Big Devil FAST Version vs Killer Kush Fast Version: Which Feminized Strain Fits You Best?

1. Introduction

If you are choosing between Big Devil FAST Version and Killer Kush Fast Version, you are already looking in the right direction for fast-finishing, feminized cannabis seeds from Sweet Seeds. Both are hybrid strains bred for speed and reliability, but they differ in genetics, flavour profile, and how clearly their growing characteristics are defined.

This comparison focuses on what matters most to new and intermediate growers: ease of cultivation, yield potential, and the type of experience you can generally expect from each. While some data is not specified, you can still use the available information and a few general principles to decide which strain fits your priorities.

2. Quick Comparison Table

Feature	Big Devil FAST Version	Killer Kush Fast Version
Breeder	Sweet Seeds	Sweet Seeds
Seed Type	Feminized	Feminized
Type	Hybrid	Hybrid
Genetics	Big Devil Auto × secret strain	OG Kush × Auto Indica
Flowering Time	Not specified	Approx. 7 weeks
Yield	Not specified	Good
Flavour / Aroma	Not specified	Sweet, tangy citrus with hints of chemical, diesel, and kush
THC	Strong	Not specified

3. Big Devil FAST Version Overview

Big Devil FAST Version is a feminized hybrid from Sweet Seeds created by crossing Big Devil Auto with a secret strain. The result is a photoperiod, fast version line that aims to combine the rapid development often associated with autoflowering genetics and the flexibility of a standard light-dependent plant.

The only clear potency indicator provided is that Big Devil FAST Version has “strong” THC. That points to a pronounced effect profile, which may appeal to users explicitly seeking more intense effects. However, specific descriptions of the high (for example, whether it leans more uplifting or more relaxing) are not listed, so it is best viewed as a general strong hybrid rather than a precisely defined effect type.

Because this strain originates from Big Devil Auto, growers can reasonably expect it to be oriented toward a faster indoor cycle than many traditional photoperiod hybrids, but the exact flowering time and yield levels are not specified. For a first-time grower, this means you get a quick-finishing feminized option, but you will need to rely on general hybrid cultivation guidelines rather than precise numbers.

In terms of flavour and aroma, there is no detailed profile given. If taste and smell are your top decision factors, the lack of description here may make Killer Kush Fast Version more attractive, since that strain does have a clearly stated flavour profile.

Overall, Big Devil FAST Version suits growers and users who:

• Want a fast, feminized hybrid from Sweet Seeds with strong THC
• Are comfortable working without exact yield or flowering-time figures
• Prioritise potency and speed over detailed flavour information

4. Killer Kush Fast Version Overview

Killer Kush Fast Version is another Sweet Seeds feminized hybrid, but this one is firmly rooted in OG Kush genetics. It is made from crossing OG Kush with an Auto Indica, creating a line that keeps the Kush character while shortening the flowering period.

The flowering time is clearly specified at around 7 weeks, which is on the short side for a photoperiod hybrid. For new growers, having this concrete number makes planning much easier. You can schedule your switch to flowering, anticipate harvest, and coordinate your space usage with much more confidence than with a strain where timing is left vague.

Yield is described as “good,” suggesting it is designed to offer a solid return without being purely high-yield focused. While “good” is not a precise metric, it at least gives a sense that productivity has been a consideration in the breeding work, and that you are not choosing a low-output specialty strain.

Where Killer Kush Fast Version clearly stands out is in its flavour and aroma. It carries a sweet, tangy citrus taste with hints of chemical, diesel, and classic kush. This profile will likely appeal to fans of modern Kush varieties who enjoy a more complex and slightly pungent edge rather than purely fruity or sweet tones.

The THC level is not specified, so while the name might suggest a powerful effect, you should not rely on that alone; it is better to assume a typical hybrid potency unless otherwise stated. As with Big Devil FAST Version, no detailed effect breakdown is provided, so we cannot say with certainty whether it is more sedating or energising.

In summary, Killer Kush Fast Version will attract growers who:

• Want a fast-flowering hybrid with a clearly stated ~7 week bloom time
• Appreciate “good” yield potential in a compact schedule
• Value a distinctive kush-style flavour with citrus, diesel, and chemical notes

5. Key Differences

General Comparison

Both strains are feminized hybrids from Sweet Seeds and incorporate autoflowering genetics to speed up development. The main general difference lies in their lineage and what is concretely documented about them.

