Cannabis Autoflower Seeds Outdoor


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Unlike other types of marijuana, autoflowers have a sort of internal clock that means they will enter the flowering phase no matter what. Award winning marijuana seeds with worldwide delivery and 100% discrete marijuana seeds shipping Read on and discover how to grow autoflowering cannabis seeds outdoors in order to make the most of your auto yield.

How to Grow Autoflowers Outside

Not everyone gets the luxury of growing autoflowers outside. If you live in a legal state, take advantage of this opportunity! With a little help, you can grow loads of buds .

If you want to learn about growing autoflowers outdoors, we’ve got everything you need in this article.

Considerations Before Planting Autoflowers

Growing autoflowers outdoors is relatively easy—they don’t need light to flower! For the most part, they can grow year-round as long as you provide them with the right nutrients and protect them from rain and pests.

Here’s what to consider before planting:

Indoor vs. outdoor

Growing autoflowers indoors and outdoors both have their pros and cons. The three major factors are cost, smell, and your environment.

Growing outdoors is the most cost-effective by far, but growing indoors offers more privacy and control of your crop—at a much greater cost. Therefore, many beginner growers opt for outdoors to save on startup costs.

Indoor pros & cons
  • You get complete control over your growing environment.
  • You can grow all year long.
  • Growing indoors has high startup costs.
  • Pests and diseases can spread to your plant quickly.
Outdoor pros & cons
  • It’s an inexpensive way to grow autoflowers.
  • Natural sunlight lets the plant grow to its full potential.
  • You have little to no control over the environment.
  • Your plants can get exposed to bad weather, pests, and bugs.

Growing outdoors means you don’t need to spend much money other than on pots and soil nutrients . However, since you can’t control the climate , severe conditions can affect your auto-flowering plant’s growth. Your plants will also be visible and produce a strong odor on your property.

Mold & Pests

Outdoor growing also comes with bugs and pests. Your plants will get exposed directly to the environment, so you need to watch for high humidity, extreme temperatures, and rainfall. These elements can attract mold and bugs to your plants with the right combination, which can be a challenge to handle.

Plant Protection

You’ll need to protect your plants from predators and harsh weather . Outdoor plants can get attacked by pests or even larger animals like rodents, cats, and dogs. You might need to install a wire fence around your autoflowers to protect them.

Ideally, the fence would be both underground and above ground to protect your plants from animals like moles and gophers getting to its root system—they can eat your entire plant overnight!

You might also want to build a structure to protect your autoflowers from rain and snow, which can be as simple as using a plastic sheet and wooden stakes to add a layer of protection. This structure helps ensure that your plants won’t freeze or attract mold.

Growing Autoflowers Outside: Beginner Tips

If you have never grown autoflowers or cannabis before, you’ll need to know a few things. Depending on where you live, you’ll want your growing space to be discreet, meaning that your neighbors shouldn’t see or smell the plants. If you’re using any grow light fixtures, you’ll need to understand that they are extremely bright, and others can see them from afar—make sure that no light leaks! Masking the smell when growing outdoors can be tricky.

Many people “guerilla grow” on their balconies by camouflaging their autoflowers with other aromatic plants. While it doesn’t guarantee your neighbors won’t smell your cannabis plants , it usually works quite well. You can train your plants, but the best way to avoid having issues is by growing Indica-dominant strains—they typically grow shorter and compact, so you don’t have to worry about training if you don’t know how to (or don’t want to).

If you plan to grow a specific strain, you’ll want to either train them or grow them in small pots so people walking by can’t see them. Even in legal states, you don’t want your plants to be visible to the point where they might get stolen.

Starting indoors

When you grow outdoor marijuana plants, y ou’ll want to grow them in a predictable, safe environment. Since the elements outside are not always predictable, starting your baby plants indoors is the best way to go. Young marijuana plants – whether they’re autoflowers or the more regular photosensitive plants – are alwa y s vulnerable in their first stages . This is especially true when going from a seed to a young seedling. Gardeners who coddle their baby plants a little bit are usually better off later in their plants’ lifetimes as well. G iving your grow season a healthy start is the best way to ensure you grow healthy plants that produce plenty of weed in the end.


It starts with germination . This is when the little plants pop out of their shells when given a bit of water. Germinating autoflower seeds is the same process as germinating other kinds of seeds. The differences come a little bit later. There are a few methods for germinating your seeds. You can put the seed directly in the soil, you can soak it in water until it cracks open, you can use a wet paper towel or cotton pad to do the job, or you can soak your seed in water then plant it in a peat moss jiffy pellet, which is the method we recommend.

