Arjan Ultra Haze 2 (Mango Haze) Seeds · Green House · Uplifting Sativa

Arjan Ultra Haze 2 (Mango Haze) by Green House Seeds is a legendary 80% Sativa hybrid designed to deliver mind-blowing yields and an intensely uplifting, social high. This award-winning strain combines Neville’s Haze, Mango Haze, and Laos genetics to guarantee a premium, long-lasting psychoactive experience with an unforgettable fruity and woody terpene profile.

Many growers struggle to find a pure Sativa experience that actually justifies the long flowering time, often ending up with fluffy, lightweight buds and a high that fizzles out way too fast.

There is nothing more frustrating than dedicating over three months of your life to a grow cycle, battling wild vertical stretching, only to harvest a mediocre stash that barely gets you and your friends off the couch. Wasting time, nutrients, and energy on unstable genetics is a total buzzkill.

Arjan Ultra Haze 2 steps in to completely flip the script. By bringing together elite Haze and Laos landrace genetics, this strain offers a highly manageable structure for training and rewards your patience with up to 800 g/m² (2.62 oz/ft²) of dense, resin-soaked flowers that provide a soaring, energetic trip.

Why Arjan Ultra Haze 2 elevates your Sativa game

If you are used to finicky Sativas that yield poorly, this Green House classic will blow your mind. Instead of airy, unmanageable colas, you get long, heavy branches that respond beautifully to Low Stress Training (LST). This means you can maximize your light footprint and turn a tall plant into a horizontal canopy of massive buds.

The high is another major upgrade. While average Sativas give you a quick head rush, this 16.22% THC powerhouse delivers a sustained, highly psychoactive, and social buzz. It is the perfect smoke for chilling with friends, sparking creativity, or just enjoying a vibrant, energetic day without the heavy burnout.

Key features you’ll notice from the very first grow

• Elite 80% Sativa genetics: Because it crosses Neville’s Haze, Mango Haze, and Laos, you get extreme hybrid vigor, which means a massive, resilient plant that fills your grow space effortlessly.
• Exceptional yield potential: Thanks to its heavy flower production, you can harvest up to 800 g/m² (2.62 oz/ft²) indoors, meaning your stash jars will stay full for months.
• Uplifting, social effect: Because it boasts a unique cannabinoid profile (16.22% THC, 0.66% CBN), you experience a long-lasting, reanimating high, which means you can stay active, chatty, and creative all day.
• Fruity and woody terpene profile: Thanks to its rich Mango Haze heritage, you enjoy a sweet, tropical smoke with earthy undertones, meaning every puff is a delicious, smooth treat for your palate.
• Highly responsive to LST: Because it develops long, flexible branches, you can easily train the canopy, which means you control the height and maximize light penetration for fatter buds.

Technical specifications

• Breeder: Green House Seeds
• Type: Feminized photoperiod
• Dominance: 80% Sativa / 20% Indica
• Genetics: Neville’s Haze x Mango Haze x Laos
• Flowering time (Indoor): 12–13 weeks
• Harvest (Outdoor): Last week of October (Northern Hemisphere)
• Yield (Indoor): Up to 800 g/m² (2.62 oz/ft²)
• Yield (Outdoor): Up to 1 kg (2.20 lb) per plant
• Height (Indoor): Approx. 1.20–1.50 m (3.94–4.92 ft) with training
• Height (Outdoor): Approx. 2.00–2.50 m (6.56–8.20 ft)
• THC: 16.22% | CBD: 0.16% | CBN: 0.66%
• Flavor: Fruity, mango, sweet wood
• Effect: Highly psychoactive, strong, long-lasting, social

How to grow Arjan Ultra Haze 2

Preparation & Start
Start strong with a well-aerated substrate to support this vigorous Sativa right from germination.

• Keep seedling temperatures around 22–25 °C.
• Maintain high humidity (60–70%) during the first two weeks.
• Use a light soil mix to encourage rapid root expansion.
• Check out Green House for more legendary genetics.

Vegetative Stage
Control the stretch early; this plant loves to grow tall and wide.

• Apply Low Stress Training (LST) to manage vertical growth.
• Keep the light cycle at 18/6 for optimal development.
• Maintain a moderate EC; Sativas are sensitive to heavy feeding.
• Add Pro Silicate Grotek to strengthen those long, heavy branches.

Flowering Phase
Patience is key during this 12–13 week cycle; keep the environment dialed in.

• Switch lights to 12/12 and prepare for a significant stretch.
• Drop humidity to 40–50% to prevent mold in dense colas.
• Support branches as buds pack on serious weight.
• Use BAC Frooting Power in late bloom for explosive density.

Harvest & Curing
Wait for the right trichome maturity to lock in that soaring, energetic high.

• Flush the substrate 10–14 days before chopping.
• Harvest when trichomes are mostly milky for maximum psychoactivity.
• Dry slowly at 18–22 °C and 50–60% RH.
• Cure for at least 3 weeks to enhance the fruity flavor.

Frequently Asked Questions

Is Arjan Ultra Haze 2 suitable for beginners?

It requires some patience and basic knowledge of plant training (like LST) due to its 12-13 week flowering time and vigorous Sativa stretch. However, its natural resilience makes it a rewarding challenge for intermediate growers.

How tall does this strain get outdoors?

If planted early in the season directly in the ground, it can easily reach 2.00–2.50 m (6.56–8.20 ft). Make sure you have plenty of vertical space and privacy.

What kind of high can I expect?

Expect a very strong, long-lasting cerebral high. It is highly psychoactive, uplifting, and perfect for social situations, creative work, or daytime adventures.

Personal Experience of Pevgrow’s CEO (Alan)

Whenever I want a stash that guarantees a good time with friends, Arjan Ultra Haze 2 is one of my top picks. I remember growing this beast a few years back; the stretch during the first weeks of flowering was insane! I had to get really hands-on with the LST to keep it away from the lights, but man, was it worth it. The yield was absolutely massive, easily hitting that 800 g/m² (2.62 oz/ft²) mark in my setup. The flavor is this incredible old-school mix of sweet mango and spicy wood that just coats your mouth. I always recommend this strain to growers who have the patience for a 13-week flower because the quality of the high—soaring, energetic, and completely clear-headed—is something you just can't get from quick-finishing hybrids.