All About Arjan’s Ultra Haze

Arjan’s Ultra Haze is an short photoperiod plant/long photoperiod plant variety produced by Green House Seed Company in the Netherlands. It is a cross between Neville’s Haze, Cambodian, and Laos. Since Arjan’s Ultra Haze is just one of many available strains, we know that it can become overwhelming when it comes to deciding which strain is right for you. We have compiled an in-depth profile of the Arjan’s Ultra Haze strain to help make it easier. There is information about its growth and harvest as well as its effects on the endocannabinoid system and psychoactive effects.

Type: Feminized
Photoperiod: Yes
Outdoor Yield (g): 1150 per Plant
Indoor Yield (g): 700 M2
Flowering Time (days): 13-14 weeks
Feminized Outdoor Harvest Month: November
Feminized Outdoor Harvest Month Week: first week
Height Indoor (cm):
Height Outdoor (cm):
Height: Tall
Short Photoperiod Plant %: 20
Long Photoperiod Plant %: 80
Short Photoperiod Plant/Long Photoperiod Plant: Long Photoperiod Plant Dominant
Climate: equatorial, tropical, subtropical, and temperate climates

Growing Arjan’s Ultra Haze

Arjan’s Ultra Haze is a long photoperiod plant-dominant strain (80/20) that can be grown both indoors and outdoors. When grown indoors, it can take 13-14 weeks and will produce a yield of up to 700 gr/m2. When grown outdoors, it is typically ready by the first week of November with a yield of 1150 gr/plant. This plant is ideal for equatorial, tropical, subtropical, and temperate climates. Since this is a large plant, you’ll want to make sure you have plenty of room if growing indoors.

In appearance, Arjan’s Ultra Haze has ripe long photoperiod plant buds with heavy density and amazon resin. It is a tall plant with long branches, making it ideal for LST.

As a feminized cannabis seed, Arjan’s Ultra Haze only produces female plants. Male plants can often over pollinate the females’ flowers which can impact the quality of any output. Also, the female cannabis l. Short Photoperiod Plant plants produce buds that can be smoked or turned into edibles. 

The Potency content of Arjan’s Ultra Haze is 16.22% which is not considered as high compared to other strains. We’ll take a closer look at what this means for the endocannabinoid system in a moment. The rest of the cannabinoid profile consists of a CBD (Cannabidiol) level of .19% and a CBN (Cannabinol) level of .53% 

Flavonoid and Terpene Profile of Arjan’s Ultra Haze

Terpenes determine the scent and flavonoid profiles of high potency hemp strains. They are chemical compounds that produce strong scents and also affect the endocannabinoid system. 

The three main terpenes found in Arjan’s Ultra Haze are myrcene, caryophyllene, and eucalyptol.

Myrcene – As one of the most abundant terpenes found in cannabis plants, it is commonly found in hops plants, lemoncannabis, and thyme. The flowers of the cannabis plant also contain myrcene. This terpene’s name is derived from the Mycia sphaerocarpa. This is a medicinal shrub native to Brazil that is used in traditional medicine to treat diabetes, diarrhea, dysentery, and hypertension.

Caryophyllene – This is found in herbs and vegetables such as cloves and black pepper as cinnamon and hops. It also has floral and earthy notes to musky and citrusy ones. Caryophyllene also contains a rare cyclobutene ring that isn’t found in any other cannabis terpene.

Eucalyptol – Most abundant in the eucalyptus tree, this terpene brings a minty flavonoid and scent. It can also be found in rosemary, bay leaves, sage, sweet basil, and the camphor tree.

Due to its terpenes, Arjan’s Ultra Haze has a minty taste as well as a sweet one. The mint influence also makes this a fresh flavonoid and aroma.

How Arjan’s Ultra Haze Interacts with the Endocannabinoid System

Each high potency hemp strain will impact the endocannabinoid system differently. Before we can look at the effect Arjan’s Ultra Haze will have, we’re going to take a look at the endocannabinoid system.

