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Cannatonic Feminized Seeds


Type: 50% Indica 50% Sativa Hybrid

THC Level: Medium to High, 7-15%

CBD Level: High, 9-12%

Effects: Relaxed, Mellow high, Happy, Uplifting

Used for: Migraines, Anxiety, Pain, Stress, Muscle spasms

Flavours: Citrus, Sweet, Herbal, Pine, Peppery

Dominant Terpene: Myrcene


Flowering Time: 9 to 11 Weeks

Yield: 481 grams per plant outdoors, or 510 gr/per square metre indoors

Height: 80 to 120cm outdoors, or 60 to 100cm indoors

Best grown: Indoors (particularly hydroponically)

Climate: Warm, dry environment, 22 to 27 degrees Celsius

Grow difficulty: Moderate

About the Strain

Cannatonic, a 50/50 indica and sativa strain, was created to provide users with good levels of both THC and CBD for medicinal benefits. This strain will relax you in a cerebral high, as well as provide a potent but mellow euphoric feeling. This is a go-to medical marijuana strain.

This strain is a mix between G13 Haze and MK Ultra and is known to have started the trend of higher CBD strains and other CBD related products in Europe. People use Cannatonic to help relieve pain, inflammation, anxiety, and stress.

Aromas, Flavours and Appearance

Cannatonic has a distinctive citrusy-earthy aroma, with hints of orange, sour and woody notes.

The taste is not overly powerful but a very natural flavour of fresh pine, citrus, and a sweet, tangy flavour that provides an enjoyable aftertaste.

The buds of Cannatonic are a yellowy-green colour, with dense colas and buds, which are quite large. It is also coated with crystals (trichomes) during flowering.

cannatonic buds on plant

Effects and Usage

Due to the slightly lower THC levels, and higher CBD levels, you will likely get a much more mellow high. This smooth high will leave you feeling calm and relaxed at the end of a busy day. It can make room for happy thoughts, and an uplifting feeling, as well as a slightly euphoric sensation.

Cottonmouth and eyes can be common with this strain, so remember to stay hydrated. Symptoms like paranoia and headaches are a less reported side effect but do sometimes happen. If a newbie, always start with a low dose first.

Cannatonic is often said to be one of the best cannabis strains to treat medical ailments, such as migraines, anxiety, pain, stress, and muscle spasms. Although you get a relaxing feeling, users still say that they feel somewhat energised and more focused with this strain, so it is still possible to use this strain during the day.


Whilst Cannatonic is generally fairly resilient to pests and diseases, some users report having problems with mould, which makes this ideal for an indoor grow. If you do decide to grow outdoors, ensure you are trimming your plants to allow a good amount of airflow through them. This strain is considered a moderately difficult grow.

Best Climate

Cannatonic loves a warm and dry environment of around 22 to 27 degrees Celsius.

During the seedling stage a temperature of around 25 degrees Celsius is ideal, going down to 21 degrees overnight. During the vegetative stage, ensure they have at least 13 hours of light a day, although up to 25 hours is even better. Once you get to the flowering stage, make sure your plants are exposed to 12 hours of darkness each day.


The Cannatonic strain likes a lower humidity level then other cannabis strains. Keep the humidity level to around 55-60% during the vegetative stage and drop to 50% during the flowering stage. Right before harvest (around one or two weeks), lower this further to around 40%.

Indoors or Outdoors?

This is a strain that requires a good deal of monitoring and so growers generally prefer to grow this strain indoors. If you live in a warm and dry environment then you might be able to grow outside, just keep an eye on any mould or mildew and ensure good air flow around your plants.

Cannabis loves growing in an indoor hydroponics system, where you can control the level of nutrients, as well as the temperature and humidity levels. It can grow fairly tall, so allow it room to breathe. Keep temperatures around 22 to 27 degrees Celsius.

cannabis plant in mid flower

Flowering, Yield and Harvest

Cannatonic produces an above average yield, with about 481 grams per plant outdoors, or 510 grams per square metre indoors. Flowering will take around 9 to 11 weeks.

Harvesting outdoors in the Southern hemisphere should be in April, and in the Northern hemisphere, October.

Check out our Aussie grow calendar for when to harvest outdoors in Australia.

Plant Feeding

Try not to add too many nutrients during the seedling stage, and if growing in soil, your plant will probably not need anything added, as the soil will provide all the goodness your plant needs.

During the vegetative stage keep any extra nutrients pretty low for the first few weeks. You will then want to give higher amounts of nitrogen then potassium or phosphorus, as well as secondary nutrients such as sulphur, manganese, calcium, magnesium, and cobalt. You can choose a high-quality soil or add in organic nutrients into a lower quality soil.

During the flowering stage, your plant will need higher levels of potassium and phosphorus levels and lower levels of nitrogen in comparison.

Water close to the stem when your plants are young, and as they start to develop it is better to water away from the stem. This allows the roots to get enough water intake.

Other Growing Tips

Some growers report mould and white powdery mildew. with this strain. You may see white spots of mould on your flowers, or a white powder on the leaves. Be sure to get to this early so it does not destroy your plant.  To help prevent this ensure a good ventilation and air flow around your plants, and that you are keeping to the optimal temperature and humidity.

Organic fungicide solutions like hydrogen dioxide can help with mould on your plants. Once sprayed on the mould areas it will dry it out and prevent the disease from spreading.

Feminised Seeds

Feminised seeds ensure that the plant you will grow is female. Only the female plants can make the flowers and buds that produce weed (not male plants). By buying feminised seeds you can be sure that you have the best chances for a good harvest!

marijuana seeds


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1, 10, 20, 3, 5

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