Auto GDP
Auto GDP
Also known as: Granddaddy Purple Auto, Granddaddy Purple Autoflower, GDP Auto, Auto Granddaddy Purple
Overview
Auto GDP is an autoflowering offspring strain that combines the legendary genetics of Granddaddy Purple (Big Bud × Purple Urkle) with ruderalis genetics. This strain is the auto-flowering version of the cult classic Granddaddy Purple, ready in a super quick 75 days from seed, making it one of the fastest finishing purple strains available. It offers an indica-dominant profile, with 75% indica, 20% sativa and 5% ruderalis influences.
This extra potent indica dominant strain stays short (50-100cm) and compact, developing dense, rock hard buds with the trademark deep rich purple throughout, with resin production being extremely high and later in flowering buds coated with THC trichomes. It is arguably one of the most beginner-friendly autoflowers of all time, with the GDP line being legendary for its resilience and ease of growth, incredibly forgiving of common mistakes, naturally resistant to pests and mold, and growing in a compact, manageable structure while reliably producing top-shelf cannabis with very little effort.
Auto GDP is the result of combining the original Granddaddy Purple with hardy Ruderalis genetics, where GDP herself was born in the early 2000s as a child of Purple Urkle and Big Bud, bred for color, flavor, and knock-you-out body highs, and by introducing autoflowering traits, you get all the depth and weight of the original in a smaller, faster, and more manageable format.
Effects
Reported Medical Uses
- Users report relief from insomnia
- May help with chronic pain management
- Often used for stress and anxiety relief
- May stimulate appetite
- Users report help with muscle spasms
This is not medical advice. Consult a healthcare professional.
Possible Negative Effects
Growing Information
Auto GDP typically takes 9-11 weeks from seed to harvest, with flowering beginning automatically around week 3-4. The strain stays short (50-100cm) and compact, with indoor plants peaking at 140cm and producing up to 375–450g/m² yield, while outdoor specimens can reach 150cm in height and offer 70–120g each at harvest. It is beginner-friendly with the GDP line being legendary for its resilience and ease of growth, incredibly forgiving of common mistakes, naturally resistant to pests and mold. Auto GDP does well in either soil or hydroponic environments and is an excellent option for cultivating cannabis outside in colder climates, requiring minimal attention whether planted indoors or out, making it ideal for novice gardeners. For enhanced purple coloration, introduce cooler nighttime temperatures (a drop of 10-15°F) during the last 2-3 weeks of flowering to encourage anthocyanin production.