The Official Cannabis Independent strain guides
Chemdawg No 06 Shop
The Official Cannabis collection · sheet 06No 06 · ChemdawgGrow

Growing

Growing Chemdawg: flowering time, yield and breeder specs

The Chemdawg clone finishes in about 63–70 days indoors, grows tall, stretches hard in flower and smells strongly of diesel; Weedmaps rates it moderate to difficult.1 Seed versions run about 8–10 weeks, and most of them are not the original line.2,3,4,5

Breeder and nursery specs side by side

Source and versionGenetics statedFloweringYieldHeight and difficulty
Weedmaps (database, the clone)The Chem 91 SkVA cut, clone-only163–70 days indoorsModerate to substantial with skill; heavy resinTall, stretches considerably; moderate to difficult1
Prime Cuts Nursery, Chemdawg 91 clone (California)The original keeper phenotype from the 13 seeds69–10 weeks300–450 g/m² indoors; 500–550 g per plant outdoorsTall, doubles or triples in the first three weeks of flower; moderate to advanced6
Humboldt Seed Organization, feminizedBred from the Chem 91 elite clone; 60% indica265–70 days; mid-October outdoors400–600 g/m² indoors; 2–3 kg per plant outdoorsAbout 3 m outdoors2
Green House Seed Co., feminized “Chemdog”OG Kush × Sour Diesel; 70% indica3About 9 weeks; first week of October outdoorsUp to 800 g/m² indoors; up to 1,000 g per plant outdoors150–170 cm outdoors3
Crop King Seeds, feminized “Chemdawg”Sour Diesel × OG Kush; balanced hybrid49–10 weeks; late September to early October outdoors450 g/m² indoors; 700 g per plant outdoors5–8 ft4
Crop King Seeds, feminized “Chemdog”Thai sativa × Nepalese sativa77–10 weeks; October outdoors300 g/m² indoors; 400 g per plant outdoorsUnder 4 ft; moderate7
Inner Earth Seeds, feminizedNot stated; “mainly indica”; three phenotypes88–9 weeks; early October outdoorsNot statedAbout 110 cm indoors, 200 cm outdoors8
Top Dawg Seeds (Lockbox Seeds listing)Nepalese × Thai (as listed)963–70 days450–550 g/m²; 500–700 g per plant120–150 cm; moderate9
ILGM, feminizedNot stated; sativa-dominant10Not stated“Yield heavy” (no figure)Advanced10
DNA Genetics (grow guide)Unknown118–9 weeks indoorsHighMedium to tall11

Breeder, seller and nursery figures are their own claims, not independent tests. Leafly’s grow block gives 7–9 weeks and 25–30 g per plant, but it shows the identical text on its Chemdawg, Chem 91 and Chemdawg #4 pages, so treat it as a template rather than a measurement.12,13,14

What the plant is like

Expect a tall plant that stretches hard once flowering starts: Weedmaps says it grows tall and stretches considerably, and Prime Cuts Nursery says its Chemdawg 91 clone doubles or triples in height in the first three weeks after the flip and builds elongated, spear-shaped colas that need trellising or staking by mid-flower.1,6 The nursery recommends early screen-of-green tucking, topping or aggressive low-stress training; Leafly says the plant trains well as a multi-branched plant or in a sea of green.6,12

Buds are described as rock-hard and extremely compact (SeedFinder), light green with orange pistils and heavy resin (Leafly’s Chemdawg #4 page, Weedmaps), with a diesel aroma that Weedmaps says makes stealth growing tough.1,5,14

What to watch for

Mold is the common warning. DNA Genetics says the dense buds are prone to mold and suggests 40–50% relative humidity and 68–80 °F during flowering with good airflow; Prime Cuts Nursery says humidity must drop below 45% by late flower to avoid botrytis.6,11 Humboldt Seed Organization, by contrast, calls its seed version resistant to moisture and suited to temperate, dry, Mediterranean climates.2

