In the 2000s, cannabis breeding spread globally with the rise of medical marijuana and later legalization. The decade saw further hybridization of 90s classics, giving birth to some of the most widely grown strains ever. Commercial “all-star” strains emerged, often valued for high THC and large yields, and sometimes developed specifically for the new American dispensary markets. A few highlights from this era:
Blue Dream
Lineage: Blueberry × Haze
A West Coast legend that surfaced around 2003 in California. Blue Dream is a 50/50 hybrid of Blueberry × Haze. It inherited Blueberry’s sweet berry flavor and balanced it with Haze’s clear cerebral uplift. With ~18% THC, Blue Dream delivers relaxed euphoria without heavy sedation. It became incredibly popular among both medical patients and commercial growers for its high yields and broad appeal. By the late 2000s–2010s, Blue Dream was reportedly the #1 most-grown strain in several legal states. Even as a clone-only strain, its consistency and sunny, creative high made it a “Blue” family successor to its 90s parent, Blueberry. (Notably, lab tests often find a touch of CBD in Blue Dream, ~1–2%, which may contribute to its smooth effects.)
OG Kush Family Expansion
Lineage: Various OG Phenotypes
The 2000s saw OG Kush (’90s) spread and mutate into many regional phenotypes and spin-offs. Notably Bubba Kush (an OG-related indica with a coffee-chocolate flavor) became a hit in the early 2000s – legend says it came from an OG Kush cross pollination in ’96, stabilized by 2001. SFV OG, Tahoe OG, Ghost OG, etc. were prized clone cuts of OG Kush circulating through California’s medical scene. This era also introduced pre-98 Bubba and Master Kush widely to dispensaries. All these are essentially variants or relatives of the original Kush lines, showing how a single 90s strain (OG) gave rise to an entire “OG” dynasty by 2010. These Kush derivatives typically delivered strong pain relief, appetite stimulation, and couch-lock, solidifying “Kush” as a byword for potent indica weed.
Sour Diesel & Chemdawg Spawn
Lineage: Sour Diesel × various
East Coast Sour Diesel (ECSD) remained a sought clone, and diesel hybrids appeared. For example, NYC Diesel by Soma in the early 2000s crossed Sour Diesel with an Afghan/Hawaiian – winning multiple Cups and spreading the grapefruit-fuel aroma in Amsterdam. Chemdawg cuts also gave rise to “Chem D” and “Chem 4”, which some breeders used to create new seeds. One such descendant was Stardawg (Chem 4 × Tres Dawg) released in 2011, which carried Chem’s potency into a new decade. These illustrate how Chemdawg’s lineage kept branching.
Amnesia Haze
Lineage: South Asian Indie × Cambodian
A prime example of a 2000s Amsterdam hybrid, Amnesia Haze (by Soma Seeds) combined Southeast Asian sativa genetics (Thai, Cambodian) with Jamaican and Afghani influences, producing a fruity high-THC sativa that won the 2004 Cannabis Cup. It became a coffeeshop favorite for its soaring, long-lasting psychoactive high. “Amnesia” as a strain name became so popular in Europe that many Haze-heavy hybrids adopted it (e.g. Amnesia Lemon, Amnesia Kush). This underscores the continued influence of Haze genetics into the 2000s, blending with other lines for improved flavor and faster flowering.
Granddaddy Purple & Cherry Pie
Lineage: GDP × Durban Poison
In 2003 Ken Estes introduced Granddaddy Purple (GDP), combining Purple Urkle × Big Bud, which offered sedative strength and grape candy flavor wrapped in deep purple buds. GDP became a staple of the “Purple” craze, particularly for patients needing appetite stimulation or sleep aid. A few years later, Cherry Pie arrived (circa 2010, but using 2000s genetics: GDP × Durban Poison). Cherry Pie had sweet berry dough terpenes and a balanced high – another step toward the dessert/candy trend. These strains show how the Purple family from the ’90s was now being crossed with other lines (Durban, OG, etc.) to create novel flavors.
Gorilla Glue #4 (GG4)
Lineage: Chem Sis × Sour Dubb × Chocolate Diesel
Discovered in 2013 (slightly beyond the ’00s, but its parents were 2000s strains), GG4 became an award-winning hybrid known for insanely sticky resin (hence “glue”). It resulted from a Chem Sis × Sour Dubb cross that accidentally pollinated; the breeder Joesy Whales kept cut #4. GG4 combined Chem’s potency with Chocolate Diesel and Sour Dubb influences, testing 25–30% THC. Its emergence in 2014 (won 2014 LA Cup) symbolized the new wave of U.S. hybrids that weren’t from Dutch seedbanks but rather homegrown American breeding. GG4’s “diesel chocolate pine” flavor and knockout couch-lock high made it an instant classic that spawned many subsequent crosses. (While GG4 is post-2010, it’s worth noting as a transitional strain from the older Chem/Diesel lineage into the modern era.)
By 2010, virtually all famous “building block” genetics were intermingling. Breeders had combined Skunks, Hazes, Kushes, Diesels, Purples, etc. in every which way. This led to an explosion of creatively named strains, especially as cannabis entered mainstream culture. The late 2000s set the stage for the “cookie” and “candy” strain revolution of the 2010s, where flavor and branding became as important as pedigree.