Arjans Haze vs Arjan's Ultra Haze 2: Which Feminized Sativa Fits Your Grow?
1. Introduction
Arjans Haze and Arjan's Ultra Haze 2 are both feminized sativa strains from Greenhouse Seed Co, designed for growers who want strong, long-flowering genetics. On paper they look similar, but there are meaningful differences in flowering time, genetic background and likely intensity of effects that can influence which one is better for a first grow, for stronger experiences, or for a yield-focused setup.
This comparison looks at both strains side by side so you can decide whether Arjans Haze or Arjan's Ultra Haze 2 aligns better with your goals as a grower or consumer.
2. Quick Comparison Table
| Feature | Arjans Haze | Arjan's Ultra Haze 2 |
|---|---|---|
| Breeder | Greenhouse Seed Co | Greenhouse Seed Co |
| Seed Type | Feminized | Feminized |
| Strain Type | Sativa | Sativa |
| Genetics | G13 x Haze | Neville's Haze x Mango Haze x Laos genetics |
| Flowering Time | 11 weeks | 12 weeks |
| THC Description | Very Strong | Strong |
3. Arjans Haze Overview
Arjans Haze is a feminized sativa created by crossing G13 with Haze. As a sativa from Greenhouse Seed Co, it is aimed at growers who want an intense, long-lasting experience and are willing to commit to a full sativa flowering schedule.
The breeder lists the flowering time at about 11 weeks, which is relatively long compared to many hybrids but typical for sativa-dominant plants. This means you should expect a more extended cultivation cycle from seed to harvest, with the main payoff usually coming in the later weeks of flowering.
The THC level is described as “Very Strong”, indicating that Arjans Haze is intended for users who are comfortable with potent effects. While no detailed effect breakdown is provided, this description suggests it may be more suitable for experienced consumers rather than those who are sensitive or new to high-THC sativas.
Because the yield and grow difficulty are not specified, it is safest to treat Arjans Haze as a strain that may require some patience and basic grow skills, particularly in managing a tall sativa structure and the longer bloom period.
4. Arjan's Ultra Haze 2 Overview
Arjan's Ultra Haze 2 is another feminized sativa from Greenhouse Seed Co, built from a more complex genetic mix: Neville's Haze crossed with Mango Haze and Laos genetics. This blend brings together classic haze lines and Southeast Asian influence, aiming at a refined, uplifting sativa profile.
The flowering time for Arjan's Ultra Haze 2 is listed at around 12 weeks. This places it firmly in the long-flowering category, even compared with Arjans Haze. Growers should be prepared for a full, extended bloom phase and plan their grow space and schedule accordingly.
The THC is described as “Strong”. This still points to a powerful strain, but it suggests a slightly less intense effect level compared with the “Very Strong” designation of Arjans Haze. This may be attractive for users who want a pronounced sativa experience but do not necessarily need the absolute highest intensity available from this breeder.
As with Arjans Haze, no specific yield or grow difficulty figures are provided, so growers should assume a typical long-flowering sativa profile: likely taller plants and a need for consistent care throughout the extended flowering time.
5. Key Differences
General Comparison
Both strains are feminized sativas from the same breeder, but they are built from different lineages and have slightly different profiles:
- Genetics: Arjans Haze combines G13 with Haze, suggesting a mix of classic haze character with the influence of G13. Arjan's Ultra Haze 2 is a more intricate cross of Neville's Haze, Mango Haze, and Laos genetics, leaning heavily into multi-haze and Southeast Asian heritage.
- Flowering Time: Arjans Haze is listed at about 11 weeks, while Arjan's Ultra Haze 2 runs a bit longer at about 12 weeks.
- THC Description: Arjans Haze is marked as “Very Strong”, whereas Arjan's Ultra Haze 2 is described as “Strong”. Both are potent, but Arjans Haze is positioned as the more intense option.
In practice, this means Arjans Haze may appeal more to users chasing maximum potency in a slightly shorter timeframe, while Arjan's Ultra Haze 2 offers a complex haze profile with a marginally longer flowering period and potentially more manageable intensity.
Which Is Better for Beginners?
Neither strain is specifically described as “easy to grow”, and both have long flowering times, which can challenge first-time growers. However, there are subtle reasons one might be more approachable than the other:
- Flowering Length: Arjans Haze finishes about a week earlier on paper (11 weeks vs. 12). For a beginner, shaving off even a week can reduce the risk period at the end of flowering and make scheduling slightly easier.
