Q: Can a beginner grow Grandaddy Purple feminized?

A: Yes, it’s beginner‑friendly thanks to its hardy, low-maintenance nature and tolerance of minor mistakes, ideal for new growers.

Q: What is the Grandaddy Purple feminized flower time?

A: Flowering takes 8 to 10 weeks, after which dense, resinous buds are ready for harvest in early October.

Q: Does Grandaddy Purple grow better in soil or hydroponics?

A: It adapts well to both, with soil offering straightforward growing conditions and hydroponics capable of boosting yields when nutrients are well-managed.

Grandaddy Purple Feminized Marijuana Seeds

Strain Description

The Grandaddy Purple strain is a legendary Indica-dominant hybrid combining Purple Urkle with Big Bud. With around 22% THC and 0.60% CBD, it delivers the classic deeply relaxing and euphoric high across body and mind. Plants remain compact and bushy, producing dense buds with a rich profile of berry, grape, citrus, pine, and sweet notes.

Growing Information

This strain is beginner-friendly and thrives in both indoor and outdoor settings. Flowering takes 8 to 10 weeks, with harvest in October. Compact size (up to ~4 ft indoors, up to 6 ft outdoors in sun) makes it manageable, while minimal pruning supports airflow. Yields range around 400 g/m² indoors and 550 g per plant outdoors.

Quick Grow Tips

Lighting: Use a 12/12 photoperiod to trigger flowering after the veg stage

Nutrients: Use typical indica‑dominant feeding schedules, shifting toward bloom nutrients when buds begin

Watering: Maintain airflow & trim lower growth to reduce mold risk

Environment: Ideal for moderate climates; control humidity and temperature, especially during late flowering

14 reviews for Grandaddy Purple Feminized Marijuana Seeds

Rated 5 out of 5

Aaron Theo – March 5, 2026

Gorgeous purple buds, a delightful fruity taste, calming indica effects, and a very satisfying harvest.
Rated 5 out of 5

White Trash and HellBound – May 7, 2025

Great place to buy the Seeds. BC is a Pioneer in the Industry, it’s a no brainer to support the Culture from one of the Culture’s O.G. Provinces! I recommend this Company to everyone I talk to.
Rated 5 out of 5

B. Seling (verified owner) – March 14, 2024

1.) I never germinate seeds as CK suggests. However, I wanted the “warranty”. I germed all 5, all 5 had 1/2 tails within 72 hrs. 100%
2.) I screwed up 3 transplants, all 3 bounced back fast. Strong genetics
3.) She takes 4 rounds of topping with minimal shock.
4.) She grows fast, low and wide.
5.) As consistent as the early 2000s GDP as I’ve found. Beautiful genes.
Rated 3 out of 5

Chris – October 18, 2023

3 out of 5 seeds popped so not a total loss
Rated 2 out of 5

tom – February 27, 2023

purple grandad.and free seeds
Rated 4 out of 5

Mac – December 24, 2021

Small plants but oh the color! So purple almost black. I wish I could post a pic. The most eye catching plants I’ve ever seen. Great quality, patient favourite.
Rated 5 out of 5

Luis Dominguez – November 8, 2021

Grand.D…addy..! Purple. Is..one..my…favorite. Strains.😎😋😋Love…its..taste?? Great..buds.😋😋cropking.seeds..has..fast..shipping. One..happy. Customer.😎😎😎Thanks??
Rated 5 out of 5

Michigan – April 17, 2021

Crop king is great every time. No problems with seeds, fast discrete shipping to Michigan. Good customer service, used online chat. Excellent grow indoors, very strong smell in flower. Sweet smelling Solid buds. Strong cloner too, and with aero cloner and gel had roots in under 2 weeks. Friends all love the happy, feel-good buzz, and want more, even the heavy smokers with high tolerance are asking for more. One buddy says it helps his hip pain at night and is able to sleep. I found No purple colors on any of the plants which I thought would be cool to see but not a dealbreaker. Everyone loves it so much I’m going to run this one for a few more harvests. Bubbleponics with 600 hps, 4 plant Scrog in 4×4, 2-3 zips per plant in 8 week flower. Thumbs up!
Rated 1 out of 5

Elizabeth Olson – April 15, 2021

I purchased these seeds and not 1 popped. I’ve purchased any times from Crop Kings and have never ever had an issue up until now. I’m not sure what the deal is. I was looking forward to trying this strain…
Rated 5 out of 5

Jesse – March 10, 2021

This was my first grow, bought these seeds and all 5 sprouted. Light was too far away and they all stretched, and I had to prop them up. Put them in hydroponic system for 2 months and they wouldn’t even grow roots, most other plants in the system for root rot, leaf problems, and died. after trying everything realized my ph tester was not working and the ph was at 1.5!!! Corrected issue and the plants shot to life filled the bucket with beautiful roots and growing like crazy. How these plants held on for two months enduring without a single plant dying is beyond me. Definitely buying again!
Rated 4 out of 5

JESSE PADDOCK – January 9, 2021

These seeds had a 100% seed rate but compared to the other strains this one seems to be slow growing, stunted a bit and more delicate to its environment. all other strains are growing like crazy and this one requires all my attention. Grand daddy Purple is one of my favorite strains though so will be worth the extra effort!!
Rated 5 out of 5

martin – December 2, 2020

gdp. strain grew great@ 75* 65 humidity. frosty fat buds.
was a Cem run.
Rated 5 out of 5

chris arutunoff – November 28, 2020

i’ve always heard that indica’s grow short. well, my GDP grew 13′ and was topped once. Hindu Kush 11′ and topped once. actually, it didn’t seem to matter what variety i grew they all got at least 10′ and didn’t have hardly any pests or disease growing here in eastern oklahoma. also, i’ve read that alot of folks are afraid to take leaves off the plant in mass. been doing that for 50 yrs and it makes my plants grow more vigorous. all of the leaves taken grow back very quickly!
Rated 4 out of 5

Chris Brooks – October 12, 2020

My GDP is looking fantastic at approximately 6 weeks in!