Chem 4 Cookies (Chem 4 x Forum Cut Cookies) puts Chem 4 over Girl Scout Cookies. One is one of the founding phenotypes out of the 1991 Chem seed lot; the other is the specific Cookies clone that the dessert wave was built on, not the family generally. Two very different plants, and the point of the cross is what sits between them. Humboldt CSI work almost entirely from clones they hold themselves, so both sides of this are the real thing rather than a seed-line approximation of it.
The number in Chem 4 is a specific plant, not a decoration. Humboldt CSI grow a population out, keep the individuals worth keeping and number them, so Chem 4 is one identified selection rather than Chem in general. A pack naming a different number is a different mother. The number in Chem 4 is a specific plant, not a decoration. Humboldt CSI grow a population out, keep the individuals worth keeping and number them, so Chem 4 is one identified selection rather than Chem in general. A pack naming a different number is a different mother.
Chem 4 sits on the seed side here, Girl Scout Cookies on the pollen side. If you have seen these two names paired the other way round, that is a different pack and not this one.
Genetic Lineage
- Mother: Chem 4. One of the founding phenotypes out of the 1991 Chem seed lot. That one comes from one of thirteen seeds from the 1991 Grateful Dead bag.
- Father: Girl Scout Cookies. The specific Cookies clone that the dessert wave was built on, not the family generally. It traces back to generally given as OG Kush crossed to a Durban line; the Forum cut was an S1 found in bagseed and circulated through the ICMag forums around 2010. CSI publish a caution that their Cookies hybrids can express instability under some conditions while still producing plenty of good plants.
- What to expect across a pack. Two distinct parents means real variation in frame, finish and nose. Select early and take cuttings off anything you would want again.
Flavor and Aroma Profile
Two distinct smells, and a pack will give you both plus everything between.
- The Aroma. The Chem fuel and sour earth, with its own sharper edge from the Chem 4 side, against sweet cookie dough and vanilla cream with a faint mint, over an earthy Kush base from the Girl Scout Cookies side.
- The Taste. Fuel and earth on the inhale, turning sour up front, turning to doughy and sweet with vanilla late, finishing earthier through the exhale.
What each side brings
- Timing splits the pack. One parent wants seven to eight weeks, and up to ten by phenotype, the other nine to ten weeks. Expect the fast plants down well before the slow ones are ready.
- Where the nose comes from. One side gives diesel fuel and chemical funk over sharp earth; the other gives sweet cookie dough and vanilla cream with a faint mint, over an earthy Kush base. Plants landing in the middle are the keepers.
- Two frames in one pack. Chem 4 is stretches once flipped; medium height with strong lateral branching and tight internodes when crossed out. Girl Scout Cookies is tight, heavy, dense flower rather than an open frame. Decide which suits your room before you flip, because you get both.
- Opposite ends. Chem 4 is reported as alert and head-forward; Girl Scout Cookies as even rather than racy; settling. The cross sits somewhere between and moves plant to plant.
Cultivation and Growth Traits
- Plant Structure. The two parents disagree here, so plan for range. Chem 4 is Chem-family build - open and stretchy rather than compact. Girl Scout Cookies is tight, heavy, dense flower rather than an open frame.
- Vegetative Phase and Stretch. Shape the plant before the flip. Correcting a frame in week six is harder work than setting it in week two.
- Flowering Time. The parents are not on the same clock. Chem 4 runs seven to eight weeks, and up to ten by phenotype, Girl Scout Cookies nine to ten weeks. Judge each plant on trichomes rather than pulling the room together.
Effects and Experience
- The Mind. Growers describe Chem 4 as alert and head-forward.
- The Body. Girl Scout Cookies is reported as even rather than racy; settling, and that is the side supplying the weight here.
In the pack
Feminized seeds from Humboldt CSI. The point of their catalogue is access - cuts that otherwise only move between growers who already know each other, put into a form you can actually buy. Sold as authentic Humboldt CSI.
Chem 4 Cookies (Chem 4 x Forum Cut Cookies) – Humboldt CSI
- Brands CSI Humboldt
- Product Code: 00065
- Availability: 3
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$100.00
Tags: cannabis seeds, feminized seeds, Humboldt CSI, CSI Humboldt, Chem 4, Girl Scout Cookies, strain guide

