Sour Diesel x Chemdog #4 crosses Sour Diesel to Chem 4, the East Coast benchmark for aggressive chemical fuel against one of the founding phenotypes out of the 1991 Chem seed lot. Neither is a filler parent, which is why this pairing is worth a pack rather than a look. Every parent CSI use is a cut they keep alive themselves, so nothing in this pack is a reconstruction of a famous name.

Sour Diesel sits on the seed side here, Chem 4 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: Sour Diesel. The East Coast benchmark for aggressive chemical fuel. Built from most likely Chemdog 91 crossed to a Super Skunk in 1990s New York.
• Father: Chem 4. One of the founding phenotypes out of the 1991 Chem seed lot. Given as one of thirteen seeds from the 1991 Grateful Dead bag.
• Why it is worth a pack rather than a look. The two sides are far enough apart that seedlings genuinely differ. That range is the product.

Flavor and Aroma Profile

Two profiles that stay distinguishable rather than collapsing into one.

• The Aroma. Aggressively chemical and pungent with greasy resin from the Sour Diesel side, against diesel fuel and chemical funk over sharp earth from the Chem 4 side.
• The Taste. Solvent and sour, greasy up front, turning to fuel and sour earth, mouth-coating through the exhale.

The two halves, side by side

• They are not on the same clock. Sour Diesel runs ten to eleven weeks, with faster plants nearer sixty-seven days; Chem 4 runs seven to eight weeks, and up to ten by phenotype. Across a pack that gap shows up as plants finishing days or weeks apart.
• Where the nose comes from. One side gives aggressively chemical and pungent with greasy resin; the other gives diesel fuel and chemical funk over sharp earth. Plants landing in the middle are the keepers.
• Two frames in one pack. Sour Diesel is tall and lanky with wide internodal spacing, heavy early stretch, rated moderately challenging. Chem 4 is stretches once flipped; medium height with strong lateral branching and tight internodes when crossed out. Decide which suits your room before you flip, because you get both.
• They pull differently. Growers put Sour Diesel at head-forward and energetic and Chem 4 at alert and head-forward. Which end a plant lands on is the main variable.

Cultivation and Growth Traits

• Plant Structure. The two parents disagree here, so plan for range. Sour Diesel is tall and lanky with wide internodal spacing, heavy early stretch, rated moderately challenging. Chem 4 is stretches once flipped; medium height with strong lateral branching and tight internodes when crossed out.
• Veg and stretch. Set the frame while it is cheap to do. Anything you fix after the flip costs you flower sites.
• Flowering Time. The parents are not on the same clock. Sour Diesel runs ten to eleven weeks, with faster plants nearer sixty-seven days, Chem 4 seven to eight weeks, and up to ten by phenotype. Judge each plant on trichomes rather than pulling the room together.

Effects and Experience

• The Mind. Growers describe Sour Diesel as head-forward and energetic.
• The Body. Chem 4 is reported as alert and head-forward, and that is the side supplying the weight here.

In the pack

7 feminized seeds per pack. Feminized seeds from Humboldt CSI. Humboldt CSI are preservationists before they are breeders - most of what they release is a clone somebody has kept alive by hand for years, put into seed so it stops depending on one grower staying in the game. That is what you are buying into here. Authentic Humboldt CSI genetics.