints of earth as you exhale, leaving a sweet yet pleasantly spicy aftertaste.
How to germinate Granddaddy Purple auto seeds
Germination is a crucial step toward reaping a healthy Granddaddy Purple autoflower yield. The paper towel technique is the best for ensuring optimal growth. Gather a spray bottle, two sheets of paper towels, purified water, and two dinner plates.
Use the spray bottle to make the paper towels slightly moist. Lay your seeds an inch apart across one sheet set on the first plate. Cover them with the second towel, then create a lid by placing the second plate on top.
Store your Granddaddy Purple autoflower seeds in a dark, dry, and warm area. They're ready for planting when they sprout tiny taproots. Record your attempts with videos or photos in case your seeds don't pop. Take advantage of our germination guarantee and contact us for replacements.
Granddaddy Purple autoflower seeds grow guide
Growing Granddaddy Purple autoflower is a fun and rewarding experience. It's suitable for beginners and experienced cultivators. The plants thrive inside, outdoors, or in greenhouses.
This strain prefers mild climates and humidity-controlled areas. Indoor cultivation is ideal, as it lets you control the conditions to keep your crop happy. These plants are compact, so you don't need a massive grow room for successful results.
Keep track of Granddaddy Purple auto with a week-by-week diary. Maintain consistent conditions and ensure steady airflow throughout the room.
Provide temperatures of 68–80°F during the day. Drop them by 7–9°F overnight. Ensure the humidity levels remain stable at 55–60% when your plants are vegging. Lower them to 40% during flowering and around 30% close to harvest time.
Granddaddy Purple auto switches to flowering without external light influence. The plants still need consistent illumination. Use LED globes and keep them on for 18–20 hours daily. They need 4–6 hours of darkness.
This strain enjoys outdoor growing with plenty of sunshine and steady airflow. It also manages in cold environments, but moving them inside is best if temperatures drop too low.
The plants display average resistance to spider mites, botrytis, and mildew. Increase this factor by supplying them with a plant protector supplement. Buy a cannabis fertilizer with the optimal N-P-K ratios for each growth stage.
Grow your Granddaddy Purple autoflower seeds in organic soil for optimal results. Water them consistently, ensuring the top inch of earth doesn't run dry. Use coco coir, peat, or perlite to boost moisture retention. They also help improve airflow across the plants.
Expect your crop to flower 8–10 weeks from seed. Enjoy abundant yields in around mid-October if you start germination in April.
Where is the best place to buy Granddaddy Purple auto seeds in the USA?
Homegrown Cannabis Co. is the best place to get Granddaddy Purple auto. Our high-quality cannabis seeds have stable genetics and are available in the following packs:
- 4-pack: $70
- 8-pack: $88
- 12-pack: $110
- 24-pack: $225
Visit our wholesale section to find unbeatable deals if you want to buy weed seeds in bulk. Keep an eye out for rotating promotions and enticing new strains.
Join our Homegrown Forum to discover top tips for cannabis cultivation. Visit Homegrown Diaries to start your Granddaddy Purple autoflower diary. Share photos, progress, and exciting growing stories with fellow cultivators worldwide.