Transforming Girl Scout Cookies seeds into a¬†flowering¬†plant will take intermediate skill as a grower. It will take some care and expertise to grow them into their flowering phase and get full yields. However, it won’t be too demanding, since these plants are hardy and resilient.


They have natural resistance to many diseases and pests that can afflict other strains. They can be grown either indoors or outdoors, though they prefer room to branch out. A hydroponic set-up is very effective for indoor growing.

Many of the basic principles of growing marijuana plants apply to the Girl Scout Cookies plant. You’ll want them to be in a clean, well-lit, and well-watered environment – this will cut down on plant diseases and parasites. You should also take care to provide clean, nutrient-rich soil, or provide all the nutrients in hydroponic growing. This will go a long way in growing strong and healthy plants.

Male Vs. Female Plants

Of course, you must separate male and female plants if you’re growing for consumption. Male plants are not very useful for getting any harvests – their flowers are much weaker than buds. Only un-pollinated females will produce quality buds, which is the end result you’re looking for. If females get pollinated, they will produce Girl Scout Cookie seeds. The female will put its energy into growing seeds instead of buds, giving you less yield.

In addition, getting Girl Scout Cookies strain seeds mixed into the buds detracts from the final product. So it’s important to have female-only crops to get a good harvest. You don’t have to destroy all males, though – controlled, limited pollination keeps up genetic diversity if you’re a committed grower.

Germination of Girl Scout Cookies Seeds

To start off, you should germinate the Girl Scout Cookie seeds in wet paper towels or sponge. Once they open, they can be planted in damp soil. The growing plant should be illuminated by low-hanging fluorescent lighting for much of the day, assuming that you’re growing indoors. These lights are cheap and effective, and give plenty of blue-band light, which encourages foliage growth.


As for timing, it’s a good idea to have longer lit periods and shorter dark periods during their initial phase of growth. That causes slower maturation, leading to a higher quality crop later on. Light/dark hours during the vegetative growth phase vary from 24/0 to 18/6. When the plants flower, you must shift gears to a 12/12 light/dark cycle.

Temperature Of Growing Area

The temperature of the growing area should remain consistently between 68 and 78 degrees, with cooler temperatures at “night” (dark cycle). You might also want to invest in a dehumidifier to keep the room dry – excess humidity will reduce resin. You’ll want to keep up ventilation as well. As with all plants, they’ll need plenty of watering with clean water and drainage.

Harvesting Girl Scout Cookies Strain

If you’re diligent about growing your Girl Scout Cookies strain plants, you’ll get a high quality harvest after about 9-10 weeks, of about 2 ounces per plant.


  • Barb says:

    Good morning,
    I would like to ask if this 9-10 weeks is from seed to harvest, or is that time frame after they have started to flower?
    Thanks in advance,

  • dom says:

    First year growing Girl Scout strain and have noticed that its not as tall as plants I have grown in past…veg growth and fan leaves are huge,stalk nice and thick and is smelling amazing…germinated seed and put in soil June 6/2013 …Flowering should start soon??should I b at all concerned with the height of plant??


    • GSC says:

      Hey Dom,

      It depends on whether you’re growing indoor or outdoor. If it’s outdoor, it will flower depending on the weather. If it’s indoor, you should be growing with the lights on for 12 hours and the lights off for 12 hours. I would assume that a bigger plant is better!

      Good luck!

  • jah soulja says:

    Hello and Blessing to all … I have not had the best results when it comes to placing the germinated seeds into soil the beans pop but they don’t seem to even try to grow any advice is helpful ty

  • William Ray says:

    How much Sun do girl scout cookies need to grow outside

  • William says:

    I been growing girl scout cookies indoor for 3 weeks and it is showing female white hairs and then moved it outdoors 2 weeks ago. and just wandering if it will stay in flower. it is now april 28th and growing in Tennessee.

  • The Girl Scout Cookies is a amazing strain, i grew i multiple times and it is a high yielding strain. Great for commercial usage also!

  • d says:

    0mly 2 oz’s a plant? something must be a little off. we get a bout 6-8 oz’s per plant.

  • Bobby says:

    My grow will hold 16 plants. GSC grows bushy should I plant fewer?

  • justin says:

    When do I Flower my Girl Scout plant. she is currently about 3 foot tall. will she also do well in scrog?

  • erleon says:

    What humidity should I aim for for this strain?

  • Paul Lynn says:

    A crop of Girl Scout Cookie Clones is a good goal.
    Vegetate the plants for 8 Weeks take clones then set to 12×12 for flower.
    Early sexing is important too. Take a clone from each plant once its 6 to 8 inches tall. Put it under 12×12 light for a week and look for sex.

  • Jay says:

    Hey there i got some girls that have been in flower for about 12 weeks now and still look like they not done is that normal to have to take a 10 week strain a couple weeks longer?

  • Jose Martinez says:

    Im.growing my seed of gsc been trying to find info on how long it takes from seed to harvest growing outside starting to grow leafs between steams just want to know like in how many months to flower. Thanks

  • blakk says:

    How do u know when to pull the gsc. The big leaves have a lot red dots in the leaves?

  • Kyle Lessey says:

    I live in British Columbia canada ,where can I purchase GSC seeds

  • tom says:

    i planted june 1st and the trichomes are red and the leaves purple should i harvest now?

  • tom says:

    Where can i get girl scout cookies seeds? Original california ones.

  • AZMedicalBud says:

    I was “blessed” with an F1 Burner cut while a guest at the “cookie compound”. At that time we were the 18th person to be “gifted” a REAL GSC clone, and it was under a very strict agreement that we would NEVER share the strain with anyone, ever. Because of our reputation in the industry, we were “blessed” and trusted with this awesome strain. In the past 2 years since receiving our burner cut, I have been offered $5000 for a burner cut off of our mother. I am a man of my word and will not share the strain, as I agreed to, for no amount of $$$.
    I seriously doubt that there is anyone besides the close net group at the “cookie compound” that has access to GSC seeds. Buyer beware, often imitated, most the time people get Durban Poison and “assume” they have the REAL GSC’s. Please do not get ripped off.
    BTW, we (my brother and I) average 12 to 16 ounces per plant, per harvest. If you only net 2 ounces from a plant, ANY STRAIN, you are doing something terribly wrong.

  • phase says:

    I found a seed in some very good gsc…it has black lines,can I grow the stran from this seed?

  • momo says:

    How does a good ole Detroit boy get the real cookies cut or seed ? $

  • Manny says:

    whats up i have a cookie ? week 10 is the flush or is there a week 11 of strait flushing. i was stuck on that thought and im on week 7 lookin Fresh.

  • JD says:

    How is the long is the entire veg process? Growing indoors.

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