Indoor cannabis seeds

What are indoor cannabis seeds?

Cannabis has been grown outdoors for thousands of years. However, it wasn’t until relatively recently that producers were driven to discover stealthier methods and better conditions to grow marijuana, mainly due to the legal and social repercussions and the climatic difficulties of many areas.

As a result, growers from all around the globe started to plant cannabis seeds indoors. In contrast with outdoor seeds, indoor cannabis seeds do best when they’re grown indoors as they may be more susceptible to bad weather conditions and prefer to remain in a controlled environment.

Therefore, indoor cannabis seeds are those which produce plants that have been bred and stabilised so they can reach their full potential when grown with artificial lighting. Having said that, all the seeds available at Seedstockers for indoor cultivation are also suitable for outdoor grows, although this is still subject to the local climate and the length of summer in your region.

Nowadays, quality indoor cannabis seeds are easier to grow than ever, offering abundant yields that are rich in THC, or in any other cannabinoid that takes your fancy. Naturally, you can find indoor cannabis seeds at Seedstockers at incredibly competitive prices.

Why grow indoor cannabis seeds?

Planting cannabis seeds indoors is the best way to guarantee a growing environment where the grower controls every element. Key factors for the ideal development of the plants, such as light, temperature, ventilation, nutrition, or irrigation, can be monitored and adjusted so as to achieve optimum growing conditions. At no time are indoor growers dependant on the outdoor weather.

Growing cannabis indoors not only helps control the conditions in which plants develop best, but also allows the grower to choose between different cultivation methods (like hydroponics or aeroponics), and even between different growing mediums (such as soil, coco coir, or rockwool). You may need to do a bit more work at the initial planning phase when choosing to grow indoors, but this will result in a more manageable grow in the long run.

Benefits of growing cannabis seeds indoors

In addition to achieving optimal conditions for the development of the plants at every stage of their life cycle, indoor cannabis seeds offer other specific benefits for those who want to grow in a grow tent or grow room:

Predictable growth cycles: Indoors, you can manage the hours of light and darkness to control the growth and flowering stages of the plants. This enables you to plan in advance and predict how long it will take for the plants to grow and mature.

Production throughout the year: Indoor growing eliminates the dependence on seasonal changes, as growers can start the flowering phase at any time of the year, which in turn allows for constant production and a continuous harvest cycle.

Cultivation in limited spaces: Indoor cannabis seeds let you grow in more reduced spaces and control the size of the plants as required. This is particularly useful for growers in urban environments or who only have limited space.

Greater pest control: Plants have increased protection against unwelcome guests with four walls around them. They also have a much lower risk of infiltration of soil- and air-borne pathogens, which could pose a threat to the final yield.

Higher quality and potency: By maintaining rigorous control over the environmental factors, you can optimise the quality and concentration of cannabinoids, terpenes, and other compounds. What’s more, CO2 levels in the grow tent can be controlled to help achieve optimum growth and yielding capacity, and often higher THC levels as well.

Privacy and safety: By growing indoors, you can keep your grow away from prying eyes and potential safety problems. This is particularly important in areas where cannabis cultivation may be subject to legal restrictions.

Wide range of strains available: There is a great variety of cannabis seeds specifically designed for indoor growing, with features that easily adapt to this controlled environment.

How to choose the best cannabis seeds for indoor growing

Most growers look for quick, simple, and abundant crops of first-class buds. This is why another determining factor when growing indoors, aside from having a grow tent or grow room available, is choosing the best cannabis seeds for that environment. Indoor cannabis seeds contain the genetic code which will determine the type, structure, flowering, and potency of the cannabis plants that will grow from them.

Choose indoor cannabis seeds keeping their height in mind

Space is important when you’re growing cannabis: the size of your grow tent is a determining factor when it comes to choosing a strain. You certainly wouldn’t grow a ganja tree inside your apartment, would you? Therefore, the height that your plants can potentially reach is an essential point to consider.

