Arjan's Ultra Haze vs Arjan's Ultra Haze 2: Which Feminized Sativa Fits Your Grow?
1. Introduction
Arjan's Ultra Haze and Arjan's Ultra Haze 2 are closely related sativa strains from Greenhouse Seed Co, both offered as feminized seeds and both bred from Neville's Haze crossed with Southeast Asian genetics. They share a long flowering time and strong THC potential, but differ slightly in their genetic make-up, which can influence how they grow and how their effects are perceived.
If you are a first-time grower, looking for strong effects, or comparing strains before placing an order, understanding the distinctions between these two will help you choose more confidently. This comparison focuses on general differences, beginner suitability, yield considerations, and how their effects may differ in a broad sense.
2. Quick Comparison Table
| Feature | Arjan's Ultra Haze | Arjan's Ultra Haze 2 |
|---|---|---|
| Breeder | Greenhouse Seed Co | Greenhouse Seed Co |
| Seed Type | Feminized | Feminized |
| Type | Sativa | Sativa |
| Genetics | Neville's Haze × Cambodian × Lao | Neville's Haze × Mango Haze × Laos |
| Flowering Time | 12 weeks | 12 weeks |
| THC | Strong | Strong |
| Yield | Not specified | Not specified |
3. Arjan's Ultra Haze Overview
Arjan's Ultra Haze is a feminized sativa from Greenhouse Seed Co that combines Neville's Haze with Cambodian and Lao genetics. This blend of classic Haze and Southeast Asian landrace influences places it firmly in the long-flowering, high-THC sativa category.
With a flowering time of around 12 weeks, Arjan's Ultra Haze is better suited to growers who can commit to a longer cultivation cycle. The “strong” THC indication suggests it is aimed at users seeking pronounced effects rather than something mild. However, specific details about its exact THC percentage, yield levels, or flavour profile are not provided, so buyers should view it primarily as a long, potent Haze-style sativa rather than a quick-finishing or beginner-oriented option.
As a feminized seed line, it is designed to produce female plants, which removes the need to identify and remove males. This is a practical advantage for new growers, as it simplifies the process of getting from seed to harvest. Still, the long flowering time and typical sativa growth behaviour are factors that beginners must be ready to handle.
4. Arjan's Ultra Haze 2 Overview
Arjan's Ultra Haze 2 is also a feminized sativa from Greenhouse Seed Co, but its genetic composition is slightly different. Here, Neville's Haze is crossed with Mango Haze and Laos genetics, introducing a Mango Haze influence instead of the broader Cambodian input found in the original Ultra Haze.
Like its counterpart, Arjan's Ultra Haze 2 has a stated flowering time of approximately 12 weeks. It is likewise described as having strong THC potential, so it is not positioned as a low-potency option. The breeder has not listed specific yield figures, flavour descriptions, or detailed effect breakdowns in the data provided, so comparisons between the two strains must focus mainly on their genetic differences and shared long-flowering, high-THC sativa character.
Being feminized, Arjan's Ultra Haze 2 is also aimed at growers who want to avoid dealing with male plants. Its combination of Neville’s Haze and Mango Haze suggests a slightly different expression of the Haze family, while still occupying the same general niche: a strong, long-running sativa for growers who value effect intensity over speed.
5. Key Differences
General Comparison
At a glance, these two strains are very similar. Both are:
- Feminized
- Sativa-dominant
- Developed by Greenhouse Seed Co
- Built on a Neville’s Haze base
- Listed with a 12-week flowering time and strong THC
The main distinction lies in the supporting genetics:
- Arjan's Ultra Haze: Neville's Haze × Cambodian × Lao
- Arjan's Ultra Haze 2: Neville's Haze × Mango Haze × Laos
The original Ultra Haze brings in Cambodian and Lao components, pairing Neville's Haze with broader Southeast Asian influences. Arjan's Ultra Haze 2 replaces the Cambodian side with Mango Haze, another Haze-leaning line. This tweak in parentage can lead to differences in the overall character of the effects and possibly the way plants structure and express, even though they share the same stated flowering time and THC strength.
Which Is Better for Beginners?
