Green Poison FAST Version vs Black Muffin F1 Fast Version: Which Feminized Fast Strain Should You Grow?

1. Introduction

Green Poison FAST Version and Black Muffin F1 Fast Version are both feminized, fast-flowering cannabis seeds from Sweet Seeds. They appeal to growers who want to shorten the time from seed to harvest while keeping yield and potency in a good balance. If you are a first-time grower, comparing these two options side by side can help you decide where to start, especially if you care about ease of cultivation, strong effects, or overall productivity.

This comparison focuses on the most practical aspects: how they differ in general terms, which is more beginner-friendly, what to consider around yield, and how their effects may compare based on the information provided.

2. Quick Comparison Table

Feature	Green Poison FAST Version	Black Muffin F1 Fast Version
Breeder	Sweet Seeds	Sweet Seeds
Seed Type	Feminized	Feminized
Type	Hybrid	Indica
Genetics	Green Poison crossed with Green Poison Auto	Not specified
Flowering Time	Fast version (exact time not specified)	Approx. 7 weeks
THC	Not specified	Strong (about 17–25%)
Ideal For	Growers wanting a fast hybrid with Green Poison lineage	Growers seeking a strong indica with fast flowering

3. Green Poison FAST Version Overview

Green Poison FAST Version is a fast-flowering feminized hybrid from Sweet Seeds. It is created by crossing the original Green Poison with Green Poison Auto, resulting in a photoperiod strain that keeps the core traits of the original while finishing more quickly than standard versions.

As a hybrid, Green Poison FAST Version is designed to balance indica and sativa influences. While specific details like THC level, exact flowering time, yield, and flavor are not provided here, its genetic background suggests it aims to combine the punch and structure of the original Green Poison with reduced flowering times borrowed from the autoflowering line.

Because it is a “FAST Version,” it is intended to shorten the time in bloom compared with a regular photoperiod Green Poison, which can be attractive if you want to reduce the overall cultivation cycle, fit more runs into a season, or minimise the time your plants are exposed to risks outdoors.

With feminized seeds, you avoid dealing with male plants, which simplifies things for newer growers and those who want to make efficient use of limited space.

4. Black Muffin F1 Fast Version Overview

Black Muffin F1 Fast Version is another feminized fast-flowering strain from Sweet Seeds, but this one is classed as an indica. It has a clearly defined flowering time of around 7 weeks, making it a good option if you want a precise expectation of when your plants will be ready to harvest.

While its full genetic background is not listed, this F1 Fast Version is bred to keep the indica character while significantly reducing bloom time. Unlike Green Poison FAST Version, Black Muffin F1 Fast Version has a defined potency range: it is described as strong, with THC content in the region of 17–25%. This places it firmly in the stronger segment of the market, appealing to users who prioritise robust effects.

The indica classification suggests a growth pattern and effect profile typical of that type, though exact flavours, aromas, and specific effect descriptions are not given here. Like Green Poison FAST Version, it is also feminized, which simplifies the process for growers by largely removing the need to identify and cull males.

5. Key Differences

General Comparison

At a high level, the main structural differences are type and potency information. Green Poison FAST Version is a hybrid derived directly from Green Poison and its autoflowering counterpart. This makes it a good choice if you specifically like the Green Poison family or want a balanced hybrid orientation rather than a strictly indica focus.

Black Muffin F1 Fast Version is presented as an indica strain with a clearly strong THC range between 17% and 25%. For growers and consumers who want clearly indicated potency and a classic indica direction, this is the more defined option.

Both are fast-flowering and feminized, but only Black Muffin F1 Fast Version comes with a precise flowering time (about 7 weeks). Green Poison FAST Version is also a “fast” photoperiod strain; however, the exact number of weeks is not provided here.

Which Is Better for Beginners?

For a first-time grower, simplicity and predictability matter more than subtle differences in lineage. Both strains have beginner-friendly traits:

• Feminized seeds (both strains) reduce the risk of accidentally growing males, making planning easier for new growers.
• Fast flowering shortens the overall grow, which can help beginners by reducing the time they need to manage the crop.

Black Muffin F1 Fast Version has a clearly stated flowering time of 7 weeks. That kind of precise guidance can be useful if you are new and want a clear schedule for planning feeding, flushing, and harvest.