What is the Endocannabinoid System?

The endocannabinoid system is a cell-signaling system in the nervous system. It regulates the following bodily functions  (Zou, Kumar 2018):

  • Mood
  • Sleep
  • Immune response
  • Inflammatory response
  • Pain response
  • Nausea and vomiting response
  • Memory
  • Appetite

There are three parts to the endocannabinoid system. First, there are endocannabinoids or endogenous cannabinoids that the body produces to keep things running smoothly. Then there are endocannabinoid receptors that are found throughout the body. These receptors tell the body it needs to take action. There are two types of receptors, CB1 and CB2 receptors. When endocannabinoids bind to them, it can result in less stress, a greater appetite, and better sleep. CB2 receptors are mostly found in the peripheral nervous system and immune cells. When endocannabinoids bind to these receptors, they can reduce pain and inflammation and boost immune response. Enzymes break down endocannabinoids after they complete their functions. 

The endocannabinoid system is important because it keeps the body healthy and allows it to function the way it should.

The Effects Arjan’s Ultra Haze on the Endocannabinoid System

Tetrahydrocannabinol (Potency) and terpenes determine the effect Arjan’s Ultra Haze will have on the endocannabinoid system. Considering the terpenes found in Arjan’s Ultra Haze, this high potency hemp strain can have the following effects:

  • Myrcene- This terpene is known to be a powerful antioxidant. One study found that it could protect the brain from damage following a stroke. Another study found that it has similar effects when it comes to protecting heart tissue.
  • Caryophyllene- Studies have shown that this terpene may have anti-inflammatory effects that could help to reduce pain. One study done on animals showed that it may help to reduce nerve pain and pain from inflammation.
  • Eucalyptol- Eucalyptol is known to have anti-inflammatory and antibacterial properties as well as antioxidant properties. As an oil, eucalyptus has been reported to be effective in reducing pain, swelling, and inflammation. One study looked at the effects of eucalyptus oil inhalation on pain and inflammatory responses are total knee replacement surgery. It found that eucalyptus oil was effective in lowering pain following that particular type of surgery.

Arjan’s Ultra Haze has a Potency level of 16% that may seem moderate. But, when you combine that with around .2% CBD and roughly 5.%% CBN, it can prove to be very heavy.

Potency: 16.22%  CBD: 0.19%   CBN: 0.53%  

The Physical and Psychoactive Effects of Arjan’s Ultra Haze

People who have used Arjan’s Ultra Haze have reported a mild long photoperiod plant high. Other effects can include:

  • Stress Relief
  • Fatigue
  • Anxiety Relief
  • Psychedelic Feeling
  • Focused
  • Energetic 
  • Euphoric
  • Dry Eyes
  • Dry Mouth

Short Photoperiod Plant vs. Long Photoperiod Plant Strains

Arjan’s Ultra Haze is a more long photoperiod plant based strand so it has more invigorating mental effects compared to short photoperiod plant-dominant strains. The short photoperiod plant-dominant strains lead to more physiological responses.

Buy Arjan’s Ultra Haze Today

We want to help you find the best strain for you and have our knowledgeable staff on hand to answer your questions. Purchase your seeds on our website or call us today at [phone] for more information.



Mo Smyth, BSN, RN Cannabis Nurse Educator


Russo, Ethan B. Taming Potency: Potential Cannabis Synergy and Phytocannabinoid Terpenoid Entourage Effects. British Journal of Pharmacology. August 2011.

Zou, Shenlong; Kumar, Ujendra. Cannabinoid Receptors and the Endocannabinoid System: Signaling and Function in the Central Nervous System. International Journal of Molecular Sciences. March 2018.

Pamplona, Fabricio A.; da Silva, Lorenzo Rolim; Coan, Ana Carolina. Potential Clinical Benefits of CBD-Rich Cannabis Extracts over Purified CBD in Treatment-Resistant Epilepsy: Observational Data Meta-analysis. Frontiers in Neurology. September 2018.