Sub Zero Strain Guide: Genetics, Terpenes, Effects, and What Growers Actually See

Sub Zero is an evenly-balanced to indica hybrid produced by Grow More Fire Genetics through Super Boof crossed with Oreoz, coming in at around 20-28 percent THC on average.

It is known as Sub Zero or Sub Zero #12 on menus, named for the amount of trichomes, where it seems like the flower is frozen due to the density. Leafly named it a strain destined for big things in 2026. Here is the genetics of the strain, the terpene profiles, and the behavior of the plant inside a room.

What Is the Sub Zero Strain?

Sub Zero is a new hybrid designed for resin. The strain circulating through 2026 menus has been produced by Grow More Fire Genetics after crossing Super Boof and Oreoz, and picking the twelfth phenotype out of the bunch – this is why sometimes you can find the Sub Zero weed strain marked as Sub Zero #12 and sometimes just Sub Zero.

What sets it apart from a bunch of frosty hybrids bred recently is that there is more to it than just the frost. The Super Boof contributes bright citrus-and-cherry flavors. Oreoz adds cocoa, gas, and resin profiles, which makes it of interest to extractors. Overall, it has a sweet-and-sharp aroma and gives head effects right away. It sits among the THCA flower menu we run year-round.

Breeder	Grow More Fire Genetics
Genetics	Super Boof × Oreoz
Type	Hybrid, leaning indica
THC	20-28% (elite cuts 30%+)
CBD	Under 1%
Dominant terpenes	Myrcene, limonene, caryophyllene, humulene
Flowering time	57-63 days
Grow difficulty	Beginner-friendly
Also known as	Sub Zero #12, SubZero

One thing to sort out before you buy: more than one plant answers to this name. That’s worth a minute of your time, because the differences are significant.

What Are Sub Zero’s Genetics and Lineage?

The main genetic lineages of Sub Zero are Super Boof × Oreoz by Grow More Fire Genetics. These are both heavyweights and appear to be quite evident in the final product.

Super Boof – the bright one

Breeding from a San Diego-based breeder, Blockhead, between Black Cherry Punch and Tropicana Cookies strains and initially distributed under the name of “Blockberry” strain, Super Boof has been awarded Leafly’s Strain of the Year for 2024 and usually contains about 28% of THC. This strain brings to Sub Zero all its bright citrus smell, candy-like cherry flavor, and much of the structure.

Oreoz – the heavier one

Crossed between Cookies and Cream and Secret Weapon, Oreoz provides another side of the mixture with elements such as dark chocolate taste and smell, increased body mass, and great trichome production. Oreoz is widely known for being great for resin production among hash producers, and this feature is transferred to Sub Zero. Buyers who like that dessert-gas direction usually also look at Purple Cream.

What Does “Sub Zero #12” Mean?

#12 is a phenotype number – the twelfth plant picked from the initial Super Boof × Oreoz seed strain due to its frost production.

It’s important beyond its seeming simplicity. As a breeder sows a pack of seeds, all the plants are genetically unique. Some may be two weeks ahead in maturation, some may have twice as many terpenes, and others may not even deserve the place they take up. He or she selects the most interesting one and keeps it as a mother plant. Every cutting from that mother will have an identical genotype.

That’s why “Sub Zero #12” is an indicator of an authentic clone lineage coming from that exact chosen plant. Anyone searching for the Subzero 12 strain is looking for this cut specifically. Unbranded “Sub Zero” from seed may vary greatly, from awesome to mediocre. It’s the difference between the reproducible product and a lottery ticket for a large-scale buyer. Make sure what you’re buying, and buy from a vertically integrated operator who can name the cut.

What Type of Hybrid Is Sub Zero – Indica or Sativa?

Sub Zero is a hybrid that is closer to indica than its ratios on paper suggest. Both AllBud and Strainpedia claim that it has an even 50/50 ratio, while SeedsHereNow gives it a 60/40 ratio. A number of dispensary listings simply label it as an indica.

But there is no mystery here – the effect profile is the same regardless of which ratio you refer to. Sub Zero starts out cerebral – clear-headed, euphoric, sociable – and after half an hour moves into the body. Whether you want to classify it as 50/50 or 60/40 depends mostly on where you are in your session when you take notes.

It is also dependent on phenotype – strains that have more limonene tend to be brighter and more functional, while strains high in myrcene and caryophyllene tend to come slower and harder. Same strain name, same genetics, but different experiences.