The soil germination method

This low-maintenance method keeps the roots protected from the very start. Simply make a small hole in the soil with a pencil, put the seed in the hole, and cover it over. Get the soil moist by spraying it with water, and keep the temperature at 72 degrees Fahrenheit. Keep the soil moist, and in less than a week , you should see some green popping up out.

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The water method

Drop your seeds into water and leave them there. Let them remain for 24-48 hours , lo ng enough for the roots to start showing . This should take less than a week for the whole process overall. The water should be 65 degrees Fahrenheit and kept relatively fresh by changing it every other day or so . You can plant the seeds whenever you like after they’ve cracked open , just make sure to continue to keep the soil moist (but not wet), especially if you plant them on the earlier side. Be sure not to touch any exposed root tips with bare hands. Use a clean spoon to relocate and plant the seed. This method is riskier because fragile root tips can get damaged, and seeds can become water logged and drown if left in water too long.

The paper towel or cotton pad germination method

G rab either two cotton pads or a paper towel and place some of your seeds (if you have more than one) into it (or between the two cotton pads) . S pray the towel or cotton pads with water so that they are moist. Make sure the temperature is always at about 72 degrees Fahrenheit and stick the seeds and their wrappings under a n upside-down bow l. You could also place them between two plates, or inside a Ziploc bag. The seeds will crack open in a few days, and you can then plant them in the soil. Be careful not to tear or damage root tips that may extend, as they can sometimes entangle in the paper or cotton fibers.

Soaking and planting in peat moss jiffy pellet

This is the method we recommend for customers at a Pot for Pot. Soak your seed in a glass of neutral pH (or bottled) water for 12-24 hours, but do not exceed 24 hours. If a root tip pops out, do not touch it with bare hands. Instead, use a clean spoon to move your seed. After soaking your seed, expand your jiffy pellet by soaking it in neutral pH (or bottled) water for about 10-15 minutes or until fully expanded. Drain excess water, then plant your soaked seed about one knuckle (1 cm) down into the pellet, being sure to cover it with pellet soil so the seed is in darkness. Keep your pellet moist but not wet, give it 2-7 days, and you should see green sprouting above the surface.

Hardening off

Since you’re planning to grow your autoflower plant(s) outside, it’s a good idea to get the plant gradually used to the outdoor conditions without shocking it. This is best done if the temperature outside is consistently warm enough (always above 40 degrees Fahrenheit), and it can take just a few days. Start by keeping your plant outside for just 3 hours, and make sure that outside spot isn’t too exposed. Gradually increase the amount of time, day by day, until you have reached 24 hours. At that point , your plant will be ready for constant exposure to the elements without getting a shock that could affect its health and yield.

When to plant autoflowers ? Any time!

The beauty of autoflowers is the fact that they don’t depend on specific amounts of light to grow properly. Unlike other types of marijuana, autoflowers have a sort of internal clock that means they will enter the flowering phase no matter what. Photosensitive plants, on the other hand, need a certain number of hours of light and darkness per day to “know” that the seasons are changing and it’s time to start flowering. This is why autoflowers can be grown just about any time of year – they don’t need that natural cue to flower.


Our range of autoflowering outdoor seeds allows you to combine the benefits of ruderalis genetics with strains that simply love the great outdoors. Most varieties of cannabis simply need the outdoors to reach their potential, with the natural light and fresh soil helping them grow vigorously and naturally. The term ‘autoflowering’ indicates that the strain has a parent of the ruderalis variety, which means that the plant will have a few qualities rarely found in photoperiod strains. The main difference being that autoflowering strains can grow regardless of how much light they get. This makes them ideal starting strains for beginners and new medical growers. Autoflowers have a greater resistance to diseases and pests which is an advantage to plants that grow outdoors. They also have a far greater tolerance for lower temperatures and harvest quicker than most photoperiod strains. Small in size, autolfowers grow up to 1 metre on average, allowing for multiple grows and ability to maximise your harvests. What more could you want?

How to Grow Autoflowering Cannabis Seeds Outdoors

Growing autoflowering cannabis seeds outdoors is becoming more and more common thanks to its fast results and multiple harvests a year. Keep reading if you want to discover how to plant autoflowering seeds outdoors and get the best result possible.

Table of Contents

Autoflowering cannabis seeds or automatic seeds are obtained when light-dependent cannabis plants are crossed with Ruderalis strains. Growing auto seeds is a specific job, and you’ll need to understand where they come from and how to grow autoflowering cannabis seeds if you want to make the most out of them.

Ruderalis Cannabis is a subspecies of hemp that grows originally in colder areas such as Eastern Europe, Central Asia and other areas with climates that aren’t right for normal cannabis. It’s known for its small stature, and low RHC content, although its mainly known for flowering automatically, regardless of the amount of light they receive.

