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How Long Do Autoflower Cannabis Seeds Take To Germinate

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If you’re ready to explore the world of autoflower cannabis growing and eager to know how long your seeds will take to germinate, then you’ve come to the right place! We’ll provide all the information you need to help you decide whether autoflowering cannabis is right for you. So sit back, relax, and let us take the mystery out of growing auto-flowering marijuana!

Understanding Autoflower Cannabis Seeds

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Autoflower cannabis seeds are a special strain of cannabis that is bred to flower independently of any light exposure. These cannabis plants begin flowering when the plant reaches a certain age, rather than depending on a decrease in the hours of daylight as other types of cannabis plants do. This means that these seeds are very popular with home growers because they do not need to watch the hours of daylight to control when their plants flower.

Factors Affecting Germination Time

When considering the time needed for autoflower cannabis seeds to germinate, we must look at a few different factors that can affect the speed. Light intensity and soil moisture will directly impact the rate at which your marihuana seeds begin to sprout, so it is important to provide optimal growing conditions right from the start.

Light intensity is one of the most important elements when it comes to autoflowering cannabis seed germination. These strains are known for their shorter flowering periods, so they require more intense lighting during their early stages of growth in order to promote quicker root development and stronger plants overall. To ensure successful germination, light intensity should be kept between 400-500 lumens per square foot during this phase.

In terms of moisture, these cannabis seeds need a good balance; not too wet and not too dry. Moisture levels should always remain slightly below the saturation point, never allowing any puddles or standing water around your plants; auto flowers thrive best in high humidity conditions of 70-80%. In addition, you may have to regulate soil temperatures as well: ideally between 21-27°C (68-80°F).

Best Practices for Germination

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When it comes to germination methods, there are a few options available to you. One option is a paper towel method which requires two layers of paper towels moistened with distilled or RO water and placed onto a plate or other suitable container. The idea behind this method is that the water will slowly be absorbed by the seed until they slowly crack open and begin sprouting into life. For these seeds, this process can take anywhere from 12-24 hours depending on the strain; however, once sprouted, they can finish their entire lifecycle in as little as 8 weeks!

Another option for germinating Autoflower cannabis seeds is doing so directly in soil or Coco coir mediums with temperatures around 77°F (25°C). This is often preferred because it eliminates an extra step and avoids potential risks such as over-drying or over-soaking the seed. Once placed into the soil/ medium and given enough water, you should expect to see sprouts within 48-72 hours after planting depending on seed viability.

Common Mistakes to Avoid

When you’re ready to begin germinating your autoflower cannabis seeds, it’s important that you take the time to make sure that everything is done right. Once you’ve chosen the right medium, temperature, and humidity levels, there are a few common mistakes to avoid in order for your seeds to have the best chance of germinating successfully.

One of the most important things to keep in mind is not to over- or under-water your seeds. You should also make sure that the medium is fine-milled enough so as not to damage delicate seedlings as they emerge from their hulls. Additionally, it’s important not to disturb or move the medium during germination; doing so can cause contact with oxygen that may hinder your seed’s successful maturation. In addition, light during this period must be carefully monitored; too much exposure can cause severe damage to developing plants and too little will create a dormant state where growth does not occur.

Finally, it’s essential for you to check the pH level of your chosen medium before planting. Since autoflower cannabis has specific pH requirements, checking this beforehand will ensure success when later transplanting into full-fledged soil beds. Autoflower cannabis seeds should see germination within three days of being placed in a moist substrate – with proper care and maintenance, your plants should have no problem sprouting up quickly so long as common mistakes have been avoided!

Benefits of Autoflower Cannabis Seeds

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Autoflower cannabis seeds are a type of cannabis seed that has been genetically engineered to flower based on age rather than light cycle. This means that these seeds will flower regardless of how many hours of light they receive each day. As such, these plants require less effort to grow than traditional types as there is no need to adjust lights or worry about seasonal changes in light.

In addition, since they can flower so quickly, it is possible for growers to produce multiple crops throughout the year with very little effort.

The other obvious advantage of auto flowers is their very short life cycles. While some traditional varieties may take up to 18 weeks or more before they are ready for harvest, autoflower varieties only take 8-9 weeks from sprouting to harvest time. This means that growers can get bigger yields out of a single crop with fewer hours spent tending the plants; thus allowing one more opportunity for profit from each batch produced.

These cannabis varieties also tend to be extremely hardy and resilient plants; making them perfect for novice growers who may not have had much experience in cultivating marijuana plants before. They are also easy on nutrient needs and require less maintenance; meaning that any beginner who has limited time to devote to their weed gardening efforts will have no issue growing successful harvests even with minimal effort!


The key to obtaining a successful harvest from autoflowering cannabis plants is providing them with the proper growing conditions to support their growth and development throughout the entire growth cycle. It is recommended to ensure your soil is well aerated, warm, and moist at all times during germination, as the ideal temperature range is generally anywhere between 21-30 degrees Celsius (70-86 Fahrenheit). Additionally, make sure that your autoflower plant is exposed to enough light each day in order to maximize its full potential yield at harvest time. Lastly, always provide additional nutrients as needed throughout its lifecycle to ensure a healthy crop come harvest time!