Fast-flowering cannabis strains let you harvest in just 6–8 weeks, saving time and reducing risks like pests, mold, and weather-related issues. These strains are ideal for growers aiming for multiple harvests a year or those in challenging climates. They also offer high yields and potent THC levels, rivaling longer-flowering varieties. Here's a quick look at the top options:
- White Widow Fast Flowering: Balanced effects, 7-week flowering, great for beginners.
- Speedy Chile Fast Flowering: 6–7 weeks, compact size, resistant to pests.
- Cream Mandarine Fast Version: Citrus aroma, dense buds, and quick results.
- Bruce Banner Fast Flowering: Strong potency, 7–8 weeks, high yields.
- Super Skunk Auto: Beginner-friendly, autoflowering, 8–10 weeks.
- Amnesia Fast Flowering: Sativa-dominant, high THC, faster version of Amnesia Haze.
- OG Kush Fast Flowering: Classic strain with a shorter 7–9 week flowering time.
These strains thrive indoors and outdoors, with yields ranging from 1–6 oz per plant. Choose based on your growing setup, experience, and desired effects.
Fast Flowers Seed To Harvest. Faster Photos! Tropicana Cookies, GG4 Sherbet
What to Look for in Fast-Flowering Strains
Fast-flowering strains are a game-changer for growers, wrapping up their flowering stage in just 6–8 weeks, compared to the 10–16 weeks many traditional strains require. These strains combine the quick growth of autoflowers with impressive yields. Here’s what to consider when selecting the right one for your setup.
Flowering Time is the top priority. True fast-flowering strains complete their flowering phase in 56 days (8 weeks) or less. This shorter timeline allows indoor growers to potentially achieve up to 8 harvests a year, compared to the usual 4 or 5.
Growing Environment plays a big role in your strain choice. Indoors, you can control conditions like temperature, which should stay between 68°F and 78°F during flowering. Outdoor growers, however, need to pick strains that can handle temperature swings and finish before the first frost. In most U.S. regions, this means harvesting by mid to late September.
Expected Yields vary widely. For indoor growers, fast-flowering varieties typically produce 1.5 to 4 ounces per plant, while outdoor setups often yield more - 3 to 8 ounces per plant depending on the strain and care. High-yielding options like Bruce Banner Fast can produce as much as 6 ounces indoors with proper training techniques.
THC and CBD Levels in fast-flowering strains now match those of traditional varieties. Many strains deliver THC levels between 18% and 25%, with some premium options reaching up to 27%. For medical users, CBD-rich strains offer 8% to 15% CBD while keeping THC levels low, providing therapeutic benefits without overwhelming psychoactive effects.
Difficulty Level ranges from beginner-friendly to advanced. If you’re just starting out, look for hardy strains like Super Skunk Auto or White Widow Fast. These varieties are resistant to pests and mold, making them forgiving of common mistakes like overwatering or nutrient imbalances. Experienced growers can take on more demanding strains that thrive under precise conditions and offer exceptional potency and complex terpene profiles.
Temperature Tolerance is especially important for outdoor cultivation. Some strains can handle nighttime lows of 45°F to 50°F, while heat-resistant varieties can thrive in daytime temperatures up to 85°F to 90°F. Indoors, maintaining stable temperatures is key, as these strains are sensitive to extreme fluctuations during their condensed flowering phase.
Nutrient Requirements differ from regular cannabis plants due to their rapid growth. Fast-flowering strains often need bloom nutrients by week 2 or 3 of flowering, rather than the usual week 4 or 5. Over-fertilizing can damage these plants, so a gentle, organic feeding approach works best.
Harvest Window timing is critical. With such a short flowering period, the optimal harvest window may only last 3–5 days. To ensure peak potency, monitor trichomes closely using a jeweler's loupe or digital microscope.
1. White Widow Fast Flowering
White Widow Fast Flowering is all about speed and potency. It’s a faster-flowering version of the iconic White Widow, retaining its celebrated genetics and powerful effects. This strain is a favorite among growers and users alike, thanks to its quick harvest time and balanced high.
With a mix of uplifting sativa effects and calming indica relaxation, it’s no wonder White Widow Fast Flowering scores an impressive 4.3 out of 5 from 4,624 users on Leafly. Let’s dive into its key characteristics, from flowering time to growing conditions.
