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photoperiod cannabis seeds

There are more nuanced differences to consider as well, such as the fact that autoflowering strains cannot typically be cloned, whereas photoperiod strains can. This means that if you choose to grow autos, you’re going to have to buy new seeds for every crop, which some people consider a waste of money when photoperiod plants can be cloned again and again, producing genetically identical plants every time.

The other main difference that needs to be taken into account when deciding which of these two varieties is right for you is the size of the plants, and the subsequent yields. Whilst it wouldn’t be true to say that autoflowering strains are necessarily smaller than photoperiod, it’s certainly the case more often than not, so if you’re looking to grow large plants and to harvest as much bud as possible, it’s usually recommended that you go for the more traditional, photoperiod strains.

As with most things, your decision to choose autoflowering or photoperiod strains will essentially come down to your own personal preference. As mentioned in our previous guide – 5 Tips for Choosing Cannabis Strains for Beginners – autos are often considered a good starting point for novice growers, thanks to their speed and ease of growth, and a great many first-time growers will choose this option to help them get their eye in. But there are plenty of autoflowering strains out there which can prove hugely rewarding to more experienced growers, too, just as there are more forgiving photoperiod strains that are perfect for beginners who need that extra vegging time in which to make their inevitable mistakes.

Northern Lights Auto Feminised Seeds

Well, the differences are really quite simple. Autoflowering strains have been bred in such a way that, after a plant has been growing for a certain amount of time, it will automatically begin to flower. This is in stark contrast to photoperiod plants, which rely on changes in light cycles in order to know when to flower, and which will stay in the vegetative stage of growth more or less indefinitely, until the light changes sufficiently to force them to flower – typically to a 12/12 cycle, i.e. 12 hours on, 12 hours off.

Linked to this is the time it takes to get from seed to useable harvest. Because autoflowering strains begin to flower earlier than their photoperiod counterparts, it naturally takes less time to get to harvest, and you will have your hands on the final product more quickly. But, again, you will more than likely have less of that final product to play with, so when making your decision you need to weigh up which is more important to you – speed, or yield.

When choosing a cannabis strain, it helps to know exactly what you’re looking for. There are plenty of variables, but one of the most important is whether your chosen strain is autoflowering or photoperiod. But what dies this mean? And how do you decide which is right for you?

With that in mind, we’ve produced this (hopefully) helpful table which you can use to weigh up the pros and cons of each variety before you make your choice.

Auto-Flowering Strains Characteristics

Let’s take a look at some of the things which separate the two subcategories of cannabis seed strains:

Disclaimer: It’s illegal to germinate cannabis seeds in many countries. It is our duty to inform you of this important fact and to urge you to obey all of your local laws. The Vault only ever sells or sends out seeds for souvenir, collection or novelty purposes.

About George Seeds

Let’s cut straight to the chase: A photoperiod is a measurement of the time cycle that cannabis plants are exposed to light each day. The measurement will typically include two numbers: The first refers to how long the plants are exposed to light and the second refers to how long the plants are allowed to rest in the dark, so, for example: An 18/6 cycle would mean that for 18 hours a day, the plants get exposed to light and for the remaining 6 hours, the lights go out and plants get kept in the dark, kind of like what would happen in nature when the sun rises and sets: Simple, right? Well, there is a bit more to it than that…

Photoperiod Strains Characteristics

Photoperiod vs Auto-Flowering strains

In the world of cannabis seeds, the term ‘Photoperiod’ frequently comes up – but what exactly does this term mean and what difference will it make to the seeds that you are thinking about adding to your collection?