Indicas are known for their wide fan leaves and chubby appearance, whereas sativas often grow tall and thin, with long leaves. Hybrid strains can feature a variety of all these growing traits. Your best bet for indoor growing is to choose strains that don’t have the potential to grow in excess. Indoor varieties are generally more compact and easier to handle, so they’re ideal for growers with limited space.

If you have a grow tent with a limited height, buying a sativa that likes to stretch upwards is probably a mistake. The good news is that this type of strain can still be suitable for indoor growers who use pruning or training techniques to keep their plants under control (for instance, LST or SCROG).

For buyers of cannabis seeds, knowing the height requirements of a specific strain is therefore vital. The most competent and experienced seed companies, like Seedstockers, can always provide you with detailed descriptions of the growth patterns and height potential of their strains.

Choose marijuana seeds according to their flowering time

Growing marijuana indoors also allows the grower to control the duration of the vegetative and flowering periods by changing the number of hours of light that the plants are exposed to. Some growers want to harvest twice as fast; others don’t mind waiting for their long-awaited precious buds. The amount of time that you have available for your crop will determine which type of cannabis seeds are best for you. Unless you’re an ‘old-school grower’ or an amateur breeder looking for regular seeds, most indoor growers choose these types of cannabis seeds:

Autoflowering seeds: They don’t depend on the photoperiod and can usually grow with as much light as you want to give them, because they flower automatically between weeks 4 and 6, and are ready for harvest around 75 days after germination. Keep in mind that some autoflowering strains, such as OG Kush Auto and Amnesia Auto, can be ready for harvest in just 9 - 10 weeks; whereas others like AK420 Auto or Santa Marta Haze Auto can take between 11 and 12 weeks./

Photoperiod feminised seeds: The vegetative period is defined by the grower, and plants are usually exposed to 18 - 24 hours of light for 5 - 6 weeks. The flowering phase of this type of seeds starts when the photoperiod is reduced to 12 hours of light. The flowering time is usually between 8 and 9 weeks for indica strains such as Cookies&Cream and Sherbet. Longer-flowering strains, including certain sativa varieties like Sour Diesel, may take a few more weeks to flower.

Fast flowering seeds: These seeds are created from the cross of a photodependent feminised variety and an autoflowering strain, resulting in plants with a shorter flowering phase, around 2 weeks shorter than that of the original version. But this doesn’t mean that their yielding capacity is compromised: as they need a change in the photoperiod to 12/12 to flower, you can extend their vegetative period for as long as you like and even produce real trees with them, which you can check for yourself with our XXL Fast and Gelato 41 Fast.

Yielding potential of indoor cannabis seeds

There are so many factors at play that it’s hard to offer an average yield. The type of lighting, growing technique, skill level, and cannabis genetics all have a great impact on this. Many growers aim to produce between 75 and 100 g per indoor plant, although rookies may obtain less, whilst professional producers may obtain a much higher number. An optimal figure for any grower could range between 500 and 600 g/m2 of dense and ripe buds with an extremely fast response time.

Can you grow several cannabis strains together indoors?

Many indoor growers are used to growing a specific strain per cycle. This is usually much easier because all the plants are homogeneous in terms of flowering time, nutrient requirements, and the amount of light that they need. However, growing more than one variety at a time has many benefits and can bring great diversity to your crop.

To achieve this, it may be useful to select cannabis varieties with very similar growth characteristics. Due to the greater height of sativas, you’ll find it difficult to maintain a uniform canopy if you grow them alongside indicas, because the indica strains will end up in the shade and won’t get enough light, which could lead to stunted growth.

On the other hand, hybrids are a more viable option to start off with, because their similarities mean that they can be easily balanced out. This in turn facilitates maintenance: the identification of sick plants, and even simple tasks such as watering or pruning, can become problematic in a grow room full of quite different plants.

It may also not seem like much that each plant requires a different feeding ratio, but having to mix many different nutrient plans several times a week for months on end can become rather tedious: this can also be avoided by selecting strains with comparable needs.

What do you need in order to grow the best cannabis seeds indoors?

