Cannabis is often associated with relaxation, calm, and rest. The image that comes to mind for a lot of people when thinking of the herb is a red-eyed person sunk deep into a couch with not a lot to say. Although there are certainly a vast variety of strains that will produce this deeply stoning effect, there are an equal amount that have the complete opposite outcome. Many cannabis strains are highly stimulating, energetic, cerebral, and induce a cognitive high that boosts creativity, focus, and concentration.

These cannabis strains are ideal before sitting down for long periods of work, writing, making music, and painting pictures. Many athletes and active individuals also use these strains before exercise and recreational activities to boost awareness, enter flow states, and possibly improve performance. Here are the top 5 strains to boost focus.


Lighting up a bowl or joint loaded with Sour Diesel is an excellent strategy before pouring your energy into a creative project. This sativa-dominant strain features 70% sativa genetics and 30% indica genetics. She is the product of a breeding project involving Original Diesel, Northern Light, Shiva, and Hawaiian. This diverse genetic mixture results in a strain that has a THC content of 19% alongside medium levels of CBD. The high from this strain is extremely clear, crisp, and physical. It allows the user to get into the zone without trailing into trippy thought patterns or losing focus. The flowers of this strain house sensory pleasures in the form of sour and herbaceous flavours.

Sour Diesel can be grown with great success both indoors and outdoors. Indoor plants are capable of producing yields of between 475–525g/m² and growing to heights of up to 160cm. Plants cultivated outdoors will provide harvests of up to 600g/plant, and can reach up to 200cm. Sour Diesel has a flowering time of approximately 10–11 weeks, with outdoor plants ready for harvest during late October.

Sour Diesel

Sour Diesel

Genetic background Original Diesel x (Northern Light x Shiva x Hawaiian)
Yield indoor 475 - 525 g/m2
Height indoor 90 - 160 cm
Flowering time 10 - 11 weeks
THC strength THC: 19% (aprox.) / CBD: Medium
Blend 70% Sativa, 30% Indica
Yield outdoor 550 - 600 g/per plant (dried)
Height outdoor 150 - 200 cm
Harvest time Late October
Effect Physical, clear high

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OG Kush is a classic strain within the world of cannabis, originally stemming for the cultivation mecca of Northern California. The lovechild of parent strains Chemdawg, Lemon Thai, and Pakistani Kush, OG Kush is an indica-dominant strain featuring 75% indica genetics and 25% sativa genetics. Although sativa-dominant strains are usually associated with focus and alertness, OG Kush still achieves a similar state, but with slightly higher levels of calm and relaxation. This high enables smokers to focus as stress and anxieties fade away, making room for creativity and flow of ideas. A THC content of 19% along with medium levels of CBD make for highs that set in fast and linger for some time. The flowers of OG Kush offer a blast of flavours to the taste buds in the form of citrus, pine, and fruity notes.

OG Kush pumps out respectable yields of up to 475g/m² when grown indoors within tents or grow rooms. Indoor plants maintain a discreet and easily manageable height of between 90–160cm. Plants cultivated outdoors within garden beds or pots produce yields of up to 550g/plant and peak at taller heights of 220cm. This strain features a flowering time of between 7–9 weeks, with outdoor plants ready to harvest in October.

OG Kush

OG Kush

Genetic background Chemdawg x Lemon Thai x Pakistani Kush
Yield indoor 425 - 475 gr/m2
Height indoor 90 - 160 cm
Flowering time 7 - 9 weeks
THC strength THC: 19% (aprox.) / CBD: Medium
Blend 25% Sativa, 75% Indica, 0% Ruderalis
Yield outdoor 500 - 550 g/per plant (dried)
Height outdoor 180 - 220 cm
Harvest time October
Effect Relaxing and full of flavour

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Green Crack Punch is a wonderfully balanced strain that features the best of both worlds. She stems from parent strains Green Crack and Purple Punch. Purple Punch is a potent indica-dominant strain that induces deep stoning relaxation, whereas Green Crack is extremely energetic, cerebral, and motivating. This interesting combination has formed a strain that drives focus and creativity whilst providing a subtle stoning feeling that eases tension and boosts patience. Green Crack Punch allows for hours of mental flow, ensuring work gets done to a high quality. These desirable effects are paired with potent scents and tastes of citrus, grapes, and blueberry. A THC content of 20% ensures a fast-acting high that will plunge the mind into a motivated and euphoric state.

Green Crack Punch has a preference for an indoor environment, where she will be able to put out yields of up to 500g/m² under ideal growing conditions. She can still be grown outdoors and provide good results, with harvest time occurring around September within favourable climates. She features a flowering time of between 55–60 days.

Green Crack Punch


Genetic background Green Crack x Purple Punch
Yield indoor 450 - 500 gr/m2
Height indoor 90 - 160 cm
Flowering time 8 - 9 weeks
THC strength THC: 18% (aprox.) / CBD: Low
Blend 60% Sativa, 40% Indica
Yield outdoor 550 - 600 g/per plant (dried)
Height outdoor 180 - 220 cm
Harvest time Late September
Effect Relaxed and Euphoric

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Lemon Shining Silver Haze supports focus and attention span with a wave of psychoactive potency. This strong strain isn’t really one for novice smokers as she provides a long-lasting high fuelled by THC levels of 21%. This sativa-dominant lady features 75% sativa genetics and 25% indica genetics, and is the result of crossbreeding Lemon Skunk and Shining Silver Haze. The highly stimulating effects of this strain will allow you to sit for long periods when it comes to reading and researching, and will provide a catalyst for ideas when working on creative projects. The high is augmented by flavours of citrus and sweetness.

Lemon Shining Silver Haze grows well indoors, and prefers a mild climate when grown outdoors. Indoor plants will provide yields of between 425–475g/m² and grow to varying heights of 80–140cm. Plants cultivated outside erupt to taller heights of between 130–170cm and churn out yields of 450–500g/plant.

Lemon Shining Silver Haze


Genetic background Lemon Skunk x Amnesia Haze
Yield indoor 425 - 475 gr/m2
Height indoor 80 - 140 cm
Flowering time 8 - 9 weeks
THC strength THC: 21% (aprox.) / CBD: Low
Blend 75% Sativa, 25% Indica, 0% Ruderalis
Yield outdoor 450 - 500 g/per plant (dried)
Height outdoor 130 - 170 cm
Harvest time Middle of October
Effect A combination of stoned + high

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Royal Jack Automatic is the regal child of parent strains Jack Herer and a ruderalis strain. With THC levels of 16%, she provides clear cerebral highs that aren’t too intoxicating, but ramp up focus and concentration to new heights. Medium levels of CBD also contribute a clear-headed effect. These sensations of motivation are enriched by scents and flavours of pepper, herbs, and spices. Such delicious flavours make her a great strain for crafting edibles.

Royal Jack Automatic can be grown well both indoors and outdoors. Indoors, this stealthy strain maintains discreet heights of only 40–80cm and can be easily grown within small spaces such as modified cupboards and boxes. Indoor plants put out 350–400g/m², very impressive for such a small variety. Outdoor plants achieve similar heights of 60–80cm and provide yields of 120g/plant. This rapid grower is ready to harvest only 9–10 weeks after germination has taken place.

Royal Jack Automatic

Royal Jack Automatic Royal Queen Seeds

Genetic background Jack Herer x Ruderalis
Yield indoor 350 - 400 g/m2
Height indoor 40 - 80 cm
Flowering time 6 - 7 weeks
THC strength THC: 16% (aprox.) / CBD: Low
Blend 40% Sativa, 30% Indica, 30% Ruderalis
Yield outdoor 70 - 120 g/per plant (dried)
Height outdoor 60 - 80 cm
Harvest time 9 - 10 weeks after planting
Effect A motivating and inspiring feeling

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