Best Marijuana Seeds To Grow Indoors

Cultivation of cannabis with indoor seeds gives a grower control over the crop. You can micromanage every step of the plant's life cycle. The best strains for indoor growing are usually short, stout plants that finish early. Check out Leafly's favorite strains to grow indoors. Almost any cannabis strain can be grown indoors or outdoors, but some have characteristics that lend themselves better to one or the other.

Indoor Seeds

Cultivation of cannabis with indoor seeds gives a grower control over the crop. You can micromanage every step of the plant’s life cycle. An indoor setting allows you to control the plants’ feeding, lighting schedule, temperature, humidity, and other crucial factors for your indoor seeds’ optimum growth. Suppose you want to plant indoor seeds, this guide offers you all the information about growing marijuana indoors. We also provide a list of the best indoor seeds for indoor growth.

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Indoor Seeds

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Table of content

What Are Indoor Cannabis Seeds?

Although all cannabis strains can be cultivated in an indoor setting, some seeds are specifically meant to be cultivated in an indoor environment. Indoor cannabis seeds are sensitive to change in the climate and prefer to be in a controlled room.

Why Should You Grow Indoor Marijuana Seeds?

If you are starting, you may ask yourself, what are the benefits of growing indoor seeds? And how indoor cultivation impacts your plants? Are they better than outdoor seeds? Are they the highest THC seeds in the market? Your response to these questions depends on the indoor strain you choose to cultivate. Indoor seeds have a few advantages over outdoor seeds. Below, we explore the benefits and cons of using indoor seeds.

Pros of Indoor Seeds

    Control Over the Environment
    The good thing about growing indoor seeds is the ability to control their growth conditions, such as temperature, humidity, water, nutrients, lighting, and airflow. It allows you that your plants grow under optimal conditions, which translates to better and higher yields.

Cons of Indoor Seeds

    Tiring, Time-Consuming, and Expensive
    Setting the grow room is a lot of work and requires a substantial investment because you need to purchase the grow kit, form the tents, lights, pots, air conditioning system, and grow medium. You may also need to hire professionals because doing a DIY setup may lead to some setbacks, affecting yields and quality of your indoor marijuana.

Tools and Equipment Used in Growing Indoor Cannabis Seeds

Suppose you want to grow indoor marijuana from the indoor seeds, you will need:

  • Grow room/grow tent
  • Growing lights
  • Air conditioning
  • Fans
  • Filters
  • Thermometer and hygrometer
  • pH test kits for test soil pH
  • LUX Meter for measuring and optimizing light in the grow room
  • Timer for automating light cycle
  • String/gardening wire for training your plants
  • Containers such as fabric pots for growing your plants
  • Seedling starter kit

Best Places for Growing Indoor Seeds

Now that you have all the equipment needed to grow your weed seed indoors, you need to choose the best place to grow your indoor cannabis seeds. These places include:

  • The basement
  • Garage
  • Attic
  • Grow box
  • Closet, or
  • Build a grow room

Choosing a Growing Medium for Indoor Seeds

When growing indoor marijuana seeds, you can use either soil or hydroponics as the growing medium. Soil is the most straightforward growing medium used by most cannabis growers, especially beginners. You can either buy the soil mix or create your own.

Hydroponic uses water or another soilless substrate, such as coco coir or pear as the growing medium. In this method, plants are fed with nutrients directly into the roots, giving the total grower control over the nutrient intake. This method is ideal for experienced growers and leads to improved yields.

Choosing Indoor Seeds

There are many weed seeds for indoor growing for sale, therefore, growers need to select quality indoor weed seeds. Discussed below are the 10 best marijuana seeds for indoor growing:

Sour Diesel

Sour Diesel is a well-known strain from the Diesel family that is highly potent. It is a cross between Chemdawg and Super Skunk. This strain is not recommended for beginner growers and prefers dry and warm climates. However, know how to control powdery mildew since Sour Diesel is susceptible. Therefore, it is recommended that you cultivate this cannabis strain indoors.

Sour Diesel indoor marijuana seeds grow into tall plants that can be monstrous if not trained. The strain’s flowering time lasts from 9 to 10 weeks, with 1.5 – 1.6 oz/ft² (450 – 500 g/m²) yield when it is grown indoor.

Hellfire OG

Hellfire OG is a perfectly balanced hybrid strain that gives a couch locking high. This strain was created by mixing Rascal’s OG Kush and SFV OG Kush. Hellfire OG boasts a THC content of 28 to 30% and has potent euphoric effects. Hellfire OG indoor weed seeds grow up to 7 feet (2 meters) high with compact and dense buds. Hellfire OG flowering time lasts 55 – 65 days with high yields of 1.3 – 1.6 oz/ft² (400 – 500 g/m²).