Growing marijuana indoors doesn’t have to be difficult. All you need is the right equipment, which you can easily buy online or in a grow shop. These are the key elements:

Grow space: a place suitably prepared and conditioned for indoor cultivation. You can use a grow tent or an entire room.

Lighting system: grow lamps, for instance LED, High Pressure Sodium (HPS), Metal Halide (MH), or CFL. The choice of lighting will depend on the growth phase of the plants. Ventilation: extractors and fans to maintain good air circulation and control temperature and humidity levels.

Filtration system: activated carbon filters to remove odours, and suitable ventilation systems to keep the air fresh and clean.

Pots and growing medium: for instance, potting soil or specific substrate for indoor cannabis growing.

Irrigation: an appropriate irrigation system, such as watering cans, automatic irrigation systems, or drip irrigation.

Nutrients: fertilisers and specific nutrients for every growth phase of your cannabis plants.

Humidity and temperature control: hygrometer and thermometer to control the humidity and temperature within the growing space.

pH control: pH and EC meters to adjust the water’s pH and electroconductivity, to maintain a proper balance for the absorption of nutrients.

Cannabis seeds: and, of course, quality cannabis seeds… Strains that easily adapt to your personal needs and preferences.

How to germinate cannabis seeds indoors

Germinating cannabis seeds indoors is vital, as this is the only way to control several factors which influence this process. Ensure relative humidity levels are between 75 and 90% and keep the temperature between 22 and 25 degrees. Once you’ve got hold of your seeds, there are several ways to germinate them:

Paper napkin soaked in water: This is the most commonly used method. Place the wet napkin in a small plastic container and keep it in a dark place. Germination occurs between 1 and 7 days.

Seeds directly in water: Place the seeds in a glass or container with warm water (at 23ºC). Keep in a dark place. From the third day, the seeds should start to open to free the radicles.

In Jiffy pellets or rockwool: There are specific pellets made of peat and/or coco coir which facilitate the seed germination process. They contribute to maintaining good moisture levels and have a compact structure which promotes the initial development of the roots.

Directly in the soil: The growers who choose this germination technique normally use small pots. The substrate (soil or coco coir) is moistened in advance, leaving a small hole with a depth of 1 - 1.5 cm where the seed is placed before being covered.

How to grow indoor marijuana seeds

A grow room can be as small as a tent or as big as a barn. But regardless the size of your set-up, you’ll still want to pamper your plants to achieve maximum growth and strength.

Just like people, plants develop best in a particular temperature and humidity range, and both parameters are closely related to each other. To help you make the most of your efforts with indoor growing, we have gathered the optimal values to help you achieve the ideal grow room conditions to successfully grow cannabis seeds indoors./

Vegetative growth:

Temperature: between 21 and 28°C during the day. This can drop down to 18 - 24°C during the night (but there should never be more than 10ºC difference between the day and night temperatures).

Humidity: it can be gradually reduced from 70 – 80% (during the germination phase) to 40 – 70%. Generally, maintaining humidity levels around 50 – 70% is optimal.

Flowering:

Temperature: during the first few weeks, keep the temperature at 21 - 26°C. In the last few weeks, gradually reduce to 18 - 24°C to stimulate the production of resin and essential oils.

Humidity: Gradually reduce from 50 - 70% at the beginning to around 40 – 50% in the last weeks of flowering. Low humidity levels help prevent mould problems in the buds.

It is important to monitor and adjust both temperature and humidity according to the specific needs of your grow and the genetics of the plants. A good ventilation and humidification system, as well as the use of thermohygrometers, will help you control and keep these parameters within the appropriate range.

What are the best indoor cannabis seeds?

The choice of the best cannabis seeds for indoor grows depends on your preferences, skill level, and growing conditions. Among the many options, always look for genetically stable cannabis varieties like the ones you can find at Seedstockers. These seeds have a high degree of homogeneity and predictability, with little trait fluctuation between plants. In other words, genetic stability means that you can predict that the different phenotypes produced by these seeds will be similar.

