Published on: 06/06/2025
Autoflowering seeds are among the most popular in cannabis cultivation discover everything here
In the world of cannabis cultivation, autoflowering seeds have revolutionized the way many growers, both seasoned and beginners, approach planting and growing, significantly transforming traditional practices. This category of seeds has recently gained great success thanks to its remarkable versatility in different growing environments and the speed with which it allows growers to harvest.
In this article, you’ll find a complete overview of autoflowering cannabis seeds: from their definition to the benefits of using them, including the best methods for growing both indoors and outdoors, and the reasons to choose the high-quality selections offered by Sensory Seeds.
What Are Autoflowering Cannabis Seeds
Autoflowering cannabis seeds are a special genetic variety that does not rely on the photoperiod to trigger the flowering phase. Unlike photoperiod plants, which require specific cycles of light and darkness to transition from vegetative growth to flowering, autoflowering plants bloom automatically after a certain period, usually between two and four weeks from germination. This phenomenon is made possible by crossbreeding with the Ruderalis variety, a subspecies of cannabis native to the cold regions of Eastern Europe and Central Asia.
Ruderalis is known for its ability to adapt to harsh climates and its tendency to flower regardless of day length. Autoflowering hybrids inherit these traits while combining them with the qualities of indica or sativa strains. The result is a plant that stands out for its compact size, speed, resilience, and high productivity.
The Advantages of Using Autoflowering Cannabis Seeds
Growing autoflowering cannabis offers a number of significant advantages that make it ideal for both beginners and experienced cultivators.
First and foremost is the speed of the growth cycle. Autoflowering plants complete their life cycle in about 8 to 10 weeks, from planting to harvest. This allows for multiple harvests per year, especially in indoor setups or mild climates.
Another key benefit is the ease of cultivation. Since they do not require changes to the light cycle, they are perfect for those with little experience or for growers looking for a low-maintenance option. Additionally, their compact size makes them discreet and suitable even for small spaces.
Autoflowering plants are also less vulnerable to growing mistakes, thanks in part to their Ruderalis genetics, which make them resistant to diseases, mold, and pests. This resilience makes them ideal for less controlled environments or for growers who want to minimize the use of pesticides and other chemicals.
Furthermore, another significant advantage is their ability to thrive in less favorable climates. The speed of their life cycle allows growers to plant and harvest autoflowering strains during the most favorable weather windows, thus avoiding the colder seasons.
How to Best Grow Autoflowering Cannabis Seeds
To achieve the best results when growing autoflowering marijuana seeds, it is essential to set up a suitable environment right from the start. The first aspect to consider is the soil: autoflowering plants require a light, well-draining, and well-aerated substrate. An ideal mix could include peat, coconut fiber, and perlite in balanced proportions, possibly enriched with worm humus to provide a natural supply of nutrients.
The optimal soil pH should range between 6.0 and 6.5. It is important not to overuse fertilizers in the early weeks, as autoflowering plants, due to their rapid growth, can easily suffer from nutrient burn if overfed. It is better to start with light doses and gradually increase them during the vegetative stage.
Climate conditions are a crucial factor: the ideal temperature for autoflowering plants is between 20 and 28°C, while relative humidity should be kept around 60% during the vegetative phase and reduced to 40-50% during flowering. Watering should be regular but always moderate, to avoid water stagnation that could lead to root rot. It is important to wait until the top 2-3 cm of soil have dried out before watering again.
Another key factor is light. Although autoflowering plants are not affected by the photoperiod, they still require a good amount of light to develop properly. In outdoor cultivation, it is advisable to place them in well-sunned areas, while in indoor environments, the use of high-efficiency LED lamps is ideal.
How to Grow Autoflowering Seeds Indoors
Indoor cultivation offers the advantage of total control over light, temperature, and humidity, all crucial factors to ensure healthy and abundant growth. To grow autoflowering weed seeds indoors, it is essential to set up a suitable space, which can be a grow box or a dedicated room. Within this environment, it is necessary to install an appropriate lighting system: LED lamps are the most recommended for their energy efficiency and their ability to provide a full light spectrum.
A recommended light cycle for autoflowering plants grown indoors is 18 hours of light and 6 hours of darkness each day. However, some growers prefer a continuous 20/4 cycle, which maximizes photosynthesis and encourages greater yields.
Ventilation is another aspect that should not be overlooked: air must circulate freely to prevent the buildup of humidity and CO2. It is advisable to equip the space with exhaust fans, circulation fans, and carbon filters to keep the environment healthy and to control any odors.
The nutrient cycle should be tailored to the specific needs of autoflowering plants. Since these plants grow quickly, it is essential to provide the right fertilizers at the right time, following a schedule that supports each stage of development.
