Strain library
20726 strains — flowering time, breeder, type, and lineage, with the environment targets our journal grades against.
Legendary Strains
Looking for strains with complete data?
1,191 of these 20,726 have a photo, flowering time, type and lineage on file — the ones worth planning a grow around.
A-Z Browse
212 strains under "U"
- U - Pink Kush (Dr. Underground)
- U-Dub (Unknown or Legendary)
- U-God (