Best weed strains to grow indoors—the best indoor strains this year! Easy high-yield and exotic indoor cannabis strains list. Indoor marijuana seeds for sale.
The best indoor strains of marijuana generally perform at their the best when grown indoors. These cannabis plants are easier to grow in a controlled indoor climate, but can also grow outdoors under the right conditions.
The most suitable strains for indoor growing don’t grow too tall yet produce rewarding harvests in grow tents and commercial warehouses alike. Some indoor strains are easy for beginners to grow while others take skill. You can buy indoor marijuana seeds to potentially get higher yields, better quality, or quicker turnaround out of your indoor grow.
Every indoor strain listed below is ready to buy as feminized or autoflower seeds with fast US shipping and delivery.
Best Feminized Indoor Strains
Black Sugar
Overview: Black Sugar is a potent indica strain with excellent production and quality. Black Sugar plants are quick to flower and naturally short in height, making this strain a great choice to grow in small spaces. Despite its short stature and grow time, Black Sugar yields very well indoors. Its buds are dense and covered in crystals with a wildly fruity aroma. The effects of Black Sugar are powerfully relaxing and can relieve medical cannabis users. Over 20% THC.
| Flowering Time | 50–55 days |
|---|---|
| Brand | Seedsman |
| Pack Size | 1–100 seeds |
| Yield | 600 g/m2 |
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Blackberry Moonrocks
Overview: Blackberry Moonrocks is a mostly indica hybrid with exceptional bag appeal, potency, and yield. Its buds are colorful, rock hard, and filled with sticky trichomes. Blackberry Moonrocks has a pronounced terpene profile with flavors similar to blackberry, blueberry, and lavender. Blackberry Moonrocks feminized seeds are easily cultivated indoors and become high-yielding weed plants in a short time. The effects of Blackberry Moonrocks are calming and sedative. 26% THC
| Flowering Time | 8–9 weeks |
|---|---|
| Brand | Blimburn |
| Pack Size | 1–100 seeds |
| Yield | 550 g/m2 |
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Purple Gelato
Overview: Purple Gelato is a cross of two well-known American marijuana strains—Purple Haze and Gelato. True to its name, Purple Gelato has purple-tinged buds full of dessert-like aromas and flavors. Purple Gelato feminized seeds become bushy crops that perform best grown indoors by the hands of skilled cultivators. With proper TLC, Purple Gelato produces heavy yields. The effects of Purple Gelato balance between mental stimulation and physical comfort. Up to 22% THC
| Flowering Time | 8–10 weeks |
|---|---|
| Brand | Homegrown |
| Pack Size | 4/8/12/24 seeds |
| Yield | 18–21 oz/m2 |
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White Widow
Overview: White Widow is a world-famous cannabis strain with frosty white buds packed full of trichomes. White Widow feminized seeds are a great choice for beginners and easy to grow for anyone. The plants stay compact and adapt to a range of indoor growing methods including, but not limited to, SOG and SCROG techniques. White Widow produces high yields of quality flower with a signature aroma and flavor. The effects of White Widow are potently cerebral with blissful body sensations. Up to 19% THC.
| Flowering Time | 9 weeks |
|---|---|
| Brand | ILGM |
| Pack Size | 5/10/20 seeds |
| Yield | 18 oz/m2 |
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Gorilla Zkittlez
Overview: Gorilla Zkittlez is a cross of the West Coast strains Gorilla Glue #4 and Zkittlez that produces bumper crops of potent cannabis. This top indica hybrid is an emerging favorite of indoor growers and cannabis enthusiasts across the globe. Gorilla Zkittlez feminized seeds are of average difficulty to grow and the attentive beginner can achieve outstanding results. Its cured buds glisten with trichomes and exude very fruity scents. The high of Gorilla Zkittlez is powerful, thought-provoking, and tranquil. Up to 24% THC.
| Flowering Time | 8–9 weeks |
|---|---|
| Brand | Barney’s Farm |
| Pack Size | 1/3/5/10 seeds |
| Yield | 500–700 g/m2 |
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Fruity Pebbles
Overview: Fruity Pebbles, aka Fruity Pebbles OG or FPOG, is a highly-prized US weed strain with a super fruity smell and taste similar to the sugary cereal. Fruity Pebbles feminized seeds grow mostly indica phenotypes that are quick to flower. The plants don’t require much space to flourish, which makes this strain perfectly suited to grow tents or other small indoor areas. Fruity Pebbles delivers effects felt in both the mind and body.