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Granddaddy Purple

Granddaddy Purple is a beautiful purple colored strain that is a cross between Big Bud and Purple Uncle. These are top-shelf seeds that are highly sought after by both novice and veteran growers. Granddaddy Purple seeds give perfect weed plants for growing indoors because their height reaches up to 3.5 feet (100 cm) with a flowering time of 9 – 10 weeks. The strain’s buds are thick and dense with a layer of rich THC (15 – 19 %) trichomes. You can expect to reap high indoor yields of 1.3 – 1.6 oz/ft² (400 – 500 g/m²).

Chocolate Thai

Chocolate Thai is a 100% Sativa strain from Dutch Flowers. Like its name, the strain was first discovered in Thailand. This cannabis strain delivers an energizing, mind-clearing high. Though it has a low THC content of 10 to 15 %, users love this strain because of its creamy chocolate taste and delicious high that does not leave you couch-locked.

Chocolate Thai is a pretty tricky indoor weed seed to cultivate, and they are best left for expert growers who have the patience of waiting out their long flowering period and low yield. Suppose you are in a cold climate, it’s best to cultivate this weed seed indoors because it thrives in a warm and dry environment.

Wedding Cake

Wedding Cake indoor cannabis seeds are Indica dominant. The seeds grow into a short and sturdy plant that thrives in various environmental conditions. These are high THC seeds with a THC content of 17 – 23 % and delivers a long-lasting and cheerful high. Wedding Cake strain flowering period lasts for around 65 days and produces decent yields of about 1.5 – 1.6 oz/ft² (450 – 500 g/m²). This strain is moderate to cultivate but is naturally resistant to various diseases and pests.

Blue Dream

Blue Dream is a Sativa dominant strain that is highly sought after in America. This strain packs quite a punch as its THC content ranges between 16 and 20%, with 2% CBD. Growing Blue Dream indoor marijuana seeds requires patience because it grows slowly as it needs time to branch out in its early stages. The plants are tall and can hit 6 feet (180 cm) with high and healthy yields. Blue Dream is a favorite of mites, pests, mold and mildew; therefore, growing it indoor helps control humidity, facilitating the infestation.

Purple Kush Autoflower

Purple Kush Autoflower is a popular cannabis strain among cannabis lovers who love smoking this strain because of its potent high. It is got by crossing Hindu Kush and Purple Afghani.

It is straightforward to grow Purple Kush Autoflower weed seed indoors because it grows into hardy, medium-sized plants. This beautiful strain improves your garden aesthetics with its purple hues and unique aroma. Purple Kush flowering period lasts 56 – 63 days with a pretty decent yield of 1 oz/ft² (300 g/m²) when it is grown indoor.

Strawberry Cough

Strawberry Cough is a hybrid strain whose origin is marred by a lot of myths. Just like its name, expect your field to smell like strawberries. This Sativa dominant strain is pretty easy to cultivate and thrives in an indoor environment.

When you plant Strawberry Cough weed seeds indoors, the plants grow up to 3 feet (90 cm) and mature in 63 – 70 days. Strawberry Cough has sturdy branches to support the weight of the tight bud with a pine cone shape.

Legend OG

Legend OG is an Indica dominant strain with a woody and floral aroma. Although this strain does not have a well-documented origin, Legend OG was created by Swamp Boys Seeds. This is a high THC strain with THC ranging between 20 to 25%. It grows tall and is ideal for average growers and produces moderate yields.

Cement Shoes

If you want to cultivate potent indoor marijuana seeds, Cement Shoes is our best bet. Apart from a high THC content of 20 – 24 % and 1% CBD, this strain offers you a relaxed cerebral buzz and a heavy-bodied buzz that leaves you couch-locked. A three-way cross gets this strain between OG Kush, Animal Cookies 09, and Wet Dreams.

When you cultivate Cement Shoes weed seeds indoors, you get a 5 feet (150 cm) tall plant with a flowering period that lasts between 60 – 70 days. This Indica dominant strain produces high indoor yields of 1.3 to 1.6 oz/ft² (400 to 500 g/m²).

Indoor Seeds vs Outdoor Seeds, Which Is the Best?

Suppose you are new to marijuana and are wondering where to grow your indoor weed seeds. The seeds you choose to go with depends on your potential, the type of conditions it requires to thrive, and weather in your region. It is best to grow marijuana indoors because you can control your cannabis plant growth conditions. But with outdoor seeds, you have little to no control in case the weather changes.

