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Indoor Seeds
How reviews are checked
Both Kiyoh and eKomi invite customers to leave a review after an order. Kiyoh states that it checks reviews for authenticity. The Kiyoh score covers all our reviews to date; the eKomi score covers the last 12 months.
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Indoor seeds are strains that do well under grow lights in a tent, closet or spare room, where you control light, temperature and humidity. The range includes compact plants and fast finishers. Each product page shows plant size, flowering time and difficulty, so you can match a strain to your space before you order. Tall sativas need height and training, while compact plants and autoflowers fit small tents.
Indoor seeds are simply cannabis strains chosen and bred to perform well under artificial light, in a tent, closet, or grow room, rather than in a garden. Growing cannabis indoor gives you control over every variable, and that control is the whole appeal, whether you're working around a short season, unpredictable weather, or a need to keep the grow out of sight.
Full Control Over Light, Temperature, and Humidity
Indoors, you set the light schedule instead of waiting on the sun, which means photoperiod strains flower exactly when you switch to 12/12 rather than whenever the season turns. Temperature, humidity, and airflow are all yours to dial in too, so a plant that would struggle outdoors in a cold or humid climate can still thrive under the right indoor setup — no weather forecast required.
Discretion and Harvests All Year Round
Growing indoor keeps the whole operation out of view from neighbors or passersby, and because you're not waiting on a single outdoor season, an indoor setup can run multiple harvests a year back to back instead of one per summer.
Feminized and Autoflower Seeds Suit Indoor Grows Best
Space is usually the limiting factor indoors, which is why feminized seeds (no males to identify and remove) and autoflower seeds (compact, fast-finishing, and forgiving of a fixed light schedule) are the most popular choices for an indoor tent or grow room — pick either, or both, alongside the indica and sativa strains below based on the effect you're after.
Indoor cannabis seeds for sale
Indoors you decide when the plant gets light, how warm the room is and how much water and nutrient it receives. That control is the appeal, and it means the plant has to fit the space.
A strain that works well in a tent is usually compact or easy to train, finishes in a reasonable time and handles a steady climate.
Most seeds in this category are average-sized plants, with a good group of compact ones. The majority are listed with a fast flowering time of 6 to 10 weeks, which keeps each cycle short.
What are the best seeds for growing indoors?
For a small tent, a compact autoflower or an indica-dominant feminized strain is the usual answer. For a larger room, a feminized photoperiod strain lets you decide how big the plant gets. Check the plant size and difficulty on each product page before you order.
Good places to start are Caramelicious autoflower for a small tent or Mescalina feminized for a photoperiod grow.
How tall can plants get in a tent?
Start with the height of your tent or room, and subtract the pot and the light. A plant often doubles in height when it starts to flower, so a 100 cm (about 3 feet) plant at the end of the vegetative stage can reach 200 cm.
For small tents, choose compact strains, autoflowers, or photoperiod strains that you keep in the vegetative stage for only two or three weeks. Bigger spaces give you more freedom, and a screen of green spreads the branches so the light reaches them evenly.
Feminized photoperiod or autoflower
Most indoor growers choose between two routes. Feminized seeds let you control size by deciding how long the plant stays in the vegetative stage before you switch to 12 hours of light. Autoflower seeds finish on their own clock, which suits small tents and quick turnarounds.
If you are new, autoflowers are usually the simpler first grow, and feminized photoperiod plants the natural next step.
What does a basic indoor setup need?
A standard setup is a tent, a full-spectrum LED light, an exhaust fan with a carbon filter, a circulation fan and a timer. Aim for about 22 to 28 degrees Celsius (72 to 82 degrees Fahrenheit) while the lights are on and 40 to 60 percent relative humidity.
Humidity should drop in the last weeks of flowering. A pH meter helps once you start feeding.
Our grow guide goes through each part of the setup.
How do you control smell and noise?
A carbon filter on the exhaust fan removes most of the smell from a tent, and it should be sized for the tent's volume, following the filter maker's rating. Hang the fan on rubber hangers so it does not touch the tent frame, which cuts most of the noise. Smell grows stronger in the last weeks of flowering.
Best indoor seeds by tent size
In a small tent, choose a compact autoflower or a short indica-dominant strain. In a medium tent, an average-sized feminized strain trained with topping fits well. In a large tent or a spare room, tall sativas become possible, as long as you keep the vegetative stage short and train the branches flat.
Match the plant to the tent, not the other way around.
What decides indoor yield?
Light intensity, canopy size and time in the vegetative stage matter most. A strong light over an even canopy beats a tall plant under weak light. Plant size on the product page gives a rough guide, but your own setup decides the result.
If you are also thinking about a garden plot, take a look at our outdoor seeds. To start the seeds, follow our germination guide, and see the germination guarantee for seeds that fail to sprout.
Frequently asked questions
Compact strains and autoflowers are the easiest in small tents because they stay short. Photoperiod strains also work if you keep the vegetative stage to two or three weeks and train the plant. Check the plant size field on each product page and compare it with the height of your tent.
Photoperiod plants usually get 18 hours of light a day while growing and 12 hours a day to flower. Autoflowers can stay on 18 hours of light for the whole grow. A full-spectrum LED of suitable wattage for your tent size is the common choice, placed so the canopy gets even light.
Most can be grown indoors, but tall sativas need height and training. If you have limited space, check the plant size and flowering time on the product page before you order. Compact and average-sized strains are the safe choice for a first indoor grow.
An autoflower is often finished in 10 to 14 weeks from seed. A photoperiod strain usually needs 4 to 8 weeks of vegetation plus 6 to 12 weeks of flowering, depending on the strain. Add a few days for drying and curing after the harvest.
A common target is 22 to 28 degrees Celsius (72 to 82 degrees Fahrenheit) while the lights are on, with 40 to 60 percent relative humidity, lower in late flowering. Good airflow helps keep both steady, and a small thermometer-hygrometer in the canopy shows what the plants feel.
Subtract the pot and the distance to the light from the tent height, then expect the plant to double during flowering. A 100 cm plant at the end of vegetation can reach about 200 cm. Compact strains and autoflowers fit lower tents, and tall sativas need the most room.
