THC
10.4–14.1%
Middle half of 5 lab tests · median 13.02%
CBD
0.2%
Middle half of 3 lab tests · median 0.18%
Genetics Split
Silver Jack unites Jack Herer and White Widow in a moderate 40/60 hybrid with citrus-leaning terpenes and THC up to 24%.
Lab-Tested Profile
Measured in 5 flower lab tests of samples sold as Silver Jack by Analytical360, 2013–2015. Bar = middle half of results, tick = median.
Terpenes by weight · total 3.8% median
Lab results reflect the samples submitted under this name; batches, growers and phenotypes vary.
Terpene Profile
Relative levels from lab and source data.
No effect, flavor or medical-use data specific to Silver Jack has been published yet, so we don't guess. For what hybrid strains usually do, see the effects guide.
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Terpene Fingerprint
Relative terpene levels from lab and source data
THC in this profile
14.1% THC
Growing Information
Flowering Time
8–9 weeks
Difficulty
moderate
Height (Indoor)
80-120cm
Yield (Indoor)
400-500 g/m²
About Silver Jack
Seedmakers Seeds paired Jack Herer with White Widow to produce Silver Jack, a hybrid running about 40 percent indica to 60 percent sativa. The plant sits in the moderate-difficulty bracket, flowers over 8 to 9 weeks, and stays compact at 80-120cm indoors while still managing 400-500 g/m² in yield. THC has topped out at 24 percent in testing, giving it real strength for a cross built from two well-known parent lines. Terpene-wise, limonene and caryophyllene lead, joined by linalool and myrcene, with smaller amounts of pinene, caryophyllene oxide, and terpinolene layered underneath, a profile that leans citrus and slightly spicy rather than sweet. Flavor descriptions and reported effects haven't been documented for this particular version, so what stands out most right now is the genetics and that terpene stack rather than any specific taste or high.
Where to Buy Seeds
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Frequently Asked Questions about Silver Jack
Is Silver Jack an Indica, Sativa, or Hybrid?
Silver Jack is classified as a hybrid cannabis strain bred from a genetic cross of Jack Herer × White Widow.
What cannabinoid content is reported for Silver Jack?
Silver Jack: 13% THC and 0.2% CBD reported in our data. The THC figure is a lab-test median. Potency can vary across harvests, phenotypes, and growing conditions.
What does Silver Jack taste and smell like?
Our data sources list terpenes such as Caryophyllene, Caryophyllene Oxide, Limonene for Silver Jack.
If You Like Silver Jack, Try...
Shared reported terpene or flavor notes; effects may differ