How to Grow Autoflowering Seeds Outdoors
Outdoor cultivation is simpler in logistical terms but requires more attention to environmental conditions. The advantage of autoflowering plants outdoors is that they can be planted even during non-traditional times of the year, thanks to their independence from the photoperiod.
The best time to plant outdoors is late spring, when nighttime temperatures do not drop below 15°C. However, in Mediterranean regions, it is possible to get up to three harvests a year, starting as early as March and finishing in October.
It is essential to choose a well-sunny spot that is sheltered from strong winds. The soil should be well-prepared and, if necessary, enriched with compost or specific substrates. In case of frequent rain, growing in pots or elevated containers can be beneficial to improve drainage.
Plants should be monitored regularly to prevent pest or mold attacks. Thanks to the natural resilience of autoflowering plants, the use of biological defense methods is often sufficient. Even in outdoor cultivation, proper irrigation management is crucial: it is better to water early in the morning to avoid excessive evaporation and reduce water stress.
Why Choose Autoflowering Cannabis Seeds from Sensory Seeds
Sensory Seeds has established itself as a leading name in the European market for high-quality collectible cannabis seeds. The autoflowering seed catalog available at Sensory Seeds is the result of collaborations with select producers and careful genetic selection, ensuring excellent products for even the most discerning growers.
Here are some recommended strains:
- BSF Auto Gorilla Glue: A high-quality feminized autoflowering strain, ideal for collectors and cannabis enthusiasts. This plant, the result of crossing Chem Sister, Sour Dubb, and Chocolate Diesel, has a 70% sativa and 30% indica genetic profile, with high THC and low CBD content. Its flowering time is 9-10 weeks, producing resinous buds with a sweet, earthy taste and chocolate notes. Suitable for both indoor and outdoor cultivation, it offers yields of up to 350-500 g/m² indoors and 50-300 g/plant outdoors. The Gorilla Glue #4 is prized for its resistance to diseases and pests, making it an ideal choice for growers of all levels.
- BSF Auto AK 47: A high-THC feminized autoflowering strain, ideal for collectors and cannabis enthusiasts. The result of crossing genetics from Mexico, Colombia, and Thailand, it has a 60% sativa and 40% indica genetic profile. This medium-large plant flowers in about 70 days, yielding up to 500-600 g/m² indoors and 50-70 g/plant outdoors. Its aromatic profile is sweet and intense, with citrus and lemon notes. It is valued for its resistance to pests and weather conditions, making it suitable for both indoor and outdoor cultivation.
- BSF Auto Black Dom XXL: A high-THC feminized autoflowering strain, ideal for collectors and cannabis enthusiasts. This plant, with an 80% indica and 20% sativa genetic profile, is resistant to pests, fungi, and mold, making it perfect even for beginner growers. Its full flowering cycle lasts between 50 and 55 days, yielding up to 200-400 g/m² indoors and 50-450 g/plant outdoors. The aromatic profile is intense and earthy, with pine notes.
- BSF Red Critical: A high-THC feminized autoflowering strain, ideal for collectors and cannabis enthusiasts. The result of crossing Critical Auto with a red phenotype selection, it has a 70% sativa and 30% indica genetic profile. This medium-tall plant flowers in about 45-50 days, yielding up to 450 g/m² indoors and 350 g/plant outdoors. Its aromatic profile is sweet and fruity, with notes reminiscent of ripe red fruits. It is valued for its resistance to pests and weather conditions, making it suitable for both indoor and outdoor cultivation.
- BSF Orange Blossom: A high-THC feminized autoflowering strain, ideal for collectors and cannabis enthusiasts. The result of crossing Cali Orange with Skunk pre-90, it has a 70% sativa and 30% indica genetic profile. This medium-tall plant flowers in about 75-80 days, yielding up to 600 g/m² indoors and 300 g/plant outdoors. Its aromatic profile is reminiscent of orange and mandarin, with a sweet and fruity flavor. Perfect for cultivation techniques such as Scrog and Sog, it is appreciated for its resistance and ease of care.
The seeds offered by Sensory Seeds are discreetly packaged, ensuring privacy and security during purchase. In addition, the detailed description of each strain helps users make an informed choice based on their preferences and needs.
Read also: Complete Guide to Cannabis Seed Germination
Conclusion
Autoflowering cannabis seeds represent an innovative, practical, and highly efficient solution for those who want to cultivate cannabis easily but with excellent results. Thanks to their robust genetics, rapid growth, and ease of management, they are an excellent choice for both beginners and professionals.
Whether you prefer indoor cultivation to have full control over the process, or outdoor cultivation to make the most of natural light, autoflowering seeds offer unparalleled versatility. Turning to reliable suppliers like Sensoryseeds ensures access to selected, safe, and high-performance strains.
Investing in these seeds means obtaining healthy plants, generous yields, and the satisfaction of a successful and fruitful cultivation. All that’s left is to choose the variety that suits you best and embark on this fascinating adventure.