Whether you’re a rookie grower who wants zero trouble, or your experience enables you to get the best out of a cannabis plant, our selection of indoor marijuana seeds will definitely captivate you. But if you don’t know where to start with our wide range of options, here are some examples that will surely be to your liking:

The best indoor feminised marijuana seeds

Black Rainbow Feminised

With an average height for a hybrid and a great response to SCROG and other training techniques, Black Rainbow has a growth pattern with a clear bushy inclination and outstanding resin production. This is certainly an ideal choice for indoor growers looking for a reliable strain with delicious organoleptic properties. During indoor cultivation, it is recommended to give the roots plenty of space to expand, which enables the plant to reveal her enormous potential during the flowering. Therefore, extending the vegetative phase for a few extra weeks can be highly beneficial to obtain abundant crops.

Triton Biscotto Lime Feminised

Triton Biscotto Lime is an accessible indoor strain that appreciates intense light and a well-aerated substrate to ensure optimal root oxygenation and maximum nutrient absorption. She’s especially favourable to pruning and training techniques, which makes her a perfect choice for those looking to enhance their yield through these practices. In addition, her flowering cycle is short (of barely eight weeks), so she’s ideal for those who want multiple growing cycles in a year, and who want to make the most of the time available. As a reward, she delivers compact and dense buds with a neon green colour that are dotted with stunning amber pistils – simply irresistible./

Panty Punch Feminised

With the roots of the legendary OG Kush present in the ancestors of Panty Punch (Pink Panties X Purple Punch), this variety awakens the excitement of anyone who dreams of making the most of their growing corner. Plants develop a uniform canopy which is easy to handle and doesn’t require much maintenance. Make sure you keep a good flow of fresh air circulating around the plants, and add supports to alleviate the excess weight produced by her huge buds. This strain is a real gift for those venturing into the magic of indoor growing for the first time, or for expert growers who know that the best of the cannabis universe is found on each and every one of her shoots.

The best indoor autoflowering cannabis seeds

Apollo Black Cherry Auto

To create this autoflowering strain, our Seedstockers breeders crossed Apollo Black Cherry with a Black Domina Auto, resulting in an indica-dominant hybrid that delivers excellent results indoors. This plant has a full growing cycle of 12 weeks from seed to harvest; slightly longer than average but with the guarantee of large plants and high yields. During the last few weeks of flowering, Apollo Black Cherry Auto releases an extremely powerful aroma, so don’t forget to get a good carbon filter before growing this aromatic gem, so you can mask her outstanding cherry notes and subtle touches of earth and spices, reminiscent of the old-school Afghan hash.

Gelato 41 Auto

This is a truly easy-to-grow strain that offers the best of the trendiest American flavours. She’s ideal for novice growers looking for monstrous yields in just 65 days from seed to harvest. An autoflowering plant of average height that grows up to 70 - 100 cm, so she’s perfect to keep a low profile and for spaces with a limited height. When she reaches maturity, she reveals a structure that leans towards her indica side, with an amazing density, strongly embracing her thick lateral branches which frame her majestic main cola. A wise choice is to grow her in SOG (Sea of Green), filling the growing space with these little giants of nature.

Black Berry Gum Auto

This is an autoflowering jewel that’s ready to dazzle in the most special corner of every grow. Her compact and efficient nature makes this plant the muse of indoor growing, offering generous yields in tiny spaces which appear in the blink of an eye. A hardy warrior that doesn’t need much attention yet develops a solid structure full of branches that support her dense and compact buds. This variety has become the magic ally of indoor growers, giving them the chance to fill their larders in record time, and rewarding them not only with lots of pleasure for the palate, but also with a visual spectacle when she takes on stunning purple hues towards the end of the flowering.

Buy the best cannabis seeds for indoor growing online

Most cannabis fans wonder where to buy quality indoor cannabis seeds. The preferable alternative is to purchase them from a reliable online seed bank like Seedstockers, where we offer you a wide range of high-yielding cannabis varieties at affordable prices and products that are always guaranteed.

Indoor seeds are available in 1, 3, 5, and 25-seed packs. All potential customers are invited to visit our website, check out our indoor seeds, and shop online, where you can easily make payments using a credit card.