Type: 80% Sativa 20% Indica
THC Level: Low, 5-7%
CBD Level: High, 10-15%
Effects: Focused, Happy, Relaxed, Uplifting
Used for: Pain, Nausea, Muscle spasms, Seizures, Headaches, depression, anxiety
Flavours: Earthy, Mango, Sweet, Woody, Spicy
Dominant Terpene: Myrcene
Flowering Time: 8 to 9 Weeks
Yield: 590 grams per plant outdoors, or 700 gr/per square metre indoors
Height: Grows tall, 175 to 250cm outdoors, or 100 to 150 indoors
Best grown: Indoors and Outdoors (indoor better for CBD production)
Climate: Warm environment, with moderate to low humidity, 22 to 29 degrees Celsius
Grow difficulty: Moderate
Aromas, Flavours and Appearance
The aroma from Harlequin is lovely and sweet like vanilla, as well as earthy and woody. You may also be able to pick up hints of mango too. The aroma is not too pungent, so will not hang around in the air for a long time.
The taste is a natural and earthy flavour, with hints of pine, wood, spice, and a delicious creamy feeling that stays on the tongue.
Harlequin consists of dense buds, forest green leaves and eye-catching bright orange-yellow hairs and pistils.
Effects and Usage
Harlequin can help to boost energy, making users feel happy and uplifted, as well as a lovely relaxing sensation. This may help you to feel a bit ‘lighter’, giving a gentle motivation, without a super head-strong high.
Harlequin is a medical cannabis strain and can help users with headaches, pain, muscle spasms, and is even said to help with more serious conditions like seizures.
The most common adverse reaction is dry mouth which can be helped by staying hydrated with plenty of water. Newbies, although reports are rarer, sometimes experience some dizziness and paranoia.
This could be a good strain to grow indoors and hydroponically as you can monitor the environment well and may get increased CBD content. This strain is considered a moderately difficult grow but is possible for newbies who are up for the challenge.
Harlequin likes a warm climate with moderate to low humidity. It generally has a good resistance to mould and pests, but if you live in a humid place, it may increase your likelihood of mould, so an indoor grow would be best. Temperatures around 22 to 29 degrees Celsius are ideal, going 15 degrees lower at night.
During the seedling stage ensure your plants are getting at least 18 hours of light, or more, and at least 18 hours of light during the vegetative stage. Once the flowering stage commences, change the light so your plant is getting 12 hours of light and 12 hours of darkness each day.
Your plant will need the relative humidity (RH) to be kept high during the seedling stage, around 60-80%. This can drop down to 55-65% during the vegetative stage.
Once the flowering stage starts, decrease the relative humidity down again to 40-50%, and right at the end of the flowering stage drop further to 30-40%. Temperatures at this time should be around 23.5 degrees Celsius. If using a greenhouse to grow your cannabis plant, keep the humidity at no more than 50%.
Indoors or Outdoors?
If you live in a warm climate with relatively low humidity, you might be able to grow your Harlequin strain outside, just make sure there is good airflow in your grow space. If you are looking to get the most CBD production out of your plant, it is worth trying an indoor grow room to have complete control over the environment.
Flowering, Yield and Harvest
Harlequin grows tall and produces big yields, in around 8 or 9 weeks. Expect 590 grams per plant outdoors, or 700 gr/per square metre indoors.
When growing outside, you can harvest in mid-April in the Southern hemisphere or mid-October in the Northern hemisphere.
Check out our Aussie grow calendar for when to harvest outdoors in Australia.
Your plant will need very little nutrients, if any at if growing in soil, for the first couple of weeks. Nitrogen, phosphorus, and potassium (NPK) are the main three nutrients for all plants to survive. Nitrogen should be higher than phosphorus and potassium in the vegetative stage and can help with photosynthesis.
In the flowering stage, reduce the nitrogen and add more phosphorus and potassium. Phosphorus will help your plants roots grow strong and heathy and potassium can help your plants metabolism and production of proteins. If you are growing hydroponically giving your plant lots of oxygen during flowering to help the production of buds.
Using a CalMag supplement during flowering can help your plant grow to its best, and using organic nutrients can boost the flowering stage. Remember to flush your plants, i.e., stop giving them nutrient solutions a couple of weeks before harvest, so you do not get a chemical taste from your buds.
Other Growing Tips
Harlequin is a strain that produces large yields and will benefit from some stress training methods. Beginner growers should avoid high stress training techniques as you may end up damaging your plants.
Using a low stress training method will involve bending your plants leaves and tying them down, in order to expose the lower leaves and allow more light to reach your plant. This can help increase yield size and amount.
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!