Autoflower Seeds

Why Buy Autoflower Seeds From Auto Seeds?

Since 2008, we’ve focused exclusively on breeding autoflower cannabis genetics. While many seed banks divide their attention across photoperiod, feminized, regular, and autoflower varieties, we’ve spent nearly two decades refining one type of cannabis plant. That specialist focus has allowed us to continually improve the speed, potency, yield, and consistency of the genetics we offer today.

Every strain in our collection starts with our own breeding program. From selecting parent plants and making the initial cross to testing successive generations and stabilizing desirable traits, we oversee every stage of the process ourselves. We don’t source white-label genetics or simply repackage someone else’s work—we develop, grow, and refine our own autoflower strains before they’re made available to our customers.

Just as importantly, we continue to grow and evaluate our genetics long after they’re released. Watching how strains perform over multiple generations helps us identify where further improvements can be made, whether that’s increasing consistency, improving structure, or selecting for better resin production and overall performance.

When you order from Auto Seeds, you’re buying directly from the breeder. Every order is backed by our germination guarantee and dispatched from our New York facility, with most customers across the USA receiving their seeds within just a few days.

What Are Autoflower Seeds?

Autoflower seeds produce cannabis plants that flower automatically as they mature, without needing changes to the light cycle. Unlike traditional photoperiod strains, which rely on longer periods of darkness to trigger flowering, autoflowers switch from vegetative growth to flowering based on age alone.

The autoflowering trait originates from Cannabis ruderalis, a hardy cannabis subspecies that evolved in regions with short summers and long daylight hours. To survive these conditions, ruderalis developed the ability to flower automatically rather than waiting for seasonal changes.

Modern autoflowers are the result of breeders combining ruderalis with normal photoperiod cannabis genetics. The goal is to retain the automatic flowering trait so what you effectively have is a version of a normal cannabis plant that grows much faster, stays short and compact and flowers without light cycle adjustments.

At Auto Seeds, we’ve worked exclusively with autoflower genetics for more than 15 years and have seen first-hand how dramatically they have evolved. Early autoflowers were often small plants with modest yields and lower THC levels. Today’s best genetics are capable of producing dense, resin-covered flowers, impressive cannabinoid content, and harvests that rival many photoperiod varieties.

Why Choose Autoflower Seeds

Autoflower seeds have come a long way over the past two decades. Early autoflowers were valued mainly for their speed, but today’s genetics can deliver impressive yields, high THC levels, and resin production that rivals many photoperiod strains. In our experience, they offer one of the best combinations of simplicity, speed, and performance available to modern cannabis growers.

One of the biggest advantages is their ability to flower automatically. Unlike photoperiod plants, autoflowers don’t rely on changes to the light cycle, making them easier to grow indoors and more forgiving for beginners. Their compact size also makes them a great choice for smaller grow spaces, balconies, greenhouses, and discreet outdoor gardens.

Fast harvest times are another major benefit. Most autoflowers are ready to harvest in around 8–12 weeks from seed, allowing many growers to complete multiple harvests in a single outdoor season or keep a continuous indoor grow cycle throughout the year.

Modern autoflowers are also available for almost every growing goal. Whether you’re looking for high THC strains, high yielding genetics or beginner-friendly plants, there’s an autoflower to suit your setup and experience level.

Ultimately, the right choice comes down to what you want from your grow. If you’re looking for cannabis plants that are quick to finish, straightforward to grow, and capable of producing exceptional results, it’s easy to see why autoflower seeds have become the preferred choice for so many growers worldwide.

Autoflower Seeds vs Photoperiod Seeds: What’s The Difference?

If you’re deciding between autoflower and photoperiod cannabis seeds, this simple comparison highlights some of the key differences you should consider before choosing a strain.

Actual yields vary depending on genetics, lighting, pot size, environment, and grower experience.

Frequently Asked Questions About Autoflower Seeds

How long do autoflower seeds take to grow?

Most autoflower strains are ready to harvest in around 8-12 weeks from seed. Some of the fastest 45 day autoflowers can finish in as little as 6 weeks from flowering.

Are autoflower seeds suitable for beginners?

Yes. In fact, we often recommend autoflowers to first-time growers. They flower automatically, don’t require light cycle changes, and generally need less day-to-day management than photoperiod plants. Because of their small size they are easier to maintain indoors and are perfect if you want to just grow a few in a little tent.

Can autoflower seeds be grown outdoors?

Absolutely. We see excellent results outdoors from autoflowers every year. Their fast growth means they can often finish before poor weather arrives, which is one of the reasons they’re so popular with outdoor growers.

Timing is still important, though. Because autoflowers begin flowering automatically after just a few weeks of growth, it’s best to start them when days are getting longer and sunlight is at its strongest. This gives plants more time to build size before they enter the flowering stage.

Thanks to their Cannabis ruderalis heritage, autoflowers also tend to cope better with cooler temperatures than many photoperiod strains. While no cannabis plant enjoys frost, autoflowers are generally more resilient to less-than-perfect outdoor conditions, making them a great option for growers in shorter or less predictable growing seasons.

What are the benefits of autoflower seeds?

The biggest benefits are speed, simplicity, and size. Autoflowers flower automatically, finish quickly, and stay compact enough for smaller growing spaces. Modern genetics can also produce impressive yields and THC levels while being easier to manage than many photoperiod strains.

Do autoflower seeds need a specific light cycle?

No. Unlike photoperiod plants, autoflowers don’t rely on changes in daylight hours to begin flowering. Indoors, most growers run either 18/6, 20/4 and even 24 hour light cycles.

What are the highest yielding autoflower seeds?

We have a selection of high yielding autoflower seeds all of which yield over 500 grams per square meter of space. Our highest yielding strains are Auto Pounder and Juicy Lucy.