Genetics
HomeStrains › Klementine S1
Sativa dominant retail shopping label — not genetics

Klementine S1 Strain

Klementine S1 is a sativa dominant strain (Klementine). 63-day flowering.

Median THC
Flowering
63 days
Breeder releases
1
Avg rating

Indica / Sativa — retail shopping guide

Indica 30%Sativa 70%

Indica, sativa and hybrid are a retail shopping convention — not a reliable guide to genetics or effects. When researchers analysed 89,923 commercial samples across six states, these labels did not predict a plant’s terpene or cannabinoid profile, and a genome-wide study found sativa- and indica-labelled plants to be genetically indistinct (PLOS ONE 2022; Nature Plants 2021). The labels are so fluid that AK-47, a hybrid, won “Best Sativa” at the 1999 Cannabis Cup and “Best Indica” four years later. For an accurate, genetics-true picture, see the chemotype above.

Genetics & Lineage

Parents
This strainKlementine S1

Breeder releases (1)

BreederTHCFloweringSeedsRating
R-KIEM Seeds63dfeminized

About Klementine S1

Klementine S1 is a standout strain in the catalog of R-Kiem Seeds, defined by its explosive citrus profile, abundant resin production, and an active, long-lasting effect that places it among the most complete genetics in the lineup. Developed as an S1 from an elite-selected clone, it delivers a level of uniformity and stability that is rarely found in standard seed versions. Genetics and origin: the best of both worldsKlementine S1 is the self-pollination (S1) of an elite clone derived from the original cross Tangerine Sunrise × Gupta Kush, developed by R-Kiem Seeds. Tangerine Sunrise brings a refined citrus-forward foundation, while Gupta Kush—descending from Ghost OG—adds aromatic depth, body to the effect, and a subtle indica influence that balances the profile. The result is a sativa-dominant variety with up to 25% THC, powerful, expressive, and highly distinctive. Cultivation: sativa vigor and premium yieldsIndoors, Klementine S1 finishes flowering in 58–65 days (8–9 weeks) and can reach up to 650 g/m² under optimal conditions. It grows with vigorous, open branching typical of sativa structures and shows a pronounced stretch early in flowering, making training techniques like

Frequently asked questions

What are the genetics of Klementine S1?
Klementine S1 comes from Klementine.
Is Klementine S1 indica or sativa?
Klementine S1 is classified as sativa dominant.
How long does Klementine S1 take to flower?
Klementine S1 flowers in about 63 days.
Is Klementine S1 available as feminized or autoflowering seeds?
Klementine S1 is offered as: feminized.