| Flowering Time | 8–9 weeks |
|---|---|
| Brand | Blimburn |
| Pack Size | 1–100 seeds |
| Yield | 500 g/m2 |
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Grandaddy Purple
Overview: Grandaddy Purple, or GDP for short, is a renowned purple weed strain best known for its unreal color scheme and excellent quality. These purple-colored buds shine in trichomes and exude sweet aromas like candy. Grandaddy Purple feminized seeds are easily manageable for indoor growers in confined spaces. The mostly indica plants grow short and bushy at only 3 feet tall indoors yet produce respectable yields. The effects of Grandaddy Purple are heavy and narcotic. Up to 22% THC.
| Flowering Time | 8–10 weeks |
|---|---|
| Brand | Homegrown |
| Pack Size | 4/8/12/24 seeds |
| Yield | 18 oz/m2 |
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Killer Kush Fast Version
Overview: Killer Kush Fast Version is a fast-flowering cannabis strain made with an elite OG Kush clone and an indica-dominant autoflower. This photoperiod (non-autoflower) variety takes only seven weeks of flowering to mature its aromatic buds. Killer Kush Fast Version feminized seeds are able to perform at their best when grown indoors. These mostly indica plants grow big and dense buds with loads of resin, superb terpene profiles, and knockout effects. Up to 25% THC.
| Flowering Time | 7 weeks |
|---|---|
| Brand | Sweet Seeds |
| Pack Size | 3/5/10 seeds |
| Yield | 400–600 g/m2 |
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Blue Gelato 41
Overview: Blue Gelato 41 is an exotic 3-way cross of Blueberry, GSC Thin Mints, and Sunset Sherbet. Many of the resulting phenotypes grow blue and purple-colored buds, while all are full of resin with sweet and earthy citrus flavors. A popular strain among indoor growers, Blue Gelato 41 feminized seeds can be grown with great results both indoors and outdoors. The finished product has an intoxicating aroma and an energetic, clear-headed high.
| Flowering Time | 9–10 weeks |
|---|---|
| Brand | Barney’s Farm |
| Pack Size | 1/3/5/10 seeds |
| Yield | 600–700 g/m2 |
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AK-47
Overview: AK-47 is a famous sativa-dominant hybrid with incredible odor and strength. This award-winning best weed strain is beloved for its pungent smell and hard-hitting effects. AK-47 feminized seeds perform at their best when grown indoors with adequate ventilation and humidity control. The plants are compact and quick-flowering with dense and sticky buds. Up to 20% THC.
| Flowering Time | 7–9 weeks |
|---|---|
| Brand | ILGM |
| Pack Size | 5/10/20 seeds |
| Yield | 12–18 oz/plant |
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Baked Apple
Overview: Baked Apple is a mostly indica cross of Northern Lights and Cinderella 99 with hearty yields of shiny buds. Baked Apple feminized seeds become bushy plants that don’t grow taller than 39 inches, making them perfect for small indoor grow areas. This strain is easy to grow for beginners or any skill level of grower trying to maximize yield in limited spaces. The end result is very fruity and provides an intense physical high with cerebral stimulation. Up to 22% THC.
| Flowering Time | 8 weeks |
|---|---|
| Brand | Homegrown |
| Pack Size | 4/8/12/24 seeds |
| Yield | 14–18 oz/m2 |
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Ice Cream Cake
Overview: Ice Cream Cake is an indica-dominant hybrid made by crossing Gelato #33 with Wedding Cake. Its resinous flowers are dense and colorful with creamy vanilla aroma and flavor profiles. Ice Cream Cake feminized seeds are easy to cultivate indoors and adapt well to any indoor grow setup. The effects of Ice Cream Cake are peaceful and soothing. 22–25% THC.
| Flowering Time | 60–65 days |
|---|---|
| Brand | Blimburn |
| Pack Size | 1–100 seeds |
| Yield | Medium |
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Sunset Sherbet
Overview: Sunset Sherbet, aka Sherbet OG or Sherbert, is a mostly indica strain from the US with great potency and appealing flavor. Sunset Sherbet marijuana is liberally covered in trichomes and it smells and tastes like sweet candy. Sunset Sherbet feminized seeds grow into low-maintenance plants that thrive both indoors and out. However, some topping or training indoors may be necessary for optimal usage of space. The effects of Sunset Sherbet promote full-body relaxation and worry-free thoughts. Up to 21% THC.
