8 Tips for Growing Blueberry Kush Marijuana: The Practical Growing Guide
January 9, 2019

8 Tips for Growing Blueberry Kush Marijuana: The Practical Growing Guide

Our complete guide to growing this fruity strain
MarijuanaBreak Staff MarijuanaBreak Staff / Updated on January 9, 2019

growing blueberry kush

For those who want to grow their favorite strain, we have created a series of guides comprising steps and tips to help you from germination to drying & curing. Today, we look at one of the most aesthetically pleasing marijuana strains, Blueberry Kush. It is a strain bred in Oregon that is a cross of OG Kush and Blueberry. With such famous parents, Blueberry Kush was under pressure to perform, and it has met the challenge!

It is an almost entirely Indica strain with a THC content rising to 24%.  Experienced growers know that Blueberry Kush creates dense colas, and the high is extremely sedating. Indeed, the scent of his delightful strain alone is enough to de-stress you. Along with the gorgeous Blueberry scent comes citrus and grape odors. The taste is similar to the scent, and if your goal is pure relaxation, this is the strain for you. Keep reading to learn more about this unique strain in our growing guide for Blueberry Kush.

1 – Should I Grow Blueberry Kush Indoors or Outdoors?

It is a tricky strain to grow regardless, but you need experience and lots of time on your hands if you want to grow Blueberry Kush outside. It needs plenty of sunshine, and close monitoring is essential because it is a hungry plant. If you grow outdoors, your crop could be ready for harvest by the end of September, but don’t be surprised if it is closer to the end of October. Your reward is up to 23 ounces of bud per plant.

If you grow indoors, a hydroponics setup will work best. Its flowering time is 8-10 weeks, and its yield is just 7 ounces per square meter. On the plus side, you get to witness the birth of a glorious plant. Early on, you should see red and purple colors, but as it gets older, the plant will begin to showcase its stunning array of blues. As Blueberry Kush seldom grows above 40 inches, it is ideal for indoor growing.

2 – Watch Out for Mold

As Blueberry Kush is almost 100% Indica, it grows short and stocky. As a result, you need to prune plants occasionally to ensure there is enough airflow getting to all areas of the plant. Otherwise, there is a risk of mold growing on the plants and causing havoc. The most common types are powdery mildew and bud rot, also known as Botrytis.

As the name suggests, powdery mildew is white, and it appears on the leaves of your plant; it almost appears as if snow has fallen on them. If left unchecked, the mildew inhibits photosynthesis and causes your crop to die from lack of energy. Bud rot tends to begin at the base of the stem and is hard to spot. If small leaves of the cola begin to wither and dry out, it is a possible sign. Once it reaches an advanced stage, you will see black specks on the mold.

Aside from cool temperatures and stagnant air, there is a third major reason why bud rot and powdery mildew occur.

3 – Avoid Excess Humidity

When growing Blueberry Kush, make sure the temperature in your grow room remains between 68- and 80-degrees Fahrenheit. As for humidity, the dense foliage of this strain and its genetic makeup mean it prefers low humidity. Keep your Blueberry Kush seedlings or clones in a room with a humidity level of 70%.

Reduce it to 55-60% during the vegetative stage and ensure temperatures stay between 70 and 80 degrees in the day, and no lower than 65 degrees at night. By the flowering stage, this strain only needs a humidity level of 40% to thrive. Once again, the temperature range is all important. As humidity falls, you can boost the temperature if you wish, but don’t exceed 80 degrees.

4 – Hydroponics

Blueberry Kush thrives in a hydroponics setup which involves the use of an inert medium such as Rockwool instead of soil. If you go down this route, make sure you purchase a kit that includes everything you need. A lot of growers see great results when placing individual pots in a larger water system.

Mesh pots are an excellent option. Add an air hose, air pump, and air stone to aerate the water. When air bubbles are created and popped, they ensure your inert material remains moist and gives your weed the nutrients it needs. This is classified as an ‘aeroponics’ system. Popular hydroponics systems include Ebb and Flow, Deep Water Culture, Continuous Flow, and Drip Irrigation.

No matter what materials or set up you end up using, the beginning of the set-up is more or less the same. The most important thing is to sterilize all materials to kill bacteria. You can do it using rubbing alcohol, peroxide, and water. Don’t use the materials until they are sterilized or else you risk pathogens entering and ruining your crop.

5 – pH Considerations

As a rule of thumb, keep the pH of the soil between 6.0 and 6.8. If you have a hydroponics system, controlling the pH is even more important as you need to keep it in the 5.5 to 6.5 range; although experts now believe that a 5.5 to 5.8 range is best for hydroponics. The pH level of your soil impacts nutrient intake significantly. If your growing medium is outside the recommended range for too long, it will be unable to consume nutrients, and a deficiency is inevitable.

6 – What If I Live in an Area Where Water is Sometimes Scarce?

If you live in California, it is legal to grow weed at home and smoke your own supply without a medical marijuana card. However, the Golden State is rife with water problems, so perhaps it isn’t feasible to use the enormous amounts of water you may need to grow your Blueberry Kush.

Fortunately, there is a hydroponics setup just for you. Drip irrigation is an excellent way to grow weed but save water and nutrients. With this system, water and nutrients are fed to your crop from above. You can use it indoors or outdoors, and it even works with soil! It involves the use of small droppers which you place above the grow medium next to the root or stem.

It drops tiny droplets of solution consistently and constantly. As a result, your plants get the water and nutrients they need without fear of any deficiencies, and you save water. Whisper it quietly, but it is also used by ‘stealth’ growers, and it works well in cramped spaces because you can still grow a decent-sized crop.

7 – Lighting Considerations

High-Intensity Discharge (HID) lighting is popular among those with a hydroponics setup. Other commonly used systems include High-Pressure Sodium (HPS), Metal Halide (MH), and Light Emitting Diodes (LEDs). MH lighting is ideal for the vegetative stage whereas HPS lights are a good option for the late flowering stage because they provide plenty of orange, red, and amber light.

Although HID lights offer ample heat and light, they aren’t very energy efficient. If you use them, you need a good ventilation system and a ballast. For professional growers, there is no substitute for full-spectrum LED lighting which emits the closest thing your Blueberry Kush plants will get to sunlight without actually being exposed to it.

If you have a tiny grow room, Compact Fluorescent Lighting (CFL) might be enough if you place the plants close enough to them. Just make sure you regularly check your crop so that the plants are not so close to the lighting that they get damaged. When growing indoors, try to provide at least 18 hours of light a day until it is time to flower. At that point, switch to a 12/12 cycle for a couple of weeks until your plants are flowering.

8 – What About Seeds & Clones?

Modern-day marijuana growers don’t know how good they have it! Auto-flowering seeds have taken the market by storm and begin flowering as soon as they reach the right level of maturity, regardless of whether you provide the right light cycle. These plants have a shorter vegetative stage of around three weeks.

If you prefer traditional seeds, make sure you purchase feminized seeds. Otherwise, it is 50/50 whether you get male plants. If all you are after is weed that gets you high, you need female plants. As for clones, they are taken from cuttings of a ‘mother’ plant. If you are a novice, it is best to purchase seeds, clones, or auto-flowering strains from reputable online sources.

Once you have successfully harvested your Blueberry Kush, all that’s left is to cut it down, trim away fan leaves, dry & cure it! You can rush through this process but you risk allowing mold to develop, and moldy weed is a harsh smoke and very bad for your health. Curing weed is time-consuming, but the result makes it worth it.

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