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When crossing these plants with normal ones, autoflowering seeds are obtained, which generally start flowering towards the second/fourth growth week, regardless of the amount of light they receive. These plants have similar qualities to light-dependent plants, such as a larger amount of THC, yield and aroma and flavour (compared to Ruderalis).

This is why, among other reasons that we’ll delve into later (such as discretion), many seed banks, breeders and genetic experts have worked hard on creating autoflowering seeds.

Reasons to Grow Autoflowering Cannabis Strains

Autoflowering cannabis plants have taken the world by force, especially in outdoor grows due to how fast it grows.

Growing autoflowering cannabis seeds has become more than just a fad over the last few years, although before you get started you should know the pros and cons on autoflowering seeds in order to make the most of your plants. Autoflowering cannabis plant during the flowering stage.

Pros of Growing Autoflowering Cannabis Strains

  • Autoflowering cannabis strains offer outdoor growers the ability to grow plants easily and rapidly. They also allow you to grow additional autoflowering strains while your normal plants grow and begin flowering. For example, if you’re planting autoflowering strains at the start of the season, you’ll be able to harvest 3 times during the Spring – Summer seasons before your feminized strains are ready to harvest.
  • Thanks to their small size (max around a meter tall), they’re discreet and ideal for growing on balconies or terraces, as well as small indoor areas with not much room.
  • If your climate allows (minimum temperatures above 10°C), you can grow all year round outdoors.
    Thanks to their short, fast growth stage, they aren’t as exposed to insect infestations.
  • They’re sturdier when it comes to the cold, although they prefer mild climates.

Cons of Growing Autoflowering Cannabis Strains

  • In indoor grows, you can plant fast flowering light-dependent strains and end up with the same total growing time of autoflowering cannabis plants, with higher quality and larger yields than autoflowering plants.
  • Autoflowering plants can’t be used to take cuttings or keep mother plants.
  • Autoflowering plants contain less cannabinoids than their light-dependent versions; Budha Critical, for example, has more cannabinoids than its autoflowering version Budha Auto Critical.

Here at La Huerta Grow Shop we recommend growing autoflowering seeds outdoors or indoors when there’s not much space, keeping in mind when it’s best to grow each type of strain. In this post, we’ll explain how to grow autoflowering cannabis seeds outdoors so that you can get the best possible results.

How to Grow Autoflowering Seeds Outdoors

As we were saying earlier, autoflowering cannabis seeds always come from seeds and can’t be obtained from clones. Autoflowering plants can vary in size depending on their genetics and the conditions they’re grown in, especially during the growth stage.

Factors to keep in mind when planting autoflowering seeds

  • They have quite a short growth period (2-4 weeks approx.) so by using fertilized substrates such as All Mix by Biobizz, you can cover their entire growth period and the start of the flowering stage. You only need to use rooting stimulants and/or mycorrhizae and Trichoderma during the growth stage. If you’re going to use light or inert substrates you’ll also need to use an NPK fertilizer.
  • They don’t grow as much as light-dependent strains during their flowering stretch, so you shouldn’t need to train them.
  • Due to their short growing process, you’ll need to feed them carefully, making sure not to overfertilize your plants and avoid ending up with excess nutrients in your plants.
  • If your plants’ roots end up facing obstacles, they’ll stoping growth and your plant will also stop growing. You’ll need to give them and airedsubstrate, or a coco coir substrate so that their roots can grow plenty.

There are many different methods when it comes to growing autoflowering cannabis; let’s have a look at some recommendations that you can use.

Germinating autoflowering seeds

We highly recommend germinating your seeds before planting them; you can find more information regarding germination in our post on how to germinate cannabis seeds.

Choosing the right substrate for autoflowering plants

As we were saying earlier, choosing the right substrate is incredibly important when it comes to growing autoflowering seeds. Autoflowering strains have a very short growth period; you’ll need to give them the right type of care to make sure that they grow fast and produce decent yields. The first thing you’ll need to give your plants is a decent, airy, and high-quality substrate.

Soil usually contains coco coir fiber, although you can add more (around 30-50%), in order to add more air to the substrate. You can use, for example, a fertilized medium such as Kilomix by Atami and add in some coco coir bricks.

You can also use coco coir as a medium to grow in but you’ll need to keep in mind that it’s inert, which means that you’ll need to water from the start of the growing period onwards. Autoflowering cannabis plant grown in coco coir.

Planting autoflowering seeds

Once your autoflowering seeds are germinated, the best option is to plant them straight into their final flowerpot. Transplants can stress your plants out and slow down their growth, which is the last thing you want to do with plants as fast as autoflowering plants – they don’t have that kind of time.

Autoflowering plants have such a short growth period that you’ll need to avoid any type of extra stress. This allows the plant to grow much faster and manage to grow much larger before it start flowering.

