Best Time To Plant Cannabis Seeds

There's still time left to grow cannabis outdoors. Check out this post and find out all the possibilities depending on the strain. Buy Cannabis Seeds – Trying to find out the best time to plant Marijuana seeds outdoors? Here's more information – Amsterdam Seed Supply

There’s Still Time to Plant Cannabis Outdoors

In the Northern Hemisphere, from May to June, you might be asking yourself if there’s still time to plant cannabis outdoors. In this post we’re going to analyse the behaviour of different types of cannabis towards the end of the season, proving that the answer is yes; you’re still in time to plant cannabis!

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When it comes to growing cannabis, you need to keep in mind that most cannabis plants need a specific photoperiod (light period) in order to grow and produce the flowers that we’re all after. This means that if you’re growing outdoors you’ll need to do so within the right season in order to obtain the best possible results.

When Does Cannabis Flower Outdoors?

As a general rule of thumb, the flowering period of photoperiodic cannabis plants starts once they begin to receive less light and more hours of darkness. This can be done indoors whenever you want by simply flipping your light schedule to 12h light and 12h dark. However, outdoors this happens naturally over summer at different moments depending on the latitude at which you grow your plant.

  • Photoperiodic cannabis plants: feminized or regular.
  • Automatic or autofloweringcannabis plants.
  • Fast version photoperiodic plants.

Photoperiodic Strains

Photoperiodic cannabis plants are strains that depend on the amount of light the receive in order to flower. From germination, and during the first few weeks, these plants only spend energy on growing. Once they’re adults, they’ll keep growing until daylight is reduced enough to cause flowering. Photoperiodic cannabis plants can be both feminized and regular. Jamaican Dream is a fast flowering photoperiodic cannabis plant, ideal for late germination.

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Autoflowering or Automatic Cannabis Strains

Autoflowering cannabis strains come from crossing a photoperiodic strain with cannabis plants that contain Ruderalis genes. Ruderalis is a strain from the Caucasus and they’re used to growing and flowering under 18h of light during the short Siberian summers.

Thanks to the ruderalis genes, autoflowering plants start flowering regardless of the amount they receive. This type of strain will start to flower between the third and fifth week of growing, depending on the strain. Autoflowering plants that flower sooner tend to grow smaller and produce less yield.

Fast Version Strains

These strains come from photoperiodic strains that have been crossed with autoflowering strains. The resulting plants are still photoperiodic, although they finish flowering up to two weeks before normal strains; these strains aren’t autoflowering but they do have a much shorter flowering period.

Some seed banks sell these types of seeds under different names like F1 fast Version, Fast Flowering, Early Version and Quick, such as Jack 47 F1 Fast Version, Royal Cheese Fast Flowering, Quick Critical and Quick Gorilla.

Latest Time to Plant Cannabis Outdoors

During the summer, the days begin to get longer until the solstice. From June 21 – 24th in the Northern Hemisphere, the days will begin to get shorter by minutes each day. This won’t affect your plants growth until about a month later.

During the first few days of august, most cannabis strains will begin to flower, although this may vary depending on where you live.

Growing Photoperiodic Plants at the End of the Season

Photoperiodic plants need to grow first in order to flower properly. This means that the longer they’re growing for, the larger they’ll be when it comes time to flower, which makes for an overall better yield. If you germinate at the start of the season you can harvest large yields from enormous plants, although if you germinate towards the end of the season you’ll need to keep in mind that you’ll harvest less quantity per plant.

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Germinating photoperiodic plants in June

From June to August there’s two months for photoperiodic plants to grow before flowering. If you’re using large flowerpots (we recommend Smart Pot) or you grow in the soil, make sure to keep your plants stress-free (drought, excess water, root burn etc.) in order to grow decent-sized plants.

By following this method you’ll be able to harvest the same amount from two 2m tall plants as you would from one 4m tall plant. This is a great time to germinate sativas and tall hybrids in balconies, terraces or gardens in which you don’t want your plants to grow over 2.5 m tall. Cannabis plants in Smart Pot during the flowering period.

Germinating photoperiodic plants in July

If you germinate your cannabis plants during the first couple of weeks of July, they’ll grow for about a month before flowering. If you do it in the second half of July, they’ll reach the second half of august before they start flowering. These plants won’t be as tall as others that germinate at the start of the season, although you’ll still be able to harvest a decent amount per plant.

In the worst-case scenario, you may be held back a few days before harvesting, but that isn’t much of an issue. If you’re going to plant sativas and you don’t want them to grow too tall for whatever reason, June and July are the perfect months to germinate.

Germinating photoperiodic plants in August and September

Germinating during these months means that most strains will be ready to harvest in November. In areas with mild winters such as Mediterranean climates in Europe, you can easily grow a plant during these months. In this case, we recommend using fast-flowering plants in order to harvest much earlier.

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When To Plant Marijuana Seeds Outdoors?

You’re not the only one wondering when to plant Marijuana seeds outdoors. Although it is a question that doesn’t have only one answer. Depending on what part of the world you live, the ideal conditions to plant marijuana seeds outdoors would be in the spring, between March and May (in the northern hemisphere). Ideally, during this time, your marijuana seeds should already be germinated and you can even plant marijuana seedlings that are a few weeks old outdoors. As we have mentioned in our other guides, to plant marijuana seeds outdoors is a numbers game. The more marijuana seeds you plant outdoors (if you don’t have the experience) the better your germination rates and eventual harvest will be. For Northern hemisphere climate conditions we don’t recommend to plant marijuana seeds outdoors, rather germinate and start growing the marijuana plant indoors until the weather conditions are ideal to take the marijuana plant outdoors.

When to plant marijuana seeds outdoors depends on the weather where you live

If you live in a place that has a constant good weather then the season isn’t very important to take into consideration for you to plant marijuana seeds outdoors. In places with less abundant sunshine, the season would last roughly from March to August or September depending if it’s an Indica or a Sativa marijuana plant. In other regions such as equatorial or coastal regions, the issue of when to plant marijuana seeds outdoors is non-existent since the constant warmth and humidity will germinate the marijuana seeds outdoors without any worries of the conditions being too harsh for the seedlings, or not enough humidity and warmth for the marijuana seed.

You could also find our FAQ Submission How Germinate Cannabis Seeds? useful.