
Free Seeds With Every Order
Choose your free strains, no mystery seeds. Learn more
Yumboldt Feminized
Mellow feminized indica with relaxed and sleepy effects and tight node spacing. Ideal for intermediate growers seeking balanced potency and manageable training.
βFlavor:Grape, musky kush, sweet spice
Grower tip: Support heavy colas with stakes as they mature
Premium stabilized genetics Β· germination guaranteed
Ready to grow this strain?
Free Seeds With Every Order
Choose your free strains, no mystery seeds. Learn more
About Yumboldt Feminized
The genetic expression of Yumboldt, a 71/29 indica, varies meaningfully across phenotypes. Most seeds from this line produce the dominant phenotype: a compact, bushy plant with broad fan leaves and golf-ball-dense flowers that pack on weight in the final two weeks. But expect variation, roughly 1 in 4 plants will lean slightly more toward the sativa parent, showing more stretch and airier flower structure. THC testing at 15% across phenotypes, with Myrcene consistently dominant.
Genetic Expression in the Grow Room
The dominant phenotype, which appears in roughly 70-75% of seeds, produces a compact, symmetrical plant with broad internodes and heavy lateral branching. Fan leaves are wide and dark green, typical of the indica heritage. Flower clusters form tight, round colas that pack on weight noticeably in the final 10 days before harvest.
The minority phenotype leans the other direction and may surprise growers expecting uniformity. Flowering completes in 9-11 weeks across phenotypes. Yield: 350-450g/mΒ² indoor, 600-800g/plant outdoor. Height: Medium (3-4 ft). Rated intermediate, the phenotype variation adds a layer of interest without adding significant difficulty. Growing from feminized seeds.
What Users Report
Yumboldt at 15% THC produces relaxed, sleepy, happy sensations that users consistently describe as physically comforting without being immobilizing at moderate doses. The relaxation builds gradually, noticeable within 10 minutes, settling fully by the 20-minute mark, and sustaining for 2-3 hours. The Myrcene/Humulene terpene pairing gives this strain a distinctive effect signature that experienced users recognize as different from other indicas at similar THC levels.
Best suited for evening use, unwinding after a long day, and situations where deep physical relaxation is the goal.
Terpene Profile
Dominant terpenes: Myrcene (primary), Humulene (secondary), Linalool (tertiary). This combination produces a nose that develops complexity through the cure, expect the primary myrcene character to emerge first, with humulene and linalool notes adding layers over 3-4 weeks in jars.
Who Should Grow Yumboldt
This strain fits growers with at least one harvest behind them who want to step up in quality without dramatically increasing complexity. The photoperiod genetics give you control over vegetative growth time and final plant size. Indoor growers in any US state can run this strain with standard tent equipment. Outdoor growers should match the 9-11 weeks flowering period to their frost-free window.
Effects
Best For
Strain Type
Strain Data Sheet
Packaging
Feminized Premium
Seeds
authenticity
lining
number
Related Strains

Mexican Haze Feminized
Buy Mexican Haze Feminized cannabis seeds online in the USA. Sativa strain with 17% THC. Effects: Euphoric, Focused, Energetic. Discreet shipping to all 50 states with germination guarantee.

Super Skunk Auto
Buy Super Skunk Auto cannabis seeds online in the USA. Indica strain with 20% THC. Effects: Euphoric, Happy, Relaxed. Discreet shipping to all 50 states with germination guarantee.

Heavy Duty Fruity Feminized
Buy Heavy Duty Fruity Feminized cannabis seeds online in the USA. Hybrid strain with 20% THC. Effects: Happy, Relaxed, Uplifted. Discreet shipping to all 50 states with germination guarantee.

New Glue Auto
Buy New Glue Auto cannabis seeds online in the USA. Indica strain with 23% THC. Effects: Euphoric, Happy, Tingly. Discreet shipping to all 50 states with germination guarantee.
Yumboldt Feminized, Cannabinoid & Terpene Reference
Reference ranges aggregated from publicly-reported third-party lab data and breeder documentation. Total THC reported as max-potential (THC + 0.877 Γ THCA). Individual seed-lot expression may vary by 1-3 percent.
Yumboldt Feminized, Aggregated Grower Yield Reports
Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Yumboldt Feminized feminized seeds. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| Outdoor, balcony, 5-gal fabric pot | 477g |
| Outdoor, greenhouse, supplemental light | 477g |
| 3Γ3 tent, 400W LED, LST | 357g |
Yumboldt Feminized, Sourcing & Genetics
Yumboldt Feminized was first stabilized in Amsterdam coffee-shop circles in the 2000s and adapted to American growing conditions through North American breeding programs.
Cold-tolerant; performs well in short-season Northern states (ME, VT, MN, WI). Indoor cultivation works anywhere.
Yumboldt Feminized, Breeder Information
Royal King GeneticsBred and stabilized in-house by Royal King Genetics , our internal breeding team. Every order is backed by our 95% germination guarantee. Read our full breeding process and about page.
Two backcross generations to the recurrent parent have fixed Yumboldt into a stable seed line. The cross-derived bud-to-leaf ratio expresses uniformly, no surprise-pheno hunting required out of the pack.
Take a clone-derived recent-era hybrid to a stable seed pack.
Selected for resin production, compact stature, and a clean indica terpene profile.
Royal King Genetics in-house mother stock, pollen drawn from a sibling male sourced from the same selected pheno population.