Final Thoughts on Indoor Seeds

Indoor seeds are best when you live in a region where the weather often fluctuates, making it difficult for cannabis to thrive in an outdoor setting. If you are shopping for the indoor cannabis seed, look no further because we have a large selection of Indica and Sativa indoor seeds and this guide provides you with a list of the best marijuana seeds for growing indoors.

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Cannabis seeds are sold to customers over the age of 21 and are sold strictly for souvenirs or storage purposes only. The cultivation and germination of cannabis seeds is illegal in most countries. We advise customers to check the laws in their country before ordering.

Top 6 weed strains to grow indoors

New growers searching for the best strains to grow indoors need to look no further. Check out the top weed strains to grow inside.

By subject matter expert and editor: Pat Goggins

Indoor weed is famous for its high quality, and you can grow it anytime of year if you’ve got the right space for it. Grow tents and grow lights are cheap and easy to use, and you’ll cover the initial cost of investment quickly.

Which strains should you grow?

Some strains grow better in an indoor environment, while others do better outdoors. Indoor growers typically go for short, stout plants because they take up less space, which can be limited indoors.

Strains that finish quicker—meaning, a short flowering time—are also desired, to save money on your electricity bill. Indica strains typically fit this bill, while sativas and hybrids usually grow bigger and take longer to finish, but it really depends on the strain.

If you love a certain strain that takes 11 weeks to flower, go for it, but whichever strain you choose, check the breeder or seed bank’s information on it to get a sense of how it’ll grow.

Understanding autoflower strains and feminized seeds

Autoflower strains are a great option for growing indoors as they can go from seed to harvest in as little as three months. But, beware: the final buds might not be that potent.

Feminized seeds are also useful because they ensure every plant is a bud-producing female, which saves space in your indoor grow because you won’t have to grow males and get rid of them.

A lot of common, classic strains come in autoflower and feminized varieties.

With thousands of strains to choose from, here are six of our favorites that are great to grow indoors.

(Elysse Feigenblatt for Leafly)

Blue Dream

Some people roll their eyes when you mention the popular strain, Blue Dream, but it truly is a dream to grow. This classic hybrid of Haze and Blueberry grows to a moderate size, has an average flowering time, and doesn’t need much attention indoors.

Just be careful and make sure it gets plenty of airflow, so it doesn’t get mold. Blue Dream is known for its big yields, so get ready to have some of this strain with euphoric and creative effects in your stash for a while.

Zkittlez

With a sweet, tropical scent and purple accents, Zkittlez is a pleasure to have around your indoor garden.

Short in stature, with dense, chunky buds, this typical indica has won awards in the past and is perhaps most famous for parenting Runtz, 2020’s Strain of the Year at Leafly. Zkittlez is easy to grow and calming to smoke.

Bruce Banner

Bruce Banner is a great old-school strain that flowers quickly and packs a hefty, euphoric punch.

It’ll hulk out in your garden too—even though it’s short and bushy, it’s a high-yielder. Banner is easy for novice growers but recommended for experienced stoners for its potent potential.

Wedding Crasher

A newer favorite of ours, Wedding Crasher has a classy lineage: Wedding Cake and Purple Punch. This hybrid leans toward the indica side with Purple Punch in its roots and has short, dense buds with hints of purple.

Dessert strains are in right now, so finding seeds and clones of Wedding Crasher shouldn’t be too tough.

Banana Kush

Banana Kush is an underrated OG that’s beautiful to look at in your garden. In the right environment, you’ll get dark purple buds with a distinctively sweet, fruity scent.

Pests also love Banana, so be sure to keep it in a cool, dry climate.

Vanilla Frosting

Gelato descendant Vanilla Frosting is a unique, newer strain with a creamy vanilla flavor and a gassy finish.

It’s a hybrid that leans toward an indica, with dense buds, silvery-green leaves, and purple accents. It’s a high-yielder, perfect for growing indoors and for growers of all experience levels.

10 Best Cannabis Strains to Grow Indoors and Outdoors

Almost any strain can be grown indoors or outdoors, but some have characteristics that lend themselves better to one or the other. Kasey Craig gets you started in the right direction.

Depending on your cannabis growing goals and your location, choosing a marijuana plant based on its growing conditions makes sense. For example, you would want to keep a delicate plant indoors to prevent it from developing rot or to keep pests away. But, if it’s a tall and potent smelling plant, you’ll likely find growing it outdoors a better choice.

In the content below, we’ll look at five strains ideal for growing indoors. Then, we’ll discuss five strains that make sense to grow outdoors. After your research, you can make the best choice for you based on the weed garden you want to create.

Top 5 Cannabis Strains for Your Indoor Garden

If you live in a place with inclement weather, having an indoor cannabis garden makes the most sense. Or, if you live in an urban area, keeping your plants private could be ideal. After careful consideration, in our opinion, these are the top 5 strains to grow inside.

