atf strain flowering time

8 Tips for Growing Alaskan Thunder Fuck Marijuana [Grower’s Guide]

Alaskan Thunder Fuck, a.k.a., Matanuska Tundra or Matanuska Thunder Fuck, is believed to have originated in Alaska’s Matanuska Valley. However, most cannabis consumers refer to it by its initials ATF.

This legendary old-school sativa is said to have been brought to Alaska from Northern California in the 1970s. From there, it was hybridized with a Russian ruderalis and then later with an Afghani indica landrace.

With a name like Alaskan Thunder Fuck, (ATF), you would be correct in assuming that this is a hard-hitting strain. While ATF’s THC level is typically in the 16%-23% range, it can reach as high as 27%.

Smokers of this strain describe its high as euphoric, uplifting, and energizing.

ATF’s potent THC level is offset by a relatively low CBD content of approximately 0.80%. Smokers of this strain describe its high as euphoric, uplifting, and energizing. Be warned, though, ATF is a notorious creeper, which means its effects take longer to kick in than your average strain.

ATF is known for its intense aroma, which smells of skunk and diesel. Others say that ATF smells like pine or has an earthy fragrance. While ATF’s pungent smell may be off-putting for some, its rich and unique variety of flavors make up for what it lacks in the way of pleasant fragrance. ATF smokers generally say it has subtle undertones of menthol, pine, and lemon, with hints of spice, banana, and even orange.

If you are reading this article, you probably have been a consumer of ATF in the past. Maybe you have always wanted to grow your own ATF at home but didn’t know where to start? Hopefully, these tips will help guide you through the process and prevent you from making any rookie mistakes.

Tip #1: Difficulty Growing ATF

One of the challenges faced when growing Alaskan Thunder Fuck outdoors is that it is only moderately resistant to diseases. One tip for improving your ATF plants’ resistance to disease is by adding some silica to the soil. This can be done without too much difficulty by dissolving silicon in water and applying it separately from your two-part feed. For more on this, check out tip number 4 in this article: “Feeding for Alaskan Thunder Fuck.”

Silica stimulates the development and speeds up the process by which plants produce their cell walls. This leads to a more robust, healthier plant and helps to improve its resistance to pathogens. Another added benefit of silica is that it is a wonderful, natural alternative to toxic fungicides and pesticides.

You will need to closely monitor your plant and the weather to prevent it from being adversely affected by extreme weather conditions. In terms of pH, ATF grows better in a more acidic growth medium. Experienced ATF growers believe that the optimal pH level is 5.5.

Tip #2: Growing Techniques for ATF

ATF is best suited to a cooler climate due to its heritage. Outdoor ATF growers recommend planting in trenches rather than in pots to keep the roots warm.

Pruning methods such as topping and training are recommended for plants like ATF with large internodal spacing as they will produce longer, taller stems. Pruning the necessary nodes and internodal spaces will create more desirable branching, leading to higher yields.

ATF growers recommend that you use dowels to help the plant support its own weight as it grows. You will also need to stake the branches and the apical stem to prevent your buds from drooping into the soil.

All you need to know to grow Alaskan Thunder Fuck cannabis strain at home including indoor and outdoor requirements, feeding, lighting, and more.

ATF way past her typical flowering time


So in early march I started growing an Alaskan Thunderfuck seed from an eighth of ATF I had over the winter (lucky to find a seed I guess). Around the one month mark (early to mid-April) the plant started to auto flower. I was psyched cause it meant that I didn’t have to take it in off my balcony every night and put it into my blackout closet to flower it. Now I’ve done some research and know that the ATF strain takes approx 8-10 weeks to finish flowering. Well I’m nearing the 11th week here and I’m starting to get curious. The trichs are about 10-20% amber, but the hairs on all of the buds are still white, with some having already turned orange. The plant has gotten pretty top heavy with some of the branchs sagging to their sides. It seems ready to harvest soon, but I thought for sure it would have been done by now. Haven’t seen TOO much progress in the past few weeks, so I guess my question to you is: is this girl anywhere near harvest? Should I start flushing her? I don’t care if I have to be patient and wait another week or even month, but I also don’t want to wait too long and not harvest when I should have. I’ve attached pics below. Let me know if you need any other info.

I’ve heard rumors (mainly from a specific friend) who says that Alaskan Thunderfuck can’t be an autoflowering plant. I don’t know how true this is. But if it is true then I don’t know what strain the shop actually sold me cause it was an ATF eighth that I found the seed in.

THANKS AHEAD OF TIME. Please let me know if you need any more information!

Hey everyone! So in early march I started growing an Alaskan Thunderfuck seed from an eighth of ATF I had over the winter (lucky to find a seed I guess)…