If there is one variety responsible for the CBD movement, it is the Cannatonic. This unique hybrid cross (50% Indica and 50% Sativa) with lineage of the G13 Haze-man and the female MK Ultra is bred by the breeder Resin seeds. Specifically to create a strain with a high CBD content (12-19%) and a very low THC content (up to 6%).

Thanks to its medicinal effects, the strain has become very popular in a relatively short time and is even called the mother of the CBD. For CBD enthusiasts, a real must. Would you like to taste this beauty yourself and isn’t it possible to buy Cannatonic weed at your local dispensary? Check our reviews, buy these Cannatonic feminized seeds and grow your own Cannatonic plant.

Cannatonic grow info

The Cannatonic feminized seeds germinate easily and can be grown both indoors and outdoors (in a greenhouse). Especially with an indoor cultivation, the plant will develop in a healthy way and provide some serious yields. Although the strain isn’t extremely difficult to grow, some experience is recommended. The plant is more susceptible to fungus and should therefore preferably be grown in a controlled environment. In this way the plant can be exposed to the right temperatures and air flows.

Cannatonic strain flowering time and plant height

The size of the strain is pretty limited. However, the plant develops beautiful aromatic icy green buds with a dense structure, beautiful trichomes, extreme amounts of Cannabidiol, little leaves and delicious lemon scents during flowering. The flowering time is about 9 to 10 weeks after which the plant reaches a maximum height of one meter and is ready to be harvested.

Strain yield

The Cannatonic feminized seeds produce plants with interesting yields that won’t disappoint. Although many types of outdoor species produce more weed than indoors, this doesn't apply to the Cannatonic. With this strain it’s exactly the other way around. The maximum harvest indoors is between 400 - 500 grams per m2, while outdoor growers who harvest at the beginning of October can expect a maximum yield of 250 - 400 grams per m2.

Cannatonic growing tips

  • With a hydroponic setup the plants can better achieve the nutrients in order to produce high CBD levels.
  • The Cannatonic CBD strain needs sufficient space to develop in a healthy way. It’s therefore of great importance to keep a sufficient distance between the plants.
  • It’s advisable to prune the plant during the growth phase in order to promote the air flow between the plants.
  • Start with low nutrient levels and slowly increase after the first weeks of the vegetative phase.
  • Generally the plant develops better when the grow light is installed a bit higher than normal.

Cannatonic weed: taste and aroma

The smell of this weed is just amazing. Although the scents show woody (pine) and earthy notes, the Cannatonic weed with its soft citrus flavor is surprisingly sweet.

Smoke report: the weed effects

Cannatonic is an incredible strain with unique lab results and a great terpene profile. The test results show that the ratio THC / CBD is 1: 1 to 1: 2. As you can expect from such a CBD rich species, Cannatonic weed offers a long-lasting relaxed and euphoric experience. In particular, inexperienced smokers will experience a slightly brightening "head-high", but the effect is mainly focused on the physical parts of the body. This physical buzz is quickly noticeable and creates a strong calming feeling. Due to the very low THC content you don’t have to be afraid to become anxious or paranoia.

Medical uses and benefits

Cannatonic is particularly known for its medical benefits. The strain has released many people from migraine attacks and relieves chronic pain. A real "strain for pain". In addition, there are several cases where the user has indicated that their depression, epilepsy, fibromyalgia, anxiety, sleep problems (insomnia), nausea, OCS, OCD and even schizophrenia has been minimized.

Frequently asked questions

Do you also sell Cannatonic autoflowers?

Unfortunately, we currently do not sell Cannatonic auto seeds. If this changes, you can find these seeds in the category of autoflowers.

Is Cannatonic Indica or Sativa?

Cannatonic is a cross of the G13 Haze-man and the female MK Ultra Kush genetics. This makes the strain 50% Indica and 50% Sativa. 

When to harvest?

The best harvest time for the Cannatonic strain is between begin- and mid October. 

Can I buy these seeds online in your webshop?

Many customers worldwide are ordering our Cannatonic feminized seeds. So whether you live in Albuquerque, Amsterdam, Australia, Ann arbor, Boulder, Canada, Denver, Los Angeles, Las Vegas, Michigan, Ontario, Phoenix, Portland Oregon, San Diego, San Francisco, San Jose, Toronto, UK, the USA or another city / country we can ship the seeds to your address as long as the stock is available. 

Definition: What does Cannatonic mean?

Cannatonic refers to the disease Catatonia. This condition is characterized by changes in muscle tone or activity that are associated with a large number of serious mental and physical disorders.

Is the weed good for sleep?

The weed provides a physical rest. Therefore many people indicate that they can sleep better after smoking this weed or when they used the oil. 

Does Cannatonic get you high?

If you smoke the weed you will probably experience some brightness in your head due to the small amount of THC.  

Do you sell Cannatonic oil or edibles?

We are specialized in cannabis seeds like Cannatonic CBD feminized, not in oil extracts or edibles. Therefore we don't sell products other than seeds. 

