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Jack Flash


Jack Flash Strain

Jack Flash is a 60% Indica dominant strain that won the Dutch High Life Cup in 1998. Despite the fact that it is Indica dominant it is known and loved for its cerebral qualities associated with the Sativa content. Jack Flash is a creative and energizing strain that will blow depression out of the body. The downside to this kind of Sativa power is that it can result in psychedelic states if taken in excess. However, the wild high lasts for about 30 minutes becoming more balanced as the Indica effects kick in, and it then turns into a well-balanced high. At this time users can become social and creative as they have more focus. For this reason, Jack Flash is said to be a useful social and recreational strain. The effects of Jack Flash are relatively short-lived, lasting for around 90 minutes or so. Jack Flash is a product of Sensi Seeds and is a cross between Jack Herer, Super Skunk, and Haze. This hybrid gets its name from its lightning-fast onset which may prove useful to patients needing immediate symptom relief. While the high may not last exceptionally long, it hits immediately and it hits like a lightning bolt. Jack Flash is a high yielding plant that has an earthy flavor and an aroma of lemons. Jack Flash is known to be a very productive strain of marijuana if tasks need to be completed and is a funny strain. It tastes and smells very pleasant and will put everyone who ingests it into a positive frame of mind. The only downside is that the aftereffects of Jack Flash can be a little heavy. After the burst of cerebral energy comes a heavy head and a lethargic body. THC levels of Jack Flash are said to average around 20%.

Why do Patients Use Jack Flash?

For people who need potent and immediate pain relief, then Jack Flash is a perfect strain. It is also good for the treatment of insomnia, once the effects of the strain wear off (this takes 2 hours or less). It is also often recommended for those suffering from anxiety, stress, and depression. As a productive strain of marijuana, it can be useful for the treatment of ADHD and ADD, as it can calm people down and focus them on the task at hand. For people who need motivation in their day, Jack Flash is one of the best. Jack Flash can be found in medical dispensaries in California, Colorado, and Washington.

Medical Uses of Jack Flash

Minor Aches and Pains

Side-Effects of Jack Flash

Dry Mouth
Dry Eyes

Information about Jack Flash


60% Indica 40% Sativa


Jack Flash is a cross between Jack Herer x (Super Skunk and Haze)

Stoned Meter

Jack Flash has a rating of 8.6 on the stoned meter.

THC Level

THC levels of Jack Flash average around 20%.


Jack Flash is bred by Sensi Seeds.

Flowering Time

Jack Flash has a moderately long flowering time between 9-10 weeks.

Ideal Growing Method

Jack Flash was made for indoor growing, doing very well in a Sea of Green setup.

Plant Height

Jack Flash grows between 40-80 inches indoors.


Jack Flash generates a high yield, over 500 grams per square meter indoors. |

Growing Skills

Jack Flash is an easy strain to grow suitable for novice growers.

Potential Problems

Stalks need to be supported as they develop large buds.


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