We recommend using root stimulants such as the highly concentrated Rootfast or the famous Rhizotonic from the moment that you plant your autoflowering seeds and all through the growth stage, as it’ll contribute to the growth and stability of the plant. You can also use mycorrhizae and Trichoderma to protect the plants’ roots and improve nutrient absorption.

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Autoflowering Growth Stage

Autoflowering plants’ growth stage will depend on their genetics; it’s very rarely over 6 weeks, and it’s usually somewhere between 2 and 4 weeks. Keep in mind that roots grow during this stage, and they’re necessary for the plant to be able to absorb nutrients and for them to be able to grow correctly and quickly.

Essential Care for Growing Cannabis Outdoors

Discover the essential care needed to grow cannabis outdoors, from the first growth stages; do you know the dangers?

When growing in soil you should be able to start fertilizing once the soil has used up all of its nutrients; until then you should only be using products such as root stimulants in order to increase root growth, growth stimulants such as Green Explosion by Top Crop, and even metabolism stimulants such as Liquid Karma by Botanicare, which contains humic and fulvic acids, as well as carbohydrates etc.

You can use growth fertilizers such as NPK fertilizers, like Bio Vega by Canna, which is specifically designed for the growth period, or NPK fertilizers designed for the entire growth period such as Autoflowering Supermix by Bio Nova.

If you grow in coco coir substrates you’ll need to fertilize in low amounts (1/3rd of the recommended amount) during the first few weeks, or use specific coco coir fertilizers until the plant is a bit more mature. After the first 2-3 weeks you can use start using the manufacturer’s recommended dose without damaging your plants.

Just like light-dependent plants, autoflowering plants grow faster with small cycles of moisture and drought – if their substrate is constantly moist the roots won’t grow out in search of water, which means the plant won’t be able to grow quite as much. This is why it’s better to water depending on the substrate, keeping it airy and allowing the roots to grow more.

Autoflowering Flowering Stage

Autoflowering cannabis plants usually begin to flower after around 2-4 weeks of growth. Once they begin to show the first signs of flowering (groups of little pistils around the plant), you can start using flowering NPK fertilizers such as Bio Flores by Canna, or the mineral Terra Bloom by Plagron, alongside a booster or flowering stimulant such as Delta 9 by Cannabiogen. Autoflowering cannabis plant during the first flowering weeks.

After the 3rd – 4th flowering week you can start using bud fatteners with high PK contents, such as Bio Bloombastic by Atami or PK 13 14 by Canna, allowing you to increase the size and weight of your cannabis flowers, as well as other additives such as Top Candy, which increases aroma and bud density.

We also highly recommend using enzymes during this period, especially if you’re using tap water or an intense feeding schedule.

Autoflowering Maturation

Just like with light-dependent cannabis plants, you’ll need to wash your plants’ roots out around 10 days before harvesting. This allows your plants to remove all of the leftover salts in their substrate and metabolize any leftover nutrients in the plant itself.

Make sure to pay attention to the flowering or growth stages that the seed bank has indicated and the state of your buds.

Root flushing is done in the exact same way as it is with other plants; water without nutrients in order to drain out as many nutrients as possible. You can also use flushing and cleaning products to decompose and dissolve any leftover minerals and salts so that you don’t have to use as much water.

Check your water’s EC levels after it has drained out of the bottom. This way you can get a general idea of the kind of flush your plants need; if it’s over 2 you’ll need a cleaning product such as Canna Flush.

If you need more information regarding flushing your plants roots you can visit our post on how to fertilize your cannabis plants.

Harvesting Autoflowering Plants

Autoflowering cannabis plants tend to have much less cannabinoids than light-dependent strains. You can still enjoy some intense effects from auto plants, and average effects from most strains – this isn’t the same as the softer effects produced by CBD-rich strains, for example.

In order to make the most and get the most intense effects from your plants, you’ll need to harvest at just the right time. Autoflowering cannabis plant maturing.


  • Plant autoflowering plants if you have a small growingarea such as a small balcony, guaranteeing that they won’t get too big.
  • Make sure to give them the right conditions during the growth stage. If they don’t make the most of their growth stage they’ll end up stunted and with little yield.
  • If you grow indoors and you have enough space, we recommend doing so with light-dependent fast floweringfeminized seeds such as Jamaican Dream, Critical King or Gorilla Candy, which provide higher yield and quality in the same time (two and a half months.)
  • Plant autoflowering strains at the start of the season (Spring), at the start of summer, and halfway through summer while your light-dependent strains grow and then flower; ths way you’ll get a couple of harvests in before the big one.

Let us know below how your autoflowering plants are doing or if you have any questions – our team of professionals are here to help!

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