- Effect Strength: Arjan's Ultra Haze 2 is labeled “Strong” rather than “Very Strong”. For a new consumer or a grower who plans to sample their own harvest, this marginally lower intensity may feel more comfortable.
For a first-time grower who is primarily concerned about managing the plant, the shorter 11-week flowering of Arjans Haze can be an advantage. For a beginner more focused on a less overwhelming experience when consuming, Arjan's Ultra Haze 2’s “Strong” (instead of “Very Strong”) THC description may be preferable.
If you are an absolute beginner with no prior grow experience, you should be aware that long-flowering sativas in general demand more patience and consistency than many faster, indica-leaning varieties. Neither of these is a “quick and easy” option in that sense.
Yield Comparison
The breeder does not provide specific yield data for either Arjans Haze or Arjan's Ultra Haze 2 in the information given here. That means we cannot reliably say which one will produce more per plant or per square metre.
For a yield-focused grower comparing the two, the lack of exact figures means the decision should lean more on what you can control:
- Time in flower: Arjan's Ultra Haze 2 stays in bloom roughly a week longer. Growers sometimes use longer flowering periods to push plants for maximum output, but this also increases running costs and risk.
- Grow skill and setup: With sativas, training, light intensity, and nutrition management often have as much impact on yield as the specific variety.
Because no hard yield numbers are available, it is safest not to pick one over the other purely on assumed production. Instead, treat both as long-flowering sativas that can reward good conditions, and choose based on flowering time and desired effect strength.
Effects Comparison
Detailed effect descriptions are not provided for either strain; however, we do have two key pieces of information: both are sativas, and their THC levels are described differently.
- Arjans Haze: A sativa with “Very Strong” THC. This suggests a powerful, intense experience that may be better suited to users with some tolerance or those deliberately seeking the highest possible impact.
- Arjan's Ultra Haze 2: Also a sativa, but with “Strong” THC. While still potent, this description implies a slightly gentler ceiling, which might be more approachable for a wider range of users.
Without more specific notes on the type of high or flavour, the main difference we can rely on is intensity: Arjans Haze is positioned a step above Arjan's Ultra Haze 2 in terms of strength. If you are looking for the most powerful sativa option of the two, Arjans Haze is the one that most clearly aims at that niche.
6. Which Should You Choose?
Choosing between Arjans Haze and Arjan's Ultra Haze 2 comes down to your priorities as both a grower and a consumer.
- For first-time growers:
If you are set on a sativa from this breeder, Arjans Haze offers a slightly shorter flowering time, which helps limit the overall duration of the grow. However, its “Very Strong” THC description means the end product could be intense. Arjan's Ultra Haze 2 takes about a week longer but may be a bit less overwhelming for a first personal harvest due to its “Strong” THC label. If your main concern is managing grow time, Arjans Haze has a marginal edge; if you are more concerned about not overdoing it on potency, Arjan's Ultra Haze 2 is the safer choice. - For users seeking the strongest effects:
Arjans Haze is clearly positioned as the more powerful option, with “Very Strong” THC. If you have experience with potent strains and want a high-intensity sativa, this is the more suitable of the two. - For beginners looking for easier cultivation:
Neither of these is an ideal “easy” starter strain because of their long flowering times, but between the two, Arjans Haze finishes sooner, which simplifies scheduling and slightly reduces risk. Keep in mind, though, that you’ll still need to handle a full 11-week flowering phase. - For growers focused on high yield:
With no direct yield data, the decision should be based on how long you’re willing to keep plants in flower and how comfortable you are working with haze-dominant genetics. If you are ready for a longer run, Arjan's Ultra Haze 2’s extra week in bloom may allow more time to develop its full potential, but it also means higher time and resource investment. Since there are no numbers to confirm a difference, your grow environment and technique will matter more than the choice between these two.
7. Final Thoughts
Both Arjans Haze and Arjan's Ultra Haze 2 are long-flowering, feminized sativas from Greenhouse Seed Co, suited to growers who are patient and comfortable with potent plants. Arjans Haze offers slightly shorter flowering and a “Very Strong” THC profile, making it more attractive to experienced users and growers who want maximum intensity in a still-extended but somewhat shorter timeframe. Arjan's Ultra Haze 2 stretches the flowering period by about a week and is described as “Strong” rather than “Very Strong,” which can appeal to those who want a powerful yet somewhat more manageable sativa experience.
If you value the shortest possible flowering cycle and the strongest potential effects, Arjans Haze is the better fit. If you do not mind an extra week in flower and prefer a high that is still potent but not pushed to the extreme, Arjan's Ultra Haze 2 is likely the more balanced choice.