Green Poison FAST Version, as a hybrid, may appeal to beginners who want a more balanced experience but are not yet sure whether they prefer indica-dominant or more uplifting profiles. Its hybrid nature can potentially sit in a “middle ground,” which some new users appreciate.

If you value a well-defined timeline, Black Muffin F1 Fast Version edges ahead for beginners due to its stated 7-week flowering period. If you are more interested in trying a fast version of a known Green Poison lineage and do not mind a bit less precision in the calendar, Green Poison FAST Version is also a reasonable starting point.

Yield Comparison

Exact yield figures are not provided for either strain, so it is not possible to directly compare potential grams per square metre or per plant. However, we can consider yield in a more general way.

Fast-flowering feminized strains like these are typically bred to maintain respectable yields even with shorter bloom times. As both come from Sweet Seeds and both are designed as fast versions rather than compact autos, a grower focused on high yield can reasonably expect both to be oriented toward solid productivity within a shortened life cycle.

Because specific yield data is missing, your yield outcome will largely depend on:

• How long you keep plants in the vegetative phase
• Your growing environment (indoors vs outdoors, lighting, nutrients, and training)
• Your grow experience and ability to keep plants healthy throughout the cycle

If you are choosing purely on yield potential and need hard numbers, you may want to consult more detailed breeder information beyond what is given here. With the data available, neither strain can be claimed as definitively higher-yielding than the other.

Effects Comparison

The most concrete effects-related data belongs to Black Muffin F1 Fast Version. It is described as strong, with THC ranging from around 17% to 25%. This makes it especially interesting for users who are looking for a more intense experience and prioritise potency.

For Green Poison FAST Version, specific THC or effect descriptions are not provided. As a hybrid fast version of Green Poison, it is reasonable to assume it aims to carry over the character of the original Green Poison line, but without exact figures or descriptors here, it cannot be directly compared in terms of strength.

With the information on hand:

• Black Muffin F1 Fast Version is the clear choice if your main criterion is strong THC-driven effects.
• Green Poison FAST Version is more of an unknown in terms of numerical potency, but may suit those who are open to a hybrid experience without aiming specifically for maximum strength.

6. Which Should You Choose?

Your best choice between Green Poison FAST Version and Black Muffin F1 Fast Version depends on what matters most in your grow and your consumption preferences.

• For first-time growers:
  If you want a very clear schedule, Black Muffin F1 Fast Version, with its stated 7-week flowering time, can give you more confidence about when to harvest. The feminized, fast nature of both strains is beginner-friendly, so your choice may come down to whether you prefer a known indica orientation (Black Muffin) or a hybrid descended from Green Poison (Green Poison FAST Version).
• For users seeking strong effects:
  Black Muffin F1 Fast Version stands out because its THC range (17–25%) is explicitly high. If you are specifically after robust, strong effects and want the reassurance of clearly stated potency, this strain is the more targeted option.
• For growers focused on high yield:
  Since neither strain includes exact yield data here, you cannot base the decision purely on yield numbers. In practice, both are designed as fast photoperiod feminized strains from the same breeder, so yield differences are likely to come more from your grow style than the modest genetic differences between them. If high yield is your priority, choose the one that better fits your desired effect profile and then optimise your environment and training techniques.
• For those unsure about indica vs hybrid:
  If you know you enjoy indica-leaning strains, Black Muffin F1 Fast Version offers a clear direction. If you prefer something that might sit between typical indica and sativa characteristics due to its Green Poison hybrid origin, Green Poison FAST Version is the more natural match.

7. Final Thoughts

Both Green Poison FAST Version and Black Muffin F1 Fast Version are designed to shorten flowering time and simplify cultivation with feminized seeds. Green Poison FAST Version appeals to growers who like the Green Poison lineage and want a fast hybrid, even though specific THC and yield data are not listed. Black Muffin F1 Fast Version, on the other hand, provides clear guidance on flowering time and strength, making it easier to plan your grow and anticipate strong effects.

If you prioritise potency and a defined 7-week flowering period, Black Muffin F1 Fast Version is likely the better fit. If you are more interested in exploring a fast version of a Green Poison hybrid and do not need precise potency figures, Green Poison FAST Version remains a solid alternative. Either way, both strains offer a fast, feminized route into your next grow, whether you are a complete beginner or an experienced cultivator looking to optimise time and space.