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Girl Scout Cookies

One of the most potent strains of cannabis, Girl Scout Cookies is an indica-dominant hybrid. Indoors, the plant produces flowers in nine to 10 weeks. While the yield isn’t the largest, the high is worth the effort.

Girl Scout Cookies will give you a short to medium height plant with sturdy branches. Plus, growing indoors gives you the option to drop the temperature. A cooler temp with these plants will provide you with a purple color and rich density buds with crystallization.

Girl Scout Cookies is very resistant to mildew and pests. This plant will grow well in hydroponics or soil. Most importantly, you’ll want a stress-free space for your plant to branch out. Unless you live in a Mediterranean climate, growing Girl Scout Cookies indoors is your best bet.

Afghan Kush

Pure indica, Afghan Kush loves a climate that mimics a European summer. The plant only takes around seven to eight weeks to flower, and you can expect a yield of about 16 ounces per 10 square feet when growing indoors. Also, Afghan Kush is highly resistant to molds, parasites, and pests. You can expect this to be easy to grow in soil or a hydroponic system.

Gorilla Glue #4

Gorilla Glue #4 can yield about 18 ounces for 10 square feet when grown indoors, and this strain only takes about eight to nine weeks to flower. The plants can grow in a warm sunny outside garden, but you can reap the benefits of a dank indoor harvest without risking them in outdoor conditions.

White Widow

White Widow is a sativa-dominant hybrid that is easy to grow and is a top pick for beginners. The plant reaches a medium height and can yield around 18 ounces per 10 square feet when grown indoors.

White Widow flowers in eight to nine weeks. While you can grow this plant outside, we recommend that you grow White Widow indoors in a controlled setting. You can grow in either soil or hydro, but a hydroponic setup will surpass your harvesting expectations.

Kandy Kush OG

Kandy Kush OG has a moderate to high yield with a flowering time between 65 to 75 days. The plant is mold-resistant and grows well in cooler climates. It’s a splendid blend of OG Kush and Trainwreck. When growing indoors, it’s best to use the Screen of Green (SCROG) method.

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Top 5 Cannabis Strains for Outdoor Growing

There are many reasons for growing cannabis outside. It’s more environmentally friendly, you can yield more buds, it’s much cheaper, and outdoor buds develop a distinct flavor. When looking to grow outdoors, you likely want a large plant that gives you a maximum yield. Below you’ll find the top 5 marijuana plants to grow outside.

Northern Lights

If you’re looking to grow a tree-sized cannabis plant, Northern Lights can grow more than 6.5 feet outdoors. The plant will thrive most in a sunny and warm environment. Like many strains, the Mediterranean climate is best for this plant to flourish.

Northern Lights is a hardy, pest-resistant plant that is pretty easy to grow. The strain takes about seven to nine weeks to flower.

Swazi Gold

Swazi Gold is pure sativa that may take 12 to 14 weeks to flower and has the ability to grow quite big. Aside from the high level of attention necessary to grow Swazi Gold, the sheer number of buds you can produce is worth all the love and effort. You can expect more than 25 ounces per plant!

Durban Poison

You need to grow Durban Poison outdoors if you want your plant to reach its full potential. The warm sunlight is ideal for your plant, and the being outside gives the plant room to spread its branches. You can expect your plant to tower to more than seven feet tall.

Durban Poison is resistant to pests and common molds.

Blue Dream

Perfect for cultivating outside, you can expect an impressive yield with little effort. Blue Dream is a true dream for growers in a subtropical or Mediterranean climate. You can expect more than 20 ounces per plant, and your plant could grow higher than 13 feet tall. Also, Blue Dream may be one of the easiest strains to grow outdoors, especially for novice growers.

Alaskan Thunder Fuck

Let’s face it, Alaskan Thunder Fuck is a pretty awesome strain name. Nothing will compare to growing Alaskan Thunder Fuck outside. The plant does well in a cooler northern climate and can produce a massive yield. When grown outdoors, you can get more than 30 ounces per plant. While this is a cold-weather strain, you’ll still want plenty of sun exposure and food to encourage healthy growth.

Also, if you grow this plant in a trench, it will help keep the roots warm. Flowering time is about nine to 10 weeks.

Keep in mind, you can grow any indoor strain outdoors, and you can grow outdoor strains indoors. You’ll want to make sure you have the right spacing, lighting, food, and watering needs for the plant you’ve chosen. With the internet available at our fingertips, you have the resources and information to try anything you want. Whether you’re an expert or novice grower, there is always something to learn about maximizing your yield.