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.

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Image #1 from AnonymousImage #2 from Anonymous
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Anonymous
Anonymous
Verified BuyerVerified Buyer
5/5

Fire strain the Phenos that I grew, didn’t have a whole lot of lemon, but there was a killer cookie dough funk really gassy with a hint of lemon

2 days ago
Sean Dickey
Sean Dickey
Reviewer
5/5

Nothing not to like here. Indica-doms don't always sit well with me, but this OSG is relaxing without being debilitating. Excellent painkiller for my arthritis, smooth smoke, easy to grow with good yields. Nice fuely aroma, and resinous.

Third time growing this batch, just one plant this time. All seeds from pack germinated, no duds. DWC with 27-gallon reservoirs housing 2 plants each. Greenleaf Nutrients Mega Crop, kelp, Bud Explosion, and cal-mag, with poor measuring. Ph checked but I rarely adjust except for initial feeding of seedlings, generic lights based on Samung LM301 LEDs with Meanwell drivers. Tent with adequate ventilation.
Pretty easy grow, no hassles or surprises. This strain stretches quite a bit longer veg times are rewarded with beefy plants. May require external support. I'm not the most knowledgeable grower with the most dialed-in methods, but I have a clue. Pulled 6oz from this one plant. I did get some mold or whatever in the center of a big cola in the last grow, which is a first for me, but no problems this time. Wish I hadn't neglected and lost my clones from this grow, will grow again.

2 days ago
Image #1 from Marco
1
Marco
Marco
Verified BuyerVerified Buyer
5/5

so far so good!

3 days ago
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