Odor control is the other: the plant’s diesel funk makes discreet growing hard, according to Weedmaps, and DNA Genetics recommends carbon filtration.1,11

Clone-only cuts versus seeds

The original cuts exist only as clones: SeedFinder says the original was never sold as feminized seed, and Weedmaps calls the Chem 91 SkVA cut clone-only.1,5 Licensed nurseries sell cuttings in some states, such as Prime Cuts Nursery’s Chemdawg 91 in California, and Chemdog grows his own mother plant for Smash Hits in Massachusetts.6,15,16

Seeds sold as Chemdawg fall into two groups. Some are lines bred from a cut: Humboldt Seed Organization’s feminized Chemdawg from the Chem 91 clone, Top Dawg’s Chem 91 BX and Reservoir’s Chemdog D BX#1.2,17,18 Others are new crosses that reuse the name: Green House’s Chemdog and Crop King’s Chemdawg are listed as OG Kush × Sour Diesel, Crop King’s Chemdog as Thai × Nepalese, and Inner Earth and ILGM name no parents at all.3,4,7,8,10

Seeds and the law in the US

Under the amended federal definition of hemp, viable seeds from cannabis plants above 0.3% total THC, including THCA, are not hemp.19 Congress delayed that exclusion, with most of the new definition, from Nov 12 to Dec 11, 2026; only the exclusion of products with cannabinoids the plant cannot produce naturally starts on Nov 12.20 Home cultivation rules are set by each state. This site does not sell seeds.

Sources

  1. Weedmaps, Chemdog (aka Chem 91) strain page. Accessed Oct 3, 2026.
  2. Humboldt Seed Organization, Chemdawg (feminized seeds, from the Chem 91 elite clone). Accessed Oct 3, 2026.
  3. Green House Seed Co., Chemdog (feminised). Accessed Oct 3, 2026.
  4. Crop King Seeds, Chemdawg feminized seeds. Accessed Oct 3, 2026.
  5. SeedFinder, Chemdog (Unknown or Legendary). Accessed Oct 3, 2026.
  6. Prime Cuts Nursery, Chemdawg 91 (clone listing). Accessed Oct 3, 2026.
  7. Crop King Seeds, Chemdog feminized seeds. Accessed Oct 3, 2026.
  8. Inner Earth Seeds, Chemdawg feminized. Accessed Oct 3, 2026.
  9. Lockbox Seeds, Chemdawg strain (Top Dawg Seeds). Accessed Oct 3, 2026.
  10. ILGM, Chemdawg feminized seeds. Accessed Oct 3, 2026.
  11. DNA Genetics, Chemdawg cannabis strain (2025-06-23). Accessed Oct 3, 2026.
  12. Leafly, Chemdawg (aka Chemdog) strain information. Accessed Oct 3, 2026.
  13. Leafly, Chem 91 strain information. Accessed Oct 3, 2026.
  14. Leafly, Chemdawg #4 strain information. Accessed Oct 3, 2026.
  15. Amherst Bulletin, Late bloomer: a decade after police raided his grow operation, Gregory “Chemdog” Krzanowski is finding prosperity in the cannabis industry (2021-08-02). Accessed Oct 3, 2026.
  16. Smash Hits Cannabis, About us. Accessed Oct 3, 2026.
  17. SeedFinder, Chem 91 BX (Top Dawg Seeds). Accessed Oct 3, 2026.
  18. SeedFinder, Chemdog D BX#1 (Reservoir Seeds): lineage. Accessed Oct 3, 2026.
  19. Congressional Research Service, Changes to the statutory definition of hemp and implications for agricultural policy (IF13136) (2026-09-28). Accessed Oct 3, 2026.
  20. U.S. Government Publishing Office, Continuing Appropriations and Extensions Act, 2027 (P.L. 119-103), sec. 2019. Accessed Oct 3, 2026.