Conclusion: treat it as a hybrid with an indica finish, and adjust the dosage based on the COA. Onset works differently again in cannabis edibles, so the same numbers do not transfer across formats.

What THC Levels Does Sub Zero Test At?

Sub Zero usually tests between 20% and 28% THC, with some strains breaking 30%. According to Leafly, this “strain will often test at over 22% THC.” AllBud’s average ranges from 24% to 28%, and Hytiva recorded a crop with 27% THC.

CBD content is under 1%, typical for a contemporary high-THC hybrid. CBG levels generally fall in the 0.2% to 1.0% range; CBC averages 0.1% to 0.5%. While neither is the driver, both contribute to the total cannabinoid profile. That range places it firmly among the strongest THCA strains moving through the market right now.

Reading the Sub Zero COA

Most available figures for this cannabis strain are found on vendor websites and aggregator websites, not laboratory reports. If you do find a Sub Zero COA, look beyond the top line figure:

• Verify that total THC is included, not just delta-9 THC
• Ensure that the batch number listed matches your batch
• Ensure that the document date corresponds to the harvest date of the product you have

Passion Farms tests each batch and issues COAs with the catalog to approved buyers.

What Terpenes Drive Sub Zero’s Profile?

Myrcene, limonene, caryophyllene, and humulene make up the bulk of Sub Zero, with terpene levels normally ranging from 1.5% to 3.0%. Special blends will have levels exceeding 3.5%.

They all have distinguishable jobs to do:

• Myrcene – the rich base of the strain, which makes up most of its body weight
• Limonene – gives the citrus effect off the Super Boof end and also forms the bright start
• Caryophyllene – gives the peppery effect on the exhale and is the only common terpene that connects with CB2 receptors
• Humulene – forms a dry, hoppy effect that curtails any sweetness in the strain

Some regional strains also come with farnesene and linalool that add further character to the strain.

In terpene dominance lies the place where phenotype variance is visible. There can be two jars of Sub Zero, but with different terpene combinations. The COA is a much better indicator of the batch’s effect than the name of the strain. The same logic applies to our vape cartridges, where the terpene source decides the flavor.

What Does Sub Zero Smell and Taste Like?

The Sub Zero is known for having a smell similar to frozen gas mixed with vanilla cream; it smells both sweet and pungent.

If you tear a bud apart, the aroma profile becomes visible in layers. The first notes are citrus and cherry candy, which come from the Super Boof lineage. The second note is a cocoa and diesel-like odor, which is due to the presence of Oreoz. The aftertaste is peppery; it is due to the caryophyllene in the plant and the cooling effect that is perceived by users as mint or wintergreen. Dessert-leaning smokers who like Black Cherry Gelato will recognize the sweet-fruit-over-creamy-base structure here.

It is necessary to say why this mint sensation can be considered confusing. In fact, there is no menthol terpene in the Sub Zero strain. However, the combination of different aromas leads to such an impression: sweetness, combined with lemon and pine-like aroma.

When you inhale Sub Zero, you will smell sweet cream and citrus. When you exhale, the smell of chocolate, gas, and pepper is noticeable.

What Does Sub Zero Look Like in the Jar?

Sub Zero comes off like it’s frozen solid. There’s an overwhelming amount of trichome coverage, so the snowglobe comparison is often used, and the resin is thick enough to cause the bud to be slightly sticky even through gloves.

It’s a structure with big, tight blocky buds, golf-ball-shaped buds with no give to them, thanks to the Oreoz genetics. It is density, a desirable trait on the shelf and in the grow space, but more about this later.

Color is from forest green to near-black purple. It’s not consistent, and the purple color doesn’t happen unless the temperature at night during flowering drops below around 65°F, meaning the same clone might come out green in one grow space and nearly black in another. Either way, bright orange pistils pop through.

Bag appeal is real with Sub Zero. In the jar market, Sub Zero is visually appealing and will sell itself, which is why it sits alongside our other premium THCA strains.

What Effects Does Sub Zero Produce?

The effect is reportedly euphoric and clear-headed at first and develops into body relaxation after approximately thirty minutes.

The beginning is reportedly social and cerebral, meaning that people report a conversationally active and creatively productive stage, as opposed to being foggy. After the terpenes kick in, the heaviness takes hold in the limbs and shoulders, and the latter part of the experience is reported to be significantly more relaxing than the first. The total effect reportedly lasts two to three hours when consumed through inhalation of the flower.

Side effects include those typical for a cannabis strain of such potency: dry mouth and eyes are the most common, and racing thoughts have been reported by THC-sensitive individuals. A cautious approach with this high range (20-28%) is recommended.