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Cannatonic feminized seeds specifications

THC Level 3%
CBD Level 19%
Variety 50% Indica / 50% Sativa
Genetics G13 Haze x MK Ultra
Yield Indoor 400 to 500 grams/m2
Yield Outdoor 250 to 400 grams/m2
Height Indoor 60 to 100 cm
Height Outdoor 80 to 120 cm
Flowering Time 63 to 70 days
Fungal Resistance medium
Growersprofile moderate
Cultivation indoor, outdoor, greenhouse
Climate temparate, mediterranean, arid, tropical
Flavors citrus, earthy, lemon, sour, sweet, pine, woody
Effects calming, euphoric, focused, happy, relaxed
SOG suitable Yes
SCROG suitable Yes

Cannatonic feminized strain review

The latest reviews on Cannatonic feminized seeds, do you have experience with this strain? Share your experience with other customers and write a review about the Cannatonic feminized strain.

4.5 / 5 stars out of 11 reviews


  1. Rated 5 out of 5

    AAJ Stith

    I remember that i had a great chat with Frank who recommended me the Cannatonic. Had grown ACDC and Harlequin before so i can tell you…this strain certainly matches the quality of strains like Harlequin and ACDC.

  2. Rated 4 out of 5

    N. Brady

    I’m a Vet and in chronic pain but this purchased helped me a lot. Cannatonic is pretty easy to grow. Good yields but especially the effect is very good! The very low THC level is almost not noticeable ( i don’t like to be high) while the CBD ensures that my entire body relaxes and is painless. Gonna buy some more soon guys.

  3. Rated 5 out of 5


    What a great strain. The seeds where an excellent choice while the plant doesn’t grow that large so they where very suitable for my indoor grow. Ive been growing some great healthy plants and really, the weed is amazing. Besides the service at Weedseedsexpress is topnotch! High recommendable!

  4. Rated 4 out of 5

    James S. Hernandez

    Although breeding a quality CBD strain is generally more difficult, I am a big fan of high CBD strains. My favorites are ACDC, Charlotte’s Web and this Cannatonic. All these strains ensure a wonderfully relaxed effect, which is especially pleasant during the day and in the evening before I go to sleep.

  5. Rated 4 out of 5


    Good seeds and with the paper towel method i manged to germinate 18 out of 20 seeds, so I think that’s a pretty good score.

  6. Rated 4 out of 5

    L. Garcia

    Although these are good CBD seeds and I can recommend these seeds to anyone who wants to grow a CBD strain, my preference goes to the ACDC. Especially because AC DC possesses more Sativa properties.

  7. Rated 5 out of 5


    This was the first time I bought CBD seeds and bred a CBD strain, but I think I will never grow anything else anymore. What a beauty of a plant! It is a relatively small plant but certainly one of the nicest I have grown so far. Love to the great support team for WSE. It was a real pleasure buying your seeds.

  8. Rated 4 out of 5

    J. Younger

    High quality seeds and inexpensive prices. Moreover, the service here is very good. Because a seed did not germinate, I received an extra seed in my last order. Very attentive of customer service. See you guys soon!

  9. Rated 3 out of 5

    Joshua H.

    Although paying through the website was a bit cumbersome, I received the seeds in good order. Moreover, the communication was good and the employees are helpful. However, I have experienced problems with the germination of the seeds, but perhaps that is because I do this for the first time.

  10. Rated 4 out of 5

    R. Dugan

    As a medicinal user I had been looking for a strain for a while to use during the day, but because the range at the dispensary is limited, I decided to buy these seeds and grow my own plant. That may have been the best decision ever. The plant develops in a very natural way. Moreover, my weed is now 100% sure organic, the effect is amazing to my body en the taste is lovely citruslike.

  11. Rated 5 out of 5


    If you are looking for a high quality CBD strain, I can recommend these seeds. It’s by far the best CBD strain I have bred and smoked. The effect is so amazing. After a few hits I felt the pain in my body and the worries disappear from my head.

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Payment, shipping & delivery guarantee

What you can expect from us regarding payment, shipping and the delivery guarantee.

We do our utmost to deliver your order as fast as possible, with free shipping world wide, discreetly packaged and a guaranteed delivery.

  • Free shipping - We ship your order to United States (US) for free.

  • Discreetly packaged - The packages we send are discreetly packaged without any reference to cannabis or cannabis seeds.

  • Delivery time - You can expect your order within 5 to 15 business days on average.

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You can find more information about payments on our page Payment & processing

What does delivery guarantee mean? - Weedseedsexpress offers their customers a delivery guarantee which means that we provide a one time free re-shipment after 21 business days in case your products didn't arrive.  We can only provide this free replacement of your order with Track and Trace. The Track and Trace is necessary for both you and Weedseedsexpress to have proof of shipment and to easily track the location of the order.


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Rated 4.27 out of 5 based on 11 customer ratings
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