Super Jack Marijuana Strain UK also known as “Super Jack Herer” and “Super Silver Jack,” is a sativa marijuana strain. Super Jack mixes Super Silver Haze with the illustrious Jack Herer to create a sweet, spiced blend with a rich buttery aroma. The potent effects spark creativity and provide an uplifting boost of energy. Super Jack is a great daytime strain that will calm any anxieties and propel you through your day.