Flowering Type

Photoperiod

Parental lines

Kosher Kush x The OG #18

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Photoperiod flowering time

8 to 10 weeks

Yield indoor

Very High Yield (above 600gr/m2)

Plant size

Information not available

Suitable climates

Hot, Cool, Dry

Got a question about this strain? Ask growers in the Seedsman Community.

Ask the Community ➜

From the breeder

A winning cross of 2 time Cannabis Cup Champion Kosher Kush and Multi Champion The OG#18

DNA Genetics breeder notes

Aroma

EarthyWoody

Effect description

Couch-lockUplifting

Parental lines

Kosher KushThe OG #18

Description

A winning cross of 2 time Cannabis Cup Champion Kosher Kush and Multi Champion The OG#18

This cross produces large resinous buds that reek of OG#18/Kosher goodness! The Holy Grail Kush is great for the beginner as well as the master grower. She makes an insanely aromatic plant with a strength and yield not to be matched. The Holy Grail Kush will demand the highest price of all the OG Kush Hybrids and the bag appeal is second to none. Several High Times staff were heard talking of how superior the Holy Grail Kush was in looks, smell, and taste. Please be aware of a very strong smell.

Characteristics

Brand/breeder

DNA Genetics

Parental lines

Kosher Kush x The OG #18

Type

Indica dominant

Flowering type

Photoperiod

Sex

Feminised

THC potential

High THC (16-24%)

CBD potential

Low CBD (0-1%)

Yield potential indoor

Very High Yield (above 600gr/m2)

Flowering time (photoperiod)

8 to 10 weeks

Suitable climate

Hot, Cool, Dry

Aroma

Earthy, Woody

SKU

DNA-HGRK-FEM

Grow guide

Photoperiod outdoor timeline

Photoperiod strains rely on seasonal daylight changes, so harvest timing is closely tied to your local climate.

Stage 1

Germination / Early Start

March – April

Wait for: frost risk easing, stronger spring light

Watch for: cold snaps, slow starts, excess moisture

Stage 2

Seedling / Transplant

April – May

Wait for: milder nights and settled weather

Watch for: transplant shock, wind exposure, pests

Stage 3

Vegetative Growth

June – July

Wait for: long days, regular feeding, healthy expansion

Watch for: overcrowding, nutrient issues, insect damage

Stage 4

Flowering

August – September

Wait for: shortening days, dry airflow, branch support

Watch for: mould, botrytis, high humidity, bad weather

Stage 5

Harvest

Late September – October

Wait for: ripe trichomes, dense finished flowers

Watch for: autumn rain, rot, early frosts

Indoor photoperiod timeline

Photoperiod strains give indoor growers more control over size, shape, and when flowering begins.

Week 0

Germination

Strong early establishment

Wait for: strong early establishment

Watch for: inconsistent starts, excess moisture

Week 1–2

Seedling

Stable structure and healthy growth

Wait for: stable structure and healthy growth

Watch for: stretch, early stress

Week 3–6+

Vegetative Growth

Desired plant size and canopy shape

Wait for: desired plant size and canopy shape

Watch for: overcrowding, uneven growth, training stress

7–12+ weeks

Flowering Phase

Strong flower formation and steady development

Wait for: strong flower formation and steady development

Watch for: humidity, airflow, support issues

Harvest

Harvest Window

Finished flowers and mature trichomes

Wait for: finished flowers and mature trichomes

Watch for: cutting too early or pushing too long

Reviews

Filter

We found matching review(s) Clear filters

Arthur Martinez 05.11.2024

buyer

Did soak for about 4 hours. Then planted in soil. Took about 3 days and she has germinated!! So far so good. Thank you seedsman!

As described: Yes

Jerrad S. 11.09.2021

buyer

I have germinated many seeds of many strains from seeds man. I have never had a problem before this. I'm bummed cuz this one of my favorites. my germ rate is like 90% So I wont complain too much, but these are pretty expensive. 3/3 didnt even pop or grow a tap root. very disappointed but I will not bad mouth seedsman. even when these didnt germ. I germed 5 other strains with no issue at the exact same time. so I chop it up as something that happens sometimes maybe it was jus abad pack. but u asked my opinion you got it

Orlee L. 11.08.2021

buyer

the seeds i paid for were awsome and all germinated the free ones you sent 2 strains not one germinated. quite disappointed as i liked the 2 free strains you sent but they didnt germinate. would like you to replace the free ones

Jeremy P. 02.06.2021

buyer

Seedsman gets an A+ on this one! Holy Grail by DNA genetics Amsterdam! My favorite cannabis on the planet!!!!

Dasawman 06.05.2021

buyer

Holy Grail Kush. Like many of us did come 420, we embarked on seed promotions. I have done alot of business with seedmans.. never have had a problem.. fast shipping I have always had a 100%germination rate.. Intil now.. I ordered DNA's Holy grail kush.. paper towel method. Is my preferred way to pop seeds.. well . These were dudes.. I'm disappointed..

Please note that some customers choose to leave a rating without writing a review, and because of this the number of ratings will differ from the number of reviews.

Holy Grail Kush Feminised Seeds

Flowering Type

Photoperiod

Parental lines

Kosher Kush x The OG #18

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Photoperiod flowering time

8 to 10 weeks

Yield indoor

Very High Yield (above 600gr/m2)

Suitable climates

Hot, Cool, Dry

Photoperiod outdoor timeline

Indoor photoperiod timeline

This week’s must-haves...

Holy Grail Kush Feminised Seeds