• Genetics: Big Devil FAST Version comes from Big Devil Auto and a secret strain, offering a more mysterious profile. Killer Kush Fast Version openly combines OG Kush with an Auto Indica, appealing to growers who specifically want Kush traits.
• Information detail: Killer Kush Fast Version has specific data on flowering time, yield, and flavour. Big Devil FAST Version is more sparsely documented, with only its strong THC and hybrid nature clearly highlighted.

Which Is Better for Beginners?

For a first-time grower, clarity and predictability are crucial. On that basis, Killer Kush Fast Version has an advantage:

• Its 7-week flowering time makes planning straightforward, reducing guesswork about when to harvest.
• The description of a “good” yield gives beginners some assurance that, with basic care, they can expect respectable productivity.
• Knowing the strain’s flavour and aroma in advance helps new growers choose something they are more likely to enjoy.

Big Devil FAST Version can still be suitable for beginners, especially those who want to explore a fast Sweet Seeds hybrid with strong THC. However, for someone on their very first grow, the lack of specific growing and yield data may make it slightly less beginner-friendly than Killer Kush Fast Version, simply because there is less guidance to follow.

Yield Comparison

Only Killer Kush Fast Version has a stated yield descriptor: “good.” This indicates it is bred to provide a reasonable harvest and may be a safer choice for growers whose main goal is volume within a fast cycle.

For Big Devil FAST Version, yield is not mentioned at all. That does not mean it is low-yielding; it simply means there is no clear reference point in the available data. If maximum, predictable output is a priority for you, the explicit mention of “good” yield supports choosing Killer Kush Fast Version over Big Devil FAST Version.

Effects Comparison

Neither strain has a detailed effect description, so any comparison here must remain general and avoid assumptions.

• Big Devil FAST Version: The only clear indication is that THC is “strong,” so you can reasonably expect a more intense hybrid experience compared with milder strains. However, whether that intensity is more physical, more mental, or balanced is not defined.
• Killer Kush Fast Version: No THC information is given, and effects are not described. The OG Kush background suggests a classic hybrid character, but since this is not explicitly confirmed, it should simply be treated as a standard hybrid with a kush-influenced flavour profile rather than a known effect type.

For users focused purely on strong effects and who want the available data to back that up, Big Devil FAST Version is the only one explicitly labelled as having strong THC. For users who prioritise a known flavour and fast, organised grows, Killer Kush Fast Version still competes strongly, even without a stated THC level.

6. Which Should You Choose?

Your choice between these two Sweet Seeds fast hybrids comes down to your main priority: predictable growing behaviour, flavour, or maximum reported potency.

• Choose Big Devil FAST Version if:
  • You want a Sweet Seeds fast hybrid with explicitly strong THC.
  • You are comfortable working without precise flowering-time or yield data.
  • You are more focused on potency and speed than on detailed terpene descriptions.
• Choose Killer Kush Fast Version if:
  • You are a first-time or cautious grower who needs a clear ~7-week flowering period.
  • You want a strain described as having a “good” yield, balancing productivity and speed.
  • You value flavour and prefer a kush-style profile with sweet, tangy citrus and diesel-kush notes.

For a beginner looking for easy cultivation and reliable returns, Killer Kush Fast Version typically makes more sense due to its defined flowering time and yield description. For a user primarily seeking strong effects and willing to accept less documented grow data, Big Devil FAST Version stands out because it is clearly labelled as strong in THC.

7. Final Thoughts

Big Devil FAST Version and Killer Kush Fast Version both deliver what many growers seek: feminized, fast-finishing hybrid seeds from a reputable breeder. Big Devil FAST Version leans toward those chasing strong THC and willing to experiment with less documented details, while Killer Kush Fast Version offers a more structured option with a clear timeline, “good” yield, and a defined kush-style flavour.

If you want a straightforward, planned grow with a known taste, Killer Kush Fast Version is likely the safer choice. If your main aim is a powerful hybrid and you are comfortable with a little more uncertainty in the grow, Big Devil FAST Version is worth serious consideration.