What does S1 mean?

S1 seeds come from self-pollinating a single female plant. The female is induced to produce pollen (via silver thiosulfate, colloidal silver, or other reversal techniques), and that pollen is used to pollinate the same plant — or a clone of itself.

Because both 'parents' are genetically identical, the offspring is theoretically a near-copy of the original. In practice, recessive traits hidden in the heterozygous original surface in S1, so variability still exists — but much less than an F1 hybrid.

S1 is how clone-only mothers become accessible to the seed-buying public. Wedding Cake S1, GMO S1, Forum Cut S1 — all are attempts to bottle a famous cut into seed form.

Result quality depends heavily on how stable the mother was. Highly heterozygous mothers produce S1 packs with significant phenotype variation; more homozygous mothers produce tighter S1s.

Reading an S1 pack honestly

S1 is marketed as a seed-form clone — and the marketing is roughly half-true. The closer the original mother is to homozygous, the closer the S1 offspring will be to her. The further from homozygous, the more S1 will look like a hunt pack of her hidden recessives.