MILF Rev’s Rave, Black Forrest F2 Sativa – True Energy

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Just wanted to share with you all today, a true old world jungle sativa variety. The Black Forrest F2, from Kingdom Organic Seeds. Does all the herb you smoke these days tend to knock you down? Make you tired? Sleepy even? Those types are most types actually. No matter how much real deal sativa they claim to have in them, they have been muddied up.

This baybee flowers for at least 15 weeks, so you have to be good at keeping plants happy in containers for extended periods. This can be easily done with skilled top dressings, like worm castings and chicken guano are favorites of mine for top dressings. The Churn (from my latest book) or basic lower PPM teas both work great as well. Outdoors she cray! These plants could easily get 20 feet tall outdoors if they were untopped and started a little early. Too much food is the only thing she really has a problem with. Other than that, she has a wide pH adaptation ability, very tolerant to heat, humidity, and drought. Check her…

The Fast Deets

NAME: Black Forrest F2 (soft bx1)
BREEDER: KOS
GROWING/BREEDING STYLE: True Living Organics (TLO)
P1 LINEAGE: Cherry Bomb x Vietnam Black
YIELD/SIZE: Excellent Yields
FLOWERING TIME INDOORS: 15 to 16 Weeks
SMELLS: Acrid, Nag Champa Incense, Black Licorice, and Cat Piss/Honey Oil, One-of-a-Kind Smells
FLAVORS: Same as Smells, Very Highly Exotic Smoke—Literally, One-of-a-Kind Terpene Profile
STRETCH: 2x to 3x
LIGHTING: MH/LED/T5
PHOTOPERIODS: Sprouting 16/8 (or 12/12 for first 10 days), Veg 18/6, Flowering 12/12
SATIVA/INDICA/RUDI RATIOS: About 95/5 Sativa/Indica, Extremely Sativa Dominant
HARVEST OUTDOORS: First Half of December – Northern Hemisphere
GERMINATION RATIO: 90%+
BREEDING STYLE: Regular Seeds – Using Real Males – No Selfing, Reversing, or Femming Used Anywhere in KOS’ Breeding Philosophy

Black Forrest F2—The Rundown

Let me first explain to you the F2/bx1 descriptor on this variety. The original Black Forrest was a straight up F1 hybrid, as you can read about below in more detail, but I made the original Black Forrest F1 almost 30 years ago. I germinated some a while back (2022), and at the same time I germinated 4 of my 6 remaining Vietnam Black landrace jungle sativa seeds. I found a stellar female Black Forrest F1 female—yowza, and, as luck would have it, 2 of my 4 Vietnam Black (VB) seeds sprouted. One of the VB sprouts was pretty weak out of the gate, as these VB seeds are more like 45 years old and were sent to me by my cousin who lives in Vietnam over 3 decades ago. But the one VB that remained was wicked strong and hearty and turned out to be a true stellar male.

So, this Black Forrest F2 (bx1) is a “soft” backcross back to the landrace Vietnam Black line. A hard backcross would be back to the original female/male VB individual that was an original P1 breeder. A hard backcross I label as Bx, a soft backcross I label as bx, FYI. The Black Forrest original F1 hybrid was my F3 Cherry Bomb (male) x Vietnam Black Sativa. This version really leverages the wild side of cannabis with an insane potency, seriously edgy and full of energy.

Black Forrest F2 (bx1), and F1 Lineage Breakdown

Male Breeder(s) Deets: 1 superior male of Vietnam Black jungle landrace sativa was the paternal contributor in this soft backcross. These seeds are about 40 years old, I planted 4 seeds and ended up with one insanely hearty awesome and healthy true male, with extremely high resin production potential, per its offspring. Noice!
Female Breeder(s) Deets: 1 Black Forrest female (crazy terpenes and resin production with beefy floral formation) was the maternal contributor in this cross. Uber high vigor and heartiness. Crazy levels of smelly.

Even in the original Black Forrest F1 hybrids, the Vietnamese landrace pretty much just ran all over the Cherry Bomb. I could barely see any Cherry Bomb even in the F1s. For the original F1 Black Forrest hybrids, I used the P1 male below…

The Original P1 Paternal (male) Breeder in the Black Forrest F1 hybrid generation, was my Hawaiian Cherry Bomb. The Cherry Bomb was an F3 that was comprised of 3 heirloom cultivars that are Hawaiian sativas Also, the legendary Cherry AK47.

Black Forrest F2 Growing Information

GROWER: The Rev

I would highly recommend you sprout these under a 12/12 photoperiod. Keep them under this photoperiod for their first 14 to 15 days above ground before moving to a vegetative photoperiod. This will allow you to sex them easily at the 30 days above ground point. In containers, I would HIGHLY recommend you flower clones in containers, and not seedling plants.

You should start these flowering shorter/smaller than you think you should, if these are happy plants the growth rates will blow your mind. I start them flowering under 400-watt lights at about 9 inches tall, topped to 4 or 6 mains. They finish up very close to 3 feet at harvest time. I would not recommend transplanting these once flowering has begun. Get them into their flowering containers about a week before flowering begins. If you transplant them once they have started resin production, the big available nitrogen boost of all the fresh new soil could easily cause these plants to put on some additional vegetative growth. That will, sadly, cause resin production to take a hit.

Even if you aren’t skilled enough yet to feel comfy growing these, just keep them sealed up light and air tight in your refrigerator and they will stay 80% viable for at least 20 years. Once you get your sativa container growing skills dialed in a bit you can break her out and experience the WoW!

Grower/Breeder Note

Clones of a plant are the same age the original mother plant is, or would have been, no matter how many clones of clones etc., you make. You dig?

Always allow plants to get at least 55 days old from sprouting, before starting to flower for maximum resin production. Plants grown from seed work much better outdoors in the ground than clones do. Alternately, clones work much better in containers than plants from seeds do. Sprout seeds in ambient temps of 75 – 85 deg. F. Obviously KOS always recommends organically growing our gear in living soil for the full appreciation of smells and flavors, among many other reasons—cheers!

Smoking Black Forrest F2 with Rev

If you pull this one off for the 16-week flowering time well, you will NEVER forget it. The potency is not only over the top, but it has this very unique edgy energy heavy facet. If you had to take her at, say 14 weeks, you would still have a fairly ass kicking sativa, but that last 2-weeks of the 16-week flowering time would take that potency way-way up. Not only will she utterly bake your ass, but the length of those effects (legs) will be several hours at least—she’s like a freight train—and she’ll take up to 20 minutes to even set-in after smoking. Spooky cool, LoL.

She can “creep up” on you, where you find yourself much higher than you though you were going to be. She is full on energy weeds, and staying in classic South East Asian sativa style, she can make you a little anxious, or paranoid if you tend to go there on powerful sativas. I’m not like that and I just get the energy. But I wouldn’t want to be in a dense forest at night high on this, heh heh. Nope.

As breeding stock these are sublime, and truly chalked full of highly adaptive survivor genetic expressions. The terpenes are literally one of a kind in my experience, nothing else smells or tastes like Vietnamese Jungle Sativa baybee.