As a result of the aforementioned progression of effects, the Subzero weed strain is usually used in the late afternoon or evening. With smaller doses, the beginning dominates, and the strain stays active, whereas with larger doses, the indica relaxation effect is faster and more persistent. Buyers wanting a lighter, more portable version of the same profile tend to move toward disposable vapes.

Nothing here is medical advice. Effects vary by individual, dose, and batch.

How Does Sub Zero Grow?

Sub Zero takes around 57-63 days to flower and allows some margin for error for those whose room isn’t optimized.

Grows that growers report

The most detailed account on the web of growing the verified #12 strain is that of Crafty_Flame from Overgrow, with the plants grown in a 4×2 tent using coco with Floraflex nutrients. The grower describes the plants as “super vigorous” and taking their appearance largely from the Super Boof phenotype. The grower lollipopped and stripped the plants on day 21 of flowering and fed hard – “I feed 3 EC so they can handle whatever I throw at them” – without any signs of heat issues or bleaching. The most memorable part of their day 40 entry is what most growers will recognize: “Tent wreaks like candy.”

Space and yield

Stretching is around 1.5×-1.6× after flipping, so plan space properly. Indoor yields go up to around 1.8 lb per light. Outdoor plants are around 20 oz. More grow write-ups like this one sit on our cultivation blog.

How Do You Avoid Bud Rot in Sub Zero?

Keep the late flower humidity low and keep the canopy opened up early since the Sub Zero density is precisely what botrytis thrives on.

The same characteristic that makes these flowers take great photos is a risk factor. Densely packed colas retain moisture in the interior, and often, when you see grey mould forming on the outside, it has already been making its way through the inside of the bud for several days now. It is the most common issue that comes up with this strain.

There are three main ways you can minimize the chances:

• Lollipop early – the day-21 defoliation from the Overgrow logs is for this purpose
• Move air through the canopy, not just across the top of it
• Reduce humidity during the last two or three weeks to around 45-50%

The harvesting period occurs around days 57 to 63. One particular grower has harvested Sub Zero buds up until day 62, which falls within the normal range. If you are running this cut and want a second opinion, our grow team is reachable.

What Is Subzero Cherry Bomb?

Subzero Cherry Bomb is something else altogether – it is a hybrid of the Cherry Bomb type with “Subzero” frost branding, and not the Grow More Fire cut described above. The producers of this one are Diamond Dust and Dairy 2 Dank, and its reviews characterize it as aggressively citrusy, more resembling orange soda than cocoa or cream.

And finally, there is a third plant to consider, and this is where the majority of menu confusion arises:

Name	Breeder	Genetics	Profile
Sub Zero #12	Grow More Fire Genetics	Super Boof × Oreoz	Citrus, cherry, cocoa, gas
SubZero	North Genetics	Chemdawg × Hindu Kush with Strawberry Diesel	Berry, diesel, earthier
Subzero Cherry Bomb	Diamond Dust / Dairy 2 Dank	Cherry Bomb cross	Sharp orange citrus

Three plants, one name. If lineage matters to you, ask the breeder before you ask the budtender. Our buyer FAQ covers how we document genetics on every batch.

What Makes Passion Farms’ Sub Zero Different?

Sub Zero grown at Passion Farms is not brokered but produced internally, eliminating the variability issue outlined above.

All of what has been discussed leads to one single conclusion: the Sub Zero name on its own guarantees nothing. There are three distinct genetic strains that carry the Sub Zero name. In the dominant strain, the difference can be found between clone and seed stocks. In the verified clone stock, terpene production varies by room, and purple gene expression varies depending on night temperature.

This is a real commercial problem for a customer. Flowering with 27% potency and 3% terpene content with almost black coloration is a different product from flowering with 20% potency and green coloration, even if they both have a Sub Zero label.

Passion Farms operates licensed growing facilities in California and Oklahoma with identical genetics and identical process every time, with lab testing done for each batch and a COA for each run, where the flower mentioned on the COA is the actual flower delivered in the box – the same standard applied across our bulk THCA flower line.

How Do You Buy Sub Zero Wholesale from Passion Farms?

Send an inquiry for wholesale orders, and you will be sent the current catalog, certificates of analysis, and sample information as soon as your account is reviewed.

Price and size information

Prices vary by wholesale, multiples, and singles. Currently, there is no longer a requirement for a minimum order in pounds alone; instead, customers may order quarter-pound and half-pound amounts in all three operational states, enabling retailers to test run Sub Zero on their shelves without a commitment in weight.

