Arjan's Ultra Haze 2 vs Arjan's Ultra Haze: Which Feminized Haze Is Right for You?

1. Introduction

Arjan's Ultra Haze 2 and Arjan's Ultra Haze are two closely related sativa strains from Greenhouse Seed Co. Both are feminized, both are described as strong, and both are built around the legendary Neville's Haze. For a first-time grower or a buyer looking for pronounced effects, choosing between them can feel confusing because they share the same breeder, type, and flowering time.

This comparison looks at how their genetics differ, what that might mean for cultivation and effects, and which one is likely to suit beginners, yield-focused growers, and users seeking a powerful sativa experience.

2. Quick Comparison Table

Feature	Arjan's Ultra Haze 2	Arjan's Ultra Haze
Breeder	Greenhouse Seed Co	Greenhouse Seed Co
Seed Type	Feminized	Feminized
Type	Sativa	Sativa
Genetics	Neville's Haze × Mango Haze × Laos genetics	Neville's Haze × Cambodian × Lao
Flowering Time (indoors)	12 weeks	12 weeks
THC Description	Strong	Strong

3. Arjan's Ultra Haze 2 Overview

Arjan's Ultra Haze 2 is a feminized sativa developed by Greenhouse Seed Co. It builds on Neville's Haze by combining it with Mango Haze and additional Laos genetics. This layered background keeps the classic Haze character while adding influences from Mango Haze and Southeast Asian lines.

With a reported flowering time of around 12 weeks, Arjan's Ultra Haze 2 fits the profile of a long-flowering sativa. That timeframe often requires a bit more patience and planning compared with shorter-flowering varieties. For growers, this usually means:

• Committing to a longer indoor cycle or extended outdoor season
• Managing plant height and structure over a prolonged veg and bloom period
• Scheduling feed and environmental changes carefully as flowering progresses

The strain is described as strong in terms of THC. This places it more in the category for users who are specifically looking for pronounced, potent effects rather than something very mild. While detailed flavour, aroma, and effect notes are not specified, the combination of Haze and tropical genetics often appeals to those who enjoy classic sativa-style experiences and complex profiles.

Because Arjan's Ultra Haze 2 is feminized, growers can generally expect female plants, which simplifies planning for smaller spaces or limited plant counts. However, the long flowering time and sativa nature still mean it is better suited to growers who are prepared for a more involved cultivation cycle.

4. Arjan's Ultra Haze Overview

Arjan's Ultra Haze, also from Greenhouse Seed Co, is another feminized sativa centred around Neville's Haze. Here the breeder has combined Neville's Haze with Cambodian and Lao genetics, leaning more heavily into Southeast Asian influences.

Like its sibling, Arjan's Ultra Haze has a flowering time of about 12 weeks. Growers should plan for:

• A long indoor flowering period compared with fast-finishing strains
• Careful training or pruning if height needs to be controlled
• Consistent conditions across a lengthy bloom phase

This version is also described as strong in THC. That makes Arjan's Ultra Haze an option for those seeking distinct, powerful sativa effects rather than gentle or subtle sensations. Specific flavour and effect characteristics are not detailed, but the Cambodian and Lao elements suggest a focus on classic tropical sativa traits.

As a feminized seed line, Arjan's Ultra Haze is designed to simplify cultivation by minimising the need to identify and remove males. The main challenge for growers is again likely to be managing a tall, vigorous sativa over a 12-week flowering window.

5. Key Differences

General Comparison

On paper, Arjan's Ultra Haze 2 and Arjan's Ultra Haze look very similar: both are feminized, sativa-dominant strains from the same breeder, both built on Neville's Haze with strong THC and a 12-week flowering time. The real distinction lies in their supporting genetics:

• Arjan's Ultra Haze 2: Neville's Haze crossed with Mango Haze and Laos genetics
• Arjan's Ultra Haze: Neville's Haze crossed with Cambodian and Lao

This difference in parentage is likely to influence aspects such as growth pattern, nuances of aroma and flavour, and the subtleties within their effects. However, without precise data on those traits, they should be seen as two variations on a strong, long-flowering Haze theme rather than radically different categories.

Which Is Better for Beginners?