| Flowering Time | 8 weeks |
|---|---|
| Brand | ILGM |
| Pack Size | 5/10/20 seeds |
| Yield | 16–21 oz/m2 |
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Best Autoflower Indoor Strains
Gorilla Girl XL Auto
Overview: Gorilla Girl XL Auto is a sativa-dominant autoflower strain with extra large yields in a short life cycle. Gorilla Girl XL Auto feminized seeds grow into 2–4 foot tall plants that reach maturity in just nine weeks from germination. This strain’s relatively small size makes it appropriate for indoor cultivation in confined spaces. Its buds have large calyxes covered in trichomes with remarkably fruity terpene profiles and deliver powerful highs. 18–25% THC.
| Flowering Time | 9 weeks |
|---|---|
| Brand | Sweet Seeds |
| Pack Size | 3/5 seeds |
| Yield | 450–550 g/m2 |
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Blueberry Auto
Overview: Blueberry Auto is an autoflower version of the esteemed Blueberry marijuana strain. Its buds taste and smell like real blueberries. Blueberry Auto takes only 8 to 10 weeks from starting seeds to harvest. The plants grow fast, short, and bushy, which lends to their ease of growth indoors under LED grow lights. Blueberry Auto flowers turn blue and purple colors when temperatures drop. The effects of Blueberry Auto are comforting and sedative. 20% THC.
| Flowering Time | 8–10 weeks |
|---|---|
| Brand | Homegrown |
| Pack Size | 4/8/12/24 seeds |
| Yield | 16 oz/m2 |
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Critical Orange Punch Auto
Overview: Critical Orange Punch Auto is a balanced hybrid autoflower strain that grows THC-rich buds with intensely fruity aromas and flavors. These fast-growing autoflowers produce XXL quantities of heavy buds on the double. Critical Orange Punch Auto is a very forgiving plant to grow indoors and suitable for any cultivation method. 15–20% THC.
| Flowering Time | 8 weeks |
|---|---|
| Brand | Dutch Passion |
| Pack Size | 1/3/7 seeds |
| Yield | High |
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Purple Lemonade Auto
Overview: Purple Lemonade Auto is an autoflower marijuana strain that bears giant purple buds with a citrusy smell and taste similar to lemonade. This popular autoflower is an excellent choice for novice indoor growers. Purple Lemonade Auto feminized seeds become fast-growing, roughly 3-foot tall plants effortlessly grown indoors with the right nutrients. The effects of Purple Lemonade Auto are uplifting yet relaxing. Up to 22% THC.
| Flowering Time | 9–10 weeks |
|---|---|
| Brand | Fast Buds |
| Pack Size | 1/3/5/10 seeds |
| Yield | 400–500 g/m2 |
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Runtz XL Auto
Overview: Runtz XL Auto is an autoflower version of the renowned Runtz weed strain with improved yield. This extra large autoflower develops sweet, candy-like buds in just 8 weeks from the appearance of its first leaves. Runtz XL Auto seeds grow into plants 2–4 feet in height and are suitable for cultivation indoors and out. The effects of Runtz XL Auto are both heady and stoney. 17–25% THC.
| Flowering Time | 8 weeks |
|---|---|
| Brand | Sweet Seeds |
| Pack Size | 3/5 seeds |
| Yield | 400–550 g/m2 |
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White Widow Auto
Overview: White Widow Auto is an autoflowering version of the legendary White Widow weed strain. White Widow Auto has frosty buds nearly white with trichomes that deliver fast-acting, hard-hitting effects. White Widow Auto feminized seeds are a superb choice for indoor growing. The plants stay easily managed at 2–4 feet tall over their 11-week life cycle. Cheap seeds in bulk. 15–20% THC.
| Flowering Time | 11 weeks |
|---|---|
| Brand | Seedsman |
| Pack Size | 1–100 seeds |
| Yield | Up to 125 g/plant |
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Black Jack Auto
Overview: Black Jack Auto is an autoflowering version of the Black Jack cannabis strain—a cross between Black Domina and Jack Herer. This fast-maturing autoflower takes only nine weeks to grow from seed. Black Jack Auto plants grow short and bushy and perform at their best when cultivated indoors in a hydro setup or SCROG with soil. Its dense buds are encrusted with sticky trichomes and provide strong yet balanced effects. Up to 23%.
| Flowering Time | 9 weeks |
|---|---|
| Brand | Homegrown |
| Pack Size | 4/8/12/24 seeds |
| Yield | 14–19 oz/m2 |
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