8 Mega Tips for Growing Platinum GSC (Girl Scout Cookies)

Everything you need to grow this popular strain at home.
MarijuanaBreak Staff MarijuanaBreak Staff / Updated on February 1, 2019

Growing Platinum GSC Cannabis

Now is the perfect time to grow your favorite marijuana strain! In our growing guide for Platinum GSC (Girl Scout Cookies), we provide you with several tips and tricks as part of our continuing series. Remember, you can expect to grow a slightly different Platinum GSC strain from one harvest to the next, so don’t get upset if it doesn’t provide you with the effects you were hoping for the first time around.

We recommend creating a grow journal so you can make the necessary changes when you elect to grow any marijuana strain again.

Tip #1: Strain Review – What to Expect from Platinum GSC

Platinum GSC is an indica-dominant (60%) hybrid and is a cross of OG Kush and Durban Poison. It has been described as a more ‘potent’ and ‘evolved’ version of its sister strain, Girl Scout Cookies. Its potency is certainly not in question, though, as some samples of it have up to 28%! Normally, however, its THC level is in the 17% to 24% range.

Users of Platinum GSC will quickly feel its psychoactive effects. It is probably best for novices to avoid it, because even experienced users are often taken aback by the strength of this strain. Users report feeling happy and more than a little warm and fuzzy. The body high is powerful and enables you to relax and go to sleep. If you still have the desire, Platinum GSC could inspire you to do something creative, if only you could get off the couch!

It provides a clean high and is a popular medicinal marijuana strain. Platinum GSC is often used to treat depression, anxiety, and other mood disorders. Patients recovering from chemotherapy also use this strain to help boost their appetite. The potency of Platinum GSC means it could prove to be an effective painkiller, so consider using it for muscle spasms, joint pains, and migraine headaches.

Tip #2: Difficulty Growing

In general, Platinum GSC’s grow difficulty isset at ‘moderate’ but it becomes ‘high’ when you try to boost the overall yield. Overall, it is a strain that is fairly resistant to pests and disease, although it is a good idea to check your plants regularly for signs of common pests such as spider mites.

If you notice tiny orange, white or yellow specks on the leaves of your plants, there is a chance that there is an infestation. As spider mites are so small, a large colony can grow and spread to the rest of your crop if you are not vigilant. Worryingly, just one mature female mite can produce one million mites in a month!

Commercial pesticides such as Azamax work well, but you can also try to use homemade solutions. For example, a mix of a tablespoon of bleach to a gallon of pH balanced water at a temperature of 95 degrees can devastate an infestation. Another option is to mix 9-parts water with 1-part Ethanol. Spray on your plants to kill the mites on contact.

Tip #3: Best Growing Techniques for Platinum GSC

For all the fancy growing techniques you can view online, few work better than the relatively simple measure of ensuring your plants are exposed to the right kind of light intensity. If you want to get the best out of your Platinum GSC crop, you have to analyze your grow space and purchase the right lighting option:

  • High-Intensity Discharge (HID) Lights: HIDs have been widely used in the marijuana industry since the 1980s. The most commonly used are Metal Halide (MH) and High-Pressure Sodium (HPS) lights which need ballasts to function properly. You also need to buy reflectors to boost light efficiency and a timer. HPS lights are best for larger grow rooms. MH lights are especially useful during the vegetative stage.
  • Light Emitting Diodes (LED) Lights: LEDs are expensive, but their excellent power efficiency means they are value for money if you plan on multiple harvests. They run far cooler than HIDs, which means they can work in smaller grow rooms, but beware their power!
  • Fluorescent Lights: Compact Fluorescent Lights (CFLs) are the most common type and are the least powerful option on this list. They are also the best choice for a tiny grow space because there is minimal risk of causing lightburn.

Tip #4: How to Boost Platinum GSC Yield

If you are not happy with the moderate yield provided by Platinum GSC, you can look for ways to give it a shot in the arm. It may seem counter-intuitive, but removing your plants’ fan leaves could help boost your overall yield. Even if you have an excellent ventilation system and ensure your grow room has the right temperature and humidity, allowing the canopies of your plants to become too dense will hinder overall growth.

Go into your grow room and take a look between each cola. If you are unable to see into the center of the canopy, it is time to start trimming those leaves! However, make sure you don’t get rid of the sugar leaves that are circled around the colas; you can use them to make cannabutter.

Next, look down on your plants. If excess fan leaves are causing the colas to be blocked from the light, get rid of them! It should go without saying that you need to remove any leaves with powdery mildew; an issue that can arise when you don’t trim away excess leaves early enough.

Tip #5: Feeding Your Platinum GSC

Platinum GSC is a big eater, so feel free to provide it with lots of nitrogen, phosphorus, potassium, copper, iron, manganese, magnesium, calcium, and the other micronutrients and secondary nutrients that marijuana plants need. Reduce the level of nitrogen in the flowering stage, and stop feeding your plants a week or two before harvest.

In fact, you can begin reducing nutrient intake up to four weeks before harvest time, but be sure to lower the intake gradually. It is normal for your plants to begin losing leaves near the end of the flowering stage. Don’t mistake this for nutrient deficiency and overfeed your crop! If you add too many nutrients at this late stage, you prevent the plant from developing buds properly.

When you reduce nutrient intake at this point, the buds of your Platinum GSC crop should begin to swell dramatically. It also ensures that there is no nasty ‘nutrient taste’ in the buds once you are ready to use them.

Tip #6: Should You Grow Platinum GSC Indoors or Outdoors?

Platinum GSC is a versatile strain that grows well indoors or outdoors. If you choose to grow it indoors, it will yield around 12 ounces of bud per square meter. It is likely to produce rather small ‘popcorn’ buds covered in trichomes.

Outdoor growers can expect it to be ready for harvest by mid-October, and it yields around 16 ounces per plant. Make sure you live in a warm climate and consider topping the plant regularly to develop several new bud sites.

We recommend using a greenhouse if you have access to one. You will have all the benefits of outdoor growing, without concerns over the climate. Also, you will be able to enjoy multiple harvests every year.

Tip #7: Platinum GSC’s Flowering Time & Harvesting

Platinum GSC’s flowering time is 7-8 weeks. While the ‘pistil method’ is a popular way to determine if your marijuana strain is ready for harvest, the trichome method is more accurate. Ideally, you will use a handheld magnifying glass with a magnification of between 30x and 100x.

As your crop reaches its highest potency, its trichomes turn from clear to cloudy white and eventually turn amber. It is during this point that the trichomes hit their highest THC content and start to break down because of exposure to UV rays and oxygen. When THC degrades in this manner, it turns into cannabinol (CBN). CBN has its own potential health benefits and could be used to treat pain, insomnia, and inflammation, but whatever high you receive is of the sedative variety.

Once the trichomes change to an opaque white color, it means they are no longer producing THC. Harvest at this point if you want the most potent Platinum GSC.

Tip #8: What is the Best Climate for Growing the Platinum GSC Strain?

Platinum GSC grows well in mild to warm climates. Do your best to keep daytime temperatures between 68- and 80-degrees Fahrenheit. This strain also thrives in low humidity. As a rule of thumb, it is recommended that you keep your weed in a grow room with a humidity level of 55-70% during the vegetative stage.

Make sure you reduce the humidity level gradually until it is around 40-50% by early flowering and 30-40% in late flowering. As far as Platinum GSC is concerned, keep the humidity level on the lower end of these ranges.

Final Thoughts on Growing Platinum GSC

Unless you have tasted both, it is normal to assume that GSC and Platinum GSC are virtually the same. To be fair, there is a myriad of similarities, although GSC has a more minty taste. The Platinum version is also a little more potent.

Overall, Platinum GSC is a potent yet relaxing strain that soothes aches and pains, and provides a boost in your mind, along with a euphoric head high. Whether you use a vape pen, joint or bong, expect a skunky smell coupled with a cinnamon and berry taste that treats your senses. With a high THC content, Platinum GSC is a marijuana strain to be respected.

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