For a first-time grower or a beginner who wants easy cultivation, both strains pose similar challenges:

• They are sativas, which commonly grow taller and can be more demanding than many indica-leaning plants.
• They each require about 12 weeks of flowering, which is long compared with many beginner-friendly strains.
• Both are described as strong in THC, which may be intense for those new to potent sativas.

Because there is no specific information showing that one is more compact, faster, or significantly easier to manage, neither stands out as clearly more beginner-friendly. A novice who is determined to grow a Haze-style plant could pick either, but should be ready to:

• Learn basic training techniques to handle height
• Plan for extra time before harvest
• Start with a modest number of plants to keep things manageable

If you are completely new to growing and want the easiest possible start, you may want to consider that both of these are more advanced than short, fast-flowering strains. Between the two, there is no clear evidence-based reason to say one is definitively “easier” for beginners.

Yield Comparison

Specific yield data is not provided for either Arjan's Ultra Haze 2 or Arjan's Ultra Haze. That means we cannot state that one produces more per square metre or per plant than the other.

What can be said is that:

• Both take 12 weeks to flower, which often allows sativas time to develop substantial structures and potentially good yields when conditions are right.
• The final yield for both strains will depend heavily on grower skill, environment, pot size, nutrition, and training methods.

For a grower focused strongly on yield, the choice between these two should probably rest less on assumed production differences and more on practical factors you control, such as:

• Which plant you can better support in your space and climate
• Your ability to maintain stable conditions over a long flowering period
• How comfortable you are with training and pruning sativa plants

In short, there is no reliable data to suggest that either Arjan's Ultra Haze 2 or Arjan's Ultra Haze clearly outperforms the other in yield potential.

Effects Comparison

Both strains are marked as strong in THC, and both are sativa types. This points toward pronounced, potent effects rather than something mild. However, without detailed descriptions of the specific sensations or user experiences for each, it is not possible to say that one is more uplifting, more relaxing, or more “psychedelic” than the other in a precise way.

The main differentiator is their genetic composition:

• Arjan's Ultra Haze 2 includes Mango Haze along with Neville's Haze and Laos genetics.
• Arjan's Ultra Haze combines Neville's Haze with Cambodian and Lao influences.

These different backgrounds can shape subtleties in the effects profile, but in the absence of concrete data, both should be approached as strong, Haze-influenced sativas. For a user specifically looking for strong effects, either option fits that general brief, with the understanding that potency and subjective experience will vary by individual.

6. Which Should You Choose?

The decision between Arjan's Ultra Haze 2 and Arjan's Ultra Haze mostly comes down to how you feel about their slightly different genetic mixes and your tolerance for long-flowering sativas, rather than clear, measured differences in yield or ease.

• If you are a first-time grower: Be aware that both strains are long-flowering, strong sativas. Neither is clearly simpler, so your choice can be based on which genetic profile appeals more. Starting with just a couple of plants and focusing on learning the basics will matter more than which of the two you pick.
• If you want strong, sativa-style effects: Both are described as strong in THC, and both are built on Neville's Haze. You can choose Arjan's Ultra Haze 2 if you like the idea of Mango Haze contributing to the lineage, or opt for Arjan's Ultra Haze if you are drawn to Cambodian and Lao influences.
• If yield is your top priority: No specific yield figures are given, so base your choice on practical considerations: your space, equipment, and experience with tall sativas. Both have the potential to reward a well-run 12-week cycle; neither can be claimed as the higher yielder from the available data.
• If you want something clearly “easy” and fast: Neither strain fits that description. You may wish to look beyond these two for a shorter-flowering, more compact variety if convenience is more important than growing a Haze.

7. Final Thoughts

Arjan's Ultra Haze 2 and Arjan's Ultra Haze are two closely related, strong, feminized sativas from Greenhouse Seed Co, sharing a 12-week flowering time and a foundation in Neville's Haze. Their main distinction lies in the supporting genetics—Mango Haze and Laos versus Cambodian and Lao—rather than in any documented differences in yield, difficulty, or effect strength.

If you are willing to manage a long-flowering Haze and are specifically looking for a potent sativa experience, you can confidently choose either strain based on which lineage you find more appealing. For beginners or yield-focused growers, success with both will depend more on your growing environment and technique than on major differences between these two related varieties.