For a first-time grower, the biggest consideration is not the small genetic variation, but the shared characteristics: both strains are long-flowering, strong sativas. A 12-week flowering period is significantly longer than many indica or hybrid options, and sativas can be more demanding in terms of height control, feeding, and patience.
Because both:
- Flower for roughly the same length of time
- Are described as “strong” for THC
- Come from similar Haze-based backgrounds
neither stands out as clearly “easier” for a complete beginner. In both cases, a new grower should be prepared to:
- Allow enough vertical space for a potentially tall sativa
- Wait through a full 12-week flowering phase
- Pay attention to plant training and environmental control
If you are entirely new to cultivation and want the smoothest possible learning curve, these two may both feel relatively advanced compared with faster, more compact strains. However, if you are committed to growing a strong sativa from the outset, you can choose either one and focus more on learning basic grow-room management than on minor differences in genetics.
Yield Comparison
Neither Arjan's Ultra Haze nor Arjan's Ultra Haze 2 comes with specific yield data in the information provided. Without those figures, it is not possible to say which one will reliably produce more per plant or per square metre.
In general, long-flowering sativas have the potential to be productive when grown well, but actual yield is highly dependent on:
- Grow environment (indoors vs outdoors, lighting quality, climate)
- Grower skill and experience
- Plant training methods and nutrition
Because both strains share the same indicated flowering time and strong sativa background, yield expectations should be viewed as broadly similar unless you have access to detailed grow reports or breeder notes beyond what is listed here. If yield is your top priority, you may want to research grow diaries for each name specifically, rather than assuming one is higher-yielding based solely on its name or slight genetic tweak.
Effects Comparison
The available data lists “strong” THC for both Arjan's Ultra Haze and Arjan's Ultra Haze 2, but does not provide detailed descriptions of their effects. This suggests both are aimed at users who prefer powerful, Haze-style experiences rather than subtle or low-intensity options.
Any effects comparison therefore needs to stay general:
- Both strains can be expected to deliver robust, sativa-leaning effects due to their genetics and strong THC indication.
- The difference between Cambodian + Lao versus Mango Haze + Laos genetics may translate into a different nuance in the overall feel, but specific descriptors cannot be confirmed from the data provided.
For users who simply want a strong sativa effect without focusing on fine distinctions, either strain should be suitable. Those who are particular about the character of the high may want to read independent user reviews or grow reports that discuss subjective experiences with each strain, as that information is not included in the product data here.
6. Which Should You Choose?
When choosing between these two, your decision will likely come down to how you weigh a few key points:
- Experience level: If you are a complete beginner, both strains present similar challenges: long flowering time, strong THC, and typical sativa traits. Neither has a clear advantage in ease of cultivation based on the provided information.
- Desire for strong effects: Both are described as having strong THC, so each is suitable if your main goal is potency rather than mildness.
- Interest in specific genetics: If you are intrigued by Cambodian influences, Arjan's Ultra Haze may appeal more. If you are a fan of Mango Haze lines, Arjan's Ultra Haze 2 could be the more interesting choice.
- Yield expectations: With no yield data available for either, it is safer to treat them as comparable in output and base your choice on genetics and user reviews rather than assumed production differences.
For a first-time grower determined to run one of these strains, choosing between them is less about difficulty and more about which lineage you find more appealing or which has better third-party feedback in terms of plant behaviour in your preferred setup.
7. Final Thoughts
Arjan's Ultra Haze and Arjan's Ultra Haze 2 occupy the same niche: feminized, Haze-based sativas from Greenhouse Seed Co with strong THC and a 12-week flowering time. Their main point of separation is the supporting genetics—Cambodian and Lao in the original versus Mango Haze and Laos in the sequel—rather than any big difference in speed, strength, or how suitable they are for beginners.
If you value nuanced genetic backgrounds and like the idea of Cambodian influences, lean towards Arjan's Ultra Haze. If you prefer strains related to Mango Haze, Arjan's Ultra Haze 2 makes more sense. In both cases, be prepared for a long flowering period, strong effects, and a grow best suited to someone ready to invest time and attention into a sativa project rather than a quick, easy harvest.