Shipping and other information

Shipments are handled directly from the CA and OK grows, and this is significant for customers in Texas because Houston, Dallas, San Antonio, and Austin retailers have faster delivery times compared to those from out of state. Indoor, greenhouse, and mixed-light strains are available and packaged to the market, and custom packaging is available to qualified partners in pre-rolls and jars.

Final Thoughts on Sub Zero

Sub Zero was deservedly featured on 2026 menus. The Super Boof × Oreoz hybrid delivered on three things that matter to buyers: it looks like it should in the jar, it has a true multilayered terpene profile, and it hits the testing levels to move product.

For cultivators, this is a manageable plant with only one caveat – be mindful of the density during the back half of the flowering cycle. For buyers, this is due diligence. Make sure that the strain in question is indeed the Grow More Fire #12 phenotype, not an attempt by a seed-run breeder to emulate the strain or one of two completely different plants that share the same name, by means of a batch COA.

Passion Farms is a licensed multi-state operator growing, processing, and distributing its own cannabis out of California and Oklahoma, supplying retailers, wholesalers, and distributors across the country. We offer Sub Zero from those same farms, with lab reports included in each batch and a quarter-pound size available for customers who wish to test their purchases first. Get those two details sorted, and Sub Zero becomes one of the most reliable premium hybrids out there.

FAQs

1. Is Sub Zero indica or sativa? 

Sub Zero is a combination strain that is primarily indica-dominant. Ratios for the same can vary widely depending on the information source, from 50/50 right up to 60/40 indica dominant. The effects of the same are, however, predictable and constant – a definite cerebral high and body high in equal measure.

2. Is Sub Zero a good strain? 

Certainly, by means of market signals. It was named by Leafly as one strain that is expected to make a buzz in 2026. The THC level of this variety lies in the range between 20% and 28%, and the density of trichomes makes it visible on the shelves. Growers also report it as vigorous and beginner-friendly.

3. Does Sub Zero turn purple? 

Only when the appropriate conditions have been met. The purple coloring relies on the presence of active anthocyanin, which requires cool nights when flowering late with temperatures lower than about 65 degrees Fahrenheit. The same clone may mature to dark forest green in one room and near-black purple in another.

4. Which strain is 100% sativa? 

Real 100% pure sativas are landrace strains, such as Durban Poison, Thai, and Malawi Gold, which evolved in tropical areas without any crossbreeding. Virtually all that is found in today’s dispensaries is a hybrid of one sort or another. Sub Zero is not a sativa; it is a hybrid that is indica-dominant.

5. Is Sub Zero the same as SubZero from North Genetics? 

No. They are unrelated plants that happen to have the same name. While the Sub Zero that you will find in most menus for 2026 is the Super Boof × Oreoz by Grow More Fire Genetics, the North Genetics’ SubZero was created by combining Chemdawg, Hindu Kush, and Strawberry Diesel.

6. How long does Sub Zero take to flower? 

Subzero takes between 57 and 63 days, or eight to nine weeks, to mature. One reported growth log reached day 62, which is at the later end of the spectrum. The stretch will be roughly 1.5 to 1.6 times more than the pre-flipping period, so plan vertical space accordingly.

7. Is Sub Zero good for beginners to grow? 

Generally yes. It is described by growers as vigorous and a heavy feeder, with one documented log at 3.0 EC without any bleach out or heat stress. The only real problem is the danger of bud rot within its thick colas, requiring early defoliation and humidity management right up to harvest.

8. Does Sub Zero make good hash? 

Yes. The ancestry of the Oreoz provides an excellent resin content, and fresh frozen washes have been noted to come back in the 3-6% range. It is the abundance of trichomes that makes Sub Zero look great in photos, and also what makes it a great candidate for solventless extractors.

9. Where can I buy Sub Zero wholesale? 

Sub Zero is available for purchase from Passion Farms using its own license from both California and Oklahoma. The price of this product depends on the amount purchased, including wholesale, multiple, and single purchases. Quarter-pound and half-pound packages are available to try out the strain.

10. Is Sub Zero THCA flower legal? 

It all depends on your state and the current date, and things are rapidly changing. The re-definition of total-THC federally will be implemented on December 11, 2026. Texas took a different route and had its Total THC policy go into effect on March 31, 2026. THCA is prohibited in Arkansas, Idaho, Mississippi, and North Dakota. Verify current local law before purchasing.