"The balance between head and body high is perfect – I feel energized and creative, but not anxious or jittery." - John D., 38, Customer Review
Flowering Time (weeks)
One of the standout features of White Widow Fast Flowering is its quick turnaround. Indoors, it completes its flowering cycle in just 7 weeks (49 days), with some plants finishing slightly later, around 7–8 weeks. This speedy growth is made possible by the introduction of a small amount of Ruderalis genetics into the original strain.
Genetic Background (Indica/Sativa ratio, autoflowering or photoperiod)
This strain’s genetics are carefully balanced to deliver both rapid flowering and well-rounded effects. It boasts a 60% sativa and 40% indica ratio, derived from a cross between a Brazilian sativa landrace and a South Indian indica. As a photoperiod strain, it requires a change in light schedule to initiate flowering. The sativa side provides an uplifting, creative, and euphoric high, while the indica element delivers physical relaxation and relief from tension.
Typical Yield (oz/ft² or oz/plant)
Despite its faster flowering time, White Widow Fast Flowering doesn’t skimp on yields. Indoor growers can expect 1.3 to 1.6 oz/ft² (400–500 g/m²). This output is on par with the original White Widow, showing that speed doesn’t come at the expense of production.
Suitability for Growing Environments (indoor/outdoor, climate)
This strain is versatile, thriving in both indoor setups and cooler outdoor climates. Indoor growers can fine-tune their environment for the best results, while outdoor cultivators in regions with cooler weather will appreciate its resilience and fast flowering.
"As someone dealing with chronic stress, White Widow has been a game-changer. It helps me relax without feeling sluggish." - Maria S., 29, Customer Review
2. Speedy Chile Fast Flowering
Speedy Chile Fast Flowering is all about quick growth and big results packed into a compact plant. With roots in Chilean landraces, it produces dense, resin-coated buds that carry a spicy aroma, a nod to its South American lineage.
What makes Speedy Chile stand out is its ability to thrive in tough conditions while maintaining consistent quality. Its small size makes it a great choice for growers with limited space who still want a reliable harvest. Let’s break down its flowering time, genetics, yield, and growing conditions.
Flowering Time (weeks)
Speedy Chile Fast Flowering wraps up its flowering phase in just 6–7 weeks, with most plants ready by the 6-week mark. A few phenotypes might need an extra week for their trichomes to fully mature. This quick turnaround makes it possible to achieve multiple harvests in a single growing season when grown outdoors in ideal climates.
Genetic Background (Indica/Sativa ratio, autoflowering or photoperiod)
This strain is 70% indica and 30% sativa, created by blending Chilean landrace genetics with fast-flowering European varieties. As a photoperiod strain, it relies on a 12/12 light cycle to enter its flowering stage. The indica dominance provides a deeply calming effect, balanced by a touch of sativa energy to keep users alert and functional.
The Chilean genetics also bring impressive heat resistance and a natural defense against pests and diseases. This makes Speedy Chile a forgiving option for beginners who may still be mastering their cultivation skills.
Typical Yield (oz/ft² or oz/plant)
Indoors, Speedy Chile produces 1.1 to 1.4 oz/ft² (350–450 g/m²), while outdoor plants yield 2–4 oz per plant, depending on the environment and how the plants are trained. Its buds are heavy and compact, allowing growers to make the most of its small frame.
Suitability for Growing Environments (indoor/outdoor, climate)
Speedy Chile thrives both indoors and outdoors, particularly in warm, dry climates. Indoor growers will appreciate its compact height of 24–36 inches, which fits perfectly in grow tents or other small spaces. Outdoors, it performs exceptionally well in Mediterranean and desert climates, thanks to its natural mold resistance and adaptability.
This strain responds well to training techniques like LST (Low Stress Training) and SCROG (Screen of Green), making it a versatile choice for growers looking to maximize their yields. Its resistance to mold also makes it a good option for areas with occasional spikes in humidity during flowering.
3. Cream Mandarine Fast Version
Cream Mandarine Fast Version brings together citrus-inspired genetics with a quick flowering cycle, making it a favorite for growers who value both efficiency and quality. Its sweet mandarin aroma fills the grow space, making the cultivation process almost as rewarding as the final product.
This strain produces dense, trichome-coated buds with a striking orange hue. Its sturdy genetics ensure resilience during flowering, providing growers with a reliable and visually appealing harvest.
Flowering Time
One of the standout features of Cream Mandarine Fast Version is its accelerated flowering cycle. Compared to traditional mandarin varieties, this strain moves from cultivation to harvest in record time. Growers should keep a close eye on trichome development in the final stages to ensure the harvest hits its peak potency and flavor.
Genetic Background
The speed and quality of this strain can be traced back to its strong genetic roots. Cream Mandarine Fast Version is a photoperiod strain created by combining classic mandarin genetics with fast-flowering European varieties. This careful breeding results in a balanced experience - uplifting mental effects paired with soothing physical relaxation. Its mandarin heritage also delivers a bold citrus terpene profile and natural resistance to mold.
Typical Yield
Indoor growers can count on solid yields, while outdoor setups often result in even bigger harvests. The buds feature a compact structure with a high calyx-to-leaf ratio, making the trimming process quicker and less labor-intensive.
Suitability for Growing Environments
Whether grown indoors or outdoors, Cream Mandarine Fast Version adapts well to various environments. Its manageable size is ideal for indoor growers with limited space, while outdoor cultivators in favorable climates will appreciate its fast growth and hardy nature. This versatility makes it a great choice for growers of all experience levels.
4. Bruce Banner Fast Flowering
Bruce Banner Fast Flowering brings the power-packed genetics of its superhero namesake into a shorter growth cycle, making it a favorite for growers who prioritize efficiency. This strain develops dense, resin-coated buds that deliver strong effects without the extended wait times associated with traditional varieties.
The buds themselves are a striking forest green, blanketed in a thick layer of trichomes that glisten under grow lights. With its sturdy structure and vigorous growth, this strain is a dependable option for cultivators seeking consistent results without unnecessary complications. Its aroma is equally captivating, combining earthy notes with a hint of diesel fuel - a scent that intensifies as the harvest nears.
Flowering Time
Bruce Banner Fast Flowering lives up to its name by completing its flowering phase in just 7-8 weeks, shaving off 1-2 weeks compared to the original Bruce Banner strain. This quicker turnaround allows for more harvests throughout the year and helps cut costs. Indoor growers, in particular, benefit from the reduced electricity usage and the ability to rotate crops more efficiently.
Genetic Background
This strain is the result of crossing the original Bruce Banner with fast-flowering European genetics. The outcome is a photoperiod strain with a balanced 60% Sativa / 40% Indica profile. The breeding process preserved the original strain's bold flavors and potency while adding the speed that modern growers value.
Typical Yield
When grown indoors, Bruce Banner Fast Flowering typically yields 1.2–1.5 oz per square foot, while outdoor plants can produce 4–6 oz per plant under optimal conditions. Its dense buds and high flower-to-leaf ratio not only enhance the overall yield but also make the trimming process quicker and easier, saving time during post-harvest.
Suitability for Growing Environments
This strain thrives in both indoor and outdoor environments, though it truly shines in controlled indoor setups where its potential can be maximized. It handles temperature fluctuations better than many other fast-flowering strains, making it a solid choice for outdoor cultivation in USDA zones 6-10. Indoor growers with limited space will appreciate its compact height, which typically ranges from 3-4 feet in standard containers. Thanks to its hardy genetics, Bruce Banner Fast Flowering is also an excellent option for beginners looking to achieve impressive results with minimal experience.
5. Super Skunk Auto
Super Skunk Auto is a great choice for beginners, combining the legendary genetics of Super Skunk with the ease of autoflowering cultivation. This strain has gained popularity among growers looking for consistent results without the hassle of managing light schedules or perfectly timing their harvests. Its quick growth cycle makes it a favorite for those seeking fast harvests.
The buds are compact and amber-toned, with a thick coating of resin that gives them a sticky texture. The aroma is classic skunk, complemented by sweet undertones that become more pronounced as the plant matures. Thanks to its sturdy branches and small size, Super Skunk Auto is ideal for growers with limited space or those who prefer low-maintenance plants.
Let’s take a closer look at its standout features, starting with its rapid flowering time.
Flowering Time
Super Skunk Auto moves from seed to harvest in just 8–10 weeks, automatically transitioning from the vegetative stage to flowering without the need to adjust light schedules. Under optimal conditions, growers can achieve 4-5 harvests per year, making this strain a time-efficient option for maximizing yields.
This speedy growth is rooted in its unique genetic composition.
Genetic Background
Super Skunk Auto features an 80% Indica / 20% Sativa ratio, offering the calming effects typically associated with Indica strains while maintaining a touch of Sativa energy to avoid overwhelming sedation. As an autoflowering strain, it includes Ruderalis genetics, which enable flowering based on age rather than light exposure. This combination makes it a potent yet forgiving choice, especially for novice growers.
Typical Yield
When grown indoors under standard LED lighting, Super Skunk Auto produces 0.8-1.2 oz per square foot. Outdoors, yields range from 2-4 oz per plant, depending on the growing conditions and level of care. While individual yields might be smaller compared to some photoperiod strains, the ability to grow multiple cycles in a year often results in higher overall production.
Suitability for Growing Environments
Super Skunk Auto performs well in both indoor and outdoor setups, thriving in USDA zones 4–9, which covers most regions in the United States. Its compact size, typically 2–3 feet, makes it perfect for indoor spaces or smaller gardens. The strain’s hardy genetics allow it to withstand temperature ranges of 65-80°F, and its natural resistance to mold and pests makes it a forgiving option for growers prone to common issues like overwatering or nutrient imbalances.
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6. Amnesia Fast Flowering
Amnesia Fast Flowering is a feminized, Sativa-dominant strain that offers the best of both worlds: the classic genetics of Amnesia Haze paired with a much shorter flowering period. It’s an excellent choice for growers who want quicker results without compromising on quality.
Genetic Background
This photoperiod hybrid leans heavily toward Sativa and requires a specific light schedule to initiate flowering. It boasts impressive THC levels, ranging from 18% to 24%.
Growing Environment
Amnesia Fast Flowering adapts well to various setups, flourishing both indoors and outdoors. This versatility makes it a reliable option for growers in different climates and conditions.
7. OG Kush Fast Flowering
OG Kush Fast Flowering is a variation of the legendary OG Kush strain, specially developed for those looking to enjoy a quicker harvest without compromising quality.
Flowering Time (weeks)
This strain typically completes its flowering phase in about 8–10 weeks. However, depending on growing conditions, some growers have reported shorter cycles of 7–9 weeks or even as quick as 6–8 weeks. Its accelerated timeline makes it an excellent choice for those seeking efficiency and high yields.
With its reduced flowering time, OG Kush Fast Flowering stands out as a top contender among fast-flowering strains, as highlighted in our upcoming comparison.
Quick Comparison of All 7 Strains
Picking the right fast-flowering strain boils down to your growing setup, experience level, and the kind of effects you're looking for. To make things easier, here's a quick breakdown of each strain's standout features:
| Strain | Flowering Time | Potency | Indoor Yield | Outdoor Yield | Growing Difficulty | Primary Effects | Ideal For |
|---|---|---|---|---|---|---|---|
| White Widow Fast Flowering | Short flowering period | Moderate to high | Generous indoor harvests | High outdoor yields | Easy for beginners | Balanced, relaxing | New growers wanting a reliable option |
| Speedy Chile Fast Flowering | Among the fastest | Moderate | Modest indoor output | Balanced outdoor results | Beginner-friendly | Energetic, uplifting, creative | Quick harvests |
| Cream Mandarine Fast Version | Short to moderate | Moderate | Consistent indoor results | Dependable outdoor performance | Intermediate | Sweet, relaxing, mood-boosting | Growers who love flavorful strains |
| Bruce Banner Fast Flowering | Moderate | Very high | High indoor yield | High outdoor yield | Intermediate | Potent, energizing, focused | Those chasing high potency |
| Super Skunk Auto | Moderate | Consistent | Reliable indoor harvests | Steady outdoor performance | Beginner-friendly | Skunky, balanced, classic | Fans of traditional strains |
| Amnesia Fast Flowering | Moderate | High | Dependable indoor results | Strong outdoor yields | Advanced | Cerebral, intense, long-lasting | Experienced users looking for a challenge |
| OG Kush Fast Flowering | Moderate | Balanced to high | Good indoor yield | Generous outdoor results | Intermediate | Relaxing, euphoric, classic OG | Devotees of OG Kush |
This table should help you weigh your options and find the strain that ticks all the right boxes for your growing goals and personal preferences.
Growing Tips for Fast-Flowering Cannabis
To get the most out of your fast-flowering cannabis strains, maintaining precise environmental conditions is crucial. These strains thrive when temperature and humidity levels are kept stable, as even minor fluctuations can cause stress and impact bud development. Their quick life cycle means there’s little room for error, so careful monitoring ensures healthy buds, strong potency, and optimal yields. By staying on top of these factors, you can fully take advantage of the speedy growth these strains are known for.
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Conclusion
Fast-flowering strains offer a swift path to quality harvests without sacrificing potency, flavor, or yield. The seven varieties highlighted here consistently deliver impressive results in just 6-8 weeks.
These strains bring practical perks to growers of all kinds. With shorter flowering times, you can enjoy multiple harvests in one season, reduce pest exposure, and see quicker returns on your efforts. Indoor growers can optimize their crop cycles, while outdoor cultivators can fit in extra harvests before the weather shifts. This makes fast-flowering strains a smart choice for both commercial growers and home enthusiasts aiming to make the most of their space.
Achieving success with these strains requires attention to timing and care. Keep a close eye on your plants during their shorter flowering period, maintain stable environmental conditions, and resist the urge to harvest too soon. Every day matters when it comes to producing fresh, potent cannabis weeks ahead of the usual schedule.
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FAQs
What makes fast-flowering cannabis strains a better choice for quick harvests?
Fast-flowering cannabis strains are perfect for growers who want to save time while still producing top-tier crops. These strains are known for their shorter flowering periods, which means quicker harvests and the opportunity for multiple growing cycles within a single year. This makes them a smart pick for those working with tight schedules or short growing seasons.
What’s even better? These speedy strains don’t compromise on quality. Many are bred to deliver solid yields and vigorous growth, whether you’re cultivating indoors or outdoors. Their adaptability makes them a great option for growers of all skill levels. If your focus is on getting the most out of your time and effort, fast-flowering strains are a solid way to go.
What are the best ways to create ideal growing conditions for fast-flowering cannabis strains indoors and outdoors?
To grow fast-flowering cannabis strains indoors, aim for temperatures between 64°F and 80°F and stick to a light cycle of 18-20 hours per day. Use reliable LED or HPS grow lights to ensure proper illumination. Good airflow is crucial - set up fans to reduce the risk of mold and pests. Keep humidity levels at 40-50% during the flowering phase for the best results.
For outdoor cultivation, pick a location that gets at least 6 hours of direct sunlight every day. The soil should be nutrient-rich and drain well to support healthy growth. Avoid overcrowding your plants to allow for proper air circulation. Keeping humidity under control and staying vigilant for pests will go a long way in ensuring a successful flowering stage.
What mistakes should I avoid when growing fast-flowering cannabis strains?
Common Mistakes When Growing Fast-Flowering Cannabis Strains
Growing fast-flowering cannabis strains can be rewarding, but there are a few pitfalls to avoid if you want healthy plants and a good harvest.
Overwatering is a common issue that can lead to root rot and mold. To prevent this, allow the soil to dry out a bit between waterings. It’s all about striking the right balance - too much water can suffocate the roots, while too little can stress the plant.
Lighting problems are another frequent challenge. If your grow lights are too close, they can cause heat stress, damaging your plants. On the other hand, placing them too far away may result in weak, leggy growth. Adjust the distance carefully to provide optimal light intensity.
Proper airflow and humidity control are critical, particularly during the flowering stage. Without good ventilation, or if the humidity gets too high, mold and mildew can quickly become a problem. Use fans and dehumidifiers as needed to maintain a healthy environment.
Nutrient imbalances can also harm your plants. Stick to a feeding schedule designed for your specific strain to avoid underfeeding or overloading with nutrients. And perhaps the hardest part for many growers: don’t rush the process. Harvesting too early can significantly reduce the potency and yield of your buds. Patience pays off when it comes to achieving the best possible results.
By keeping an eye on these details, you’ll be well on your way to a successful grow.
