S1 Cannabis Seeds

S1 feminized cannabis seeds are an excellent choice for breeders, cultivators, and collectors alike. These seeds allow growers to preserve rare, clone-only strains and discover new phenotypes of their favorite cultivars.

The term “S1” means “first selfed generation.” Selfing is the process of crossing a plant to itself to make feminized seeds. This can be accomplished by using an ethylene-blocking spray such as colloidal silver to cause the mother plant to form pollen sacs. The pollen is then used to pollinate either the original mother plant or a clone of it.

When done correctly, selfing produces 100 percent feminized cannabis seeds with the same genotype as the mother plant. This allows growers to discover plants that are nearly identical to the original clone. It also serves to open the gene pool, producing rare phenotypes with recessive traits. When growing S1 seeds, you may even find some phenotypes that are better than the original mother.

For breeders, selfing is a quick, easy, and effective way to stabilize a strain. Rather than selectively breeding males and females for many generations, they can create a homozygous strain in just a few generations of selfing.

At Greenpoint Seeds, we offer a variety of S1 cannabis seeds bred from elite, clone-only cultivars such as Animal Cookies, Purple Punch, and Gorilla Glue #4. Shop our feminized S1 seeds today.

SHIPS MARCH 17TH
SHIPS MARCH 17TH
New
$25.00$120.00

Customer Reviews

Rich says:

5

Quick delivery

2025-02-11 14:48:57 February 11, 2025

Joseph Natale says:

4

All seeds popped fast and grew vigorously from every pack of beans i bought. I was lucky enough to grab some ground zero for 25$ on reverse auction. Got em In tent now. Cant wait

2025-02-08 16:03:50 February 08, 2025

Matthew Mcconico says:

5

Gu is a hard worker. Good for biz

2025-02-07 02:31:04 February 07, 2025

Anonymous says:

5

Always spot on

2025-02-06 17:11:16 February 06, 2025

Robert says:

5

Super fast delivery

2025-02-04 22:38:23 February 04, 2025

Anonymous says:

5

The website is great as always, customer service above reproach and delivery is always fast.

2025-02-01 00:20:18 February 01, 2025

Anonymous says:

5

Good service.

2025-01-31 14:38:02 January 31, 2025

Leonard G. says:

5

Loving these strains fire🤪

2025-01-31 12:59:02 January 31, 2025

B G. says:

5

Will always recommend Greenpoint

2025-01-31 09:51:46 January 31, 2025

Leonard G. says:

4

Slow grower all germinated for the price not bad if your a decent grower good luck gromies

2025-01-29 15:54:18 January 29, 2025

Anonymous says:

5

Fruity foot🔥

2025-01-29 06:54:29 January 29, 2025

Chad Vilaubi says:

5

Great delivery and product everytime

2025-01-26 20:05:06 January 26, 2025

Harry F. says:

5

Best ever

2025-01-25 14:51:28 January 25, 2025

Jakob S. says:

5

Have had nothing but great experience with GPS! Worth giving a try for sure

2025-01-24 07:22:54 January 24, 2025

chris m. says:

5

Super fast shipping as always.

2025-01-23 00:48:51 January 23, 2025