Hellfire OG Autoflower - week by week Grow Diary

Hellfire OG Autoflower Week By Week Grow Diary

This diary is based on, and authorized by, our well-beloved grower and friend Mosquito from the Netherlands. We'll gain insights into the growth and development of the Hellfire OG strain, a cross between OG Kush and SFV OG Kush.

Mosquito's Grow Setup

Here's some key info about Mosquito's grow setup, including how many plants he grew, the size of grow tent, and much more.

Strain Hellfire OG Autoflower by WeedSeedsExpress
Number of Plants Grown 1
Grow Tent 1m2
Light cycle 18/6 whole grow cycle
Grow Room Temperature 24C daytime, 20C during night
Medium Perlite
Nutrients used

Plagron, Biobizz, Advanced Nutrients

Seed to harvest time 13 weeks
Veg time 6 weeks
Flowering time 6 weeks
Plant training used LST & defoliation
Germination method Paper towel method with Cotton.


Final Results

Yield: 6.75 ounce / 191.5 gram dry
Growing Review An easy grow, the plant didn't need much attention.
Smoke Report The taste is wonderfully old-school citrus/earthy, lots of THC on it.

Grow Diary Hellfire OG


Mosuito starting germination using the simple paper towel method (in his case flat cotton balls).  The seed sprouted in just 48 hours.  As the seedling shows early growth, he was eager to get this Hellfire OG autoflower going. 


Weeks 1 and 2

The first two weeks there was steady growth.  The plant was in a small 0.2-liter pot under  18-hour light.  He kept temperatures at 22°C during the day and 18°C at night with 75% humidity.  By week 2, the seedling doubled in height to 4 cm, So he needed to move to a larger 50-liter pot.


Weeks 3 and 4

In the 3rd week the plant steadily continued to grow, reaching heights of 7 cm in week 3 and 9 in week 4. Environmental conditions kept stable, though nighttime temperatures were slightly adjusted.  The plant’s health remained sturdy although a minimal decrease of humidity in the grow tent.

Weeks 5 and 6

The plant was getting larger at week 5 and showed signs of vigorous development.Because the day temperature increased during this week the nutrient schema was adjusted.Mosquito started with applying Low-Stress Training (LST) and by week 6, the plant shot up to 40 cm. Such fast growing is a clear sign of the nearing flowering phase.


Weeks 7 and 8

By week 7, the plant height was 55 cm which was great, but it also was showing signs of overfeeding. The feeding was adjusted because of this. Week 8, the plant reached a height 70 cm. The nutrient mix was improved and the plant kept getting bigger, so it was neccasary to cut some leaves and to keep the growtent suitable.

Weeks 9 and 10

The flowering phase kicked in, with the plant reaching 77 cm in week 9. Nutrient levels were increased to get the most out of the floweringphase. Defoliation was applied to manage dense foliage and throughout week 10 the plant was starting to show a beautiful jungle like appearance.

Weeks 11 and 12

As the plant was flowering, the height stayed at 85 cm. Mosquito maintained the same light and temperature conditions as the previous weeks.  Nutrient mixes were optimized for better bud growth.

 By week 12,  Mosquito started with preparing the plant for harvest by minimizing the nutrients.

Harvest Time

It is always a rewarding experience when it is time to harvest and all the effort that is put into a plant has come to a great result.  From one plant, a yield of 191.5 grams of dry buds was harvested.

Grow your own Hellfire OG Autoflower

You might be inspired by Mosquito's grow on this strain, at least we are! You can now start your own grow and it would be great if you could share your experience as well.