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Mr Nice Guy Strain Review - Everything You Need to Know & More!

mr nice guy indica strain

Named after cannabis legend Howard Marks, this strain was unavailable until Sensi Seeds decided the world needed to have some Mr Nice Guy. Howard Marks’ story is absolutely incredible, and you can read a little more about it below. This strain is an indica-dominant hybrid, with a sweet smell, and a profound, mellow high. This strain came up second in the 2004 High Life Cup.

This strain is sometimes referred to as Purple Mr Nice Guy, G13 Hash Plant, amongst others. That is because of the strains it was bred from, and also because the purple coloring that can sometimes be found on its buds.

mr nice guy marijuana weed

Mr. Nice Guy out to hang for the afternoon! Photo: @insight_ovd_insane

Mr Nice strain is an indica-dominant hybrid 

This strain is claimed by Sensi Seeds, as they were the seedbank that brought this strain back into existence. However, who the original creator was is hard to say. It’s named after Howard Marks, who spent years in federal prison after finally being tracked down by the federal police for international cannabis smuggling. It was re-released by Sensi Seeds to the general public in 1999 and has been an exceptionally popular strain ever since. With strong hashish flavors (a personal favorite of Mr Nice himself) this strain also has hash-like effects.

Mr Nice Guy Movie & Book

Mr Nice’s story was first turned into a book by the legend himself, Howard Marks. If you’re looking for a new book to read about marijuana, and want to hear how from 1975 to 1978 Howard Marks managed to smuggle 55,000 pounds of marijuana and hashish through JFK airport, then look no further. The book is amazing, and the film is top-notch as well. Rhys Ifans does an incredible job of playing Howard Marks.

Mr Nice Guy genetics

Mr Nice is a cross between two exceptional strains, resulting in one body indica strain. It was originally called G13 x HP; this becomes obvious when you look at the two strains it was bred from:

  • G13
  • Hash Plant

The main reason for the choices here is that G13 is thought to be a strain originally created by the CIA, FBI, and other agencies, who came together to breed some of the best strains from around the world. This would fit nicely with the Mr Nice story. Also, Hash was a favorite of Howard Marks, who originally started smoking cannabis at Oxford University whilst studying physics. He quickly became one of the largest hashish exporters in the world.

Mr Nice Guy THC percentage 

The average indica-dominant hybrid has about 12.5% THC content. The average Mr Nice Guy has about 14%, but THC percentages can go all the way up to 20% depending on phenotype and growing method.

Mr Nice Guy price 

Mr Nice Guy’s seeds are available online. This normally drives the price down. As such, in coffeeshops in Amsterdam, you’re likely to only pay about $8-10 a gram. This is a similar price to what you’d expect to pay in North America, but in some dispensaries, it’s likely even cheaper than this.

Mr Nice Guy taste 

Mr Nice Guy has a fantastic flavor, which should be fully appreciated inside a flower vape:

  • Earthy
  • Tropical
  • Sweet


Mr Nice Guy oil, wax, shatter, edibles, etc.

You can make any marijuana strain you like into oil, wax, or shatter. It’s a difficult process and can be dangerous, so it’s often better to simply buy it. This is difficult outside of North America. Shatters and other concentrates aren't currently legal in Amsterdam or the Netherlands, and they’re not particularly popular in many places outside of North America. If you want to try some shatter and can’t make it yourself, a trip to the States or Canada might be necessary.

You can also make edibles out of any strain you like, and this is a much simpler process. Simply decarboxylate your weed before you cook it into fat or an oil and you’re good to go. You can also use your left-over bud from your flower vape to make edibles quickly and easily. Your already vaped bud is actually perfectly decarboxylated marijuana.

mr nice guy wax cannabisMr. Nice Guy makes some pretty nice wax, too. Photo: @inthestars99 


mr nice guy bud kushMr. Nice Guy bud strains, photo: @412420bob

Mr. Nice Guy General Effects
Mr. Nice Guy Medical Effects
Mr. Nice Guy Effects
Relaxed 100% Stress Relief 100%
Cottonmouth 100%
Uplifted 80% Pain Relief 60%
Dizziness 55%
Happy 75% Insomnia 45% Headache 25%
Euphoric 55% Headaches 40% Paranoia 20%
Sleepy 40%  Lack of Appetite 35%
Lethargic 5%

Mr Nice Guy is a fairly potent indica-dominant strain that will likely leave you feeling couch-locked and perhaps a little bit tired after smoking. As such, you shouldn’t smoke this strain if you’re looking for a burst of energy. However, if you’re looking for a strain that will help you sleep or help you manage some pain, Mr Nice Guy is a great friend.


Mr Nice Guy flowering time

This strain takes 9 to 10 weeks to flower, which is a pretty long flowering time.

Mr Nice Guy Growing tips

This strain is incredibly hard to grow. It needs a very experienced grower’s touch, as it requires a lot of attention. However, manicuring the plant is relatively simple. Growing outdoors is not recommended unless you’re in a very sunny climate. The plant is very compact and has basically limitless resinous glands.

Mr Nice Guy seeds

The seeds for Hash Plant, G13, and Mr Nice are available from Sensi Seeds.

Mr Nice Guy yield 

You can expect a high yield from this strain at about 3-6oz. per square foot.


mr nice howard marks weedMr. Nice himself, Howard Marks. Photo: @mrniceseedbank

What is the Mr Nice Guy marijuana strain?

Named after cannabis legend Howard Marks, this strong indica-dominant hybrid was bred from two legendary strains: Hash Plant and G13. It pulls together these two marvelous strains beautifully to create a very difficult to grow but incredibly rewarding strain. If you’re a first-time grower, you should probably steer clear. But if you know what you’re doing, then give Mr Nice Guy a try. You can expect strong indica effects that can help with sleeping and pain management. 

  • Indica-dominant, almost pure indica
  • Named after Howard Marks
  • Was almost lost, but Sensi Seeds brought this strain back in 1999
  • Mr Nice Guy crosses G13 x Hash Plant
  • Strong indica strain which makes it good as a sleep aid and for pain management


Have you met Mr. Nice before? Tell us what you thought in the comments below!  

Megan Medeiros Written by Megan Medeiros (BA)

Megan Medeiros has a bachelor’s degree in English and is currently working on a master’s in English at James Madison University. She's the owner and operator of Medeiros Writing, and has been working as a cannabis writer for the past three years, mostly following the legal climate of marijuana, especially in areas like California, Colorado, Oregon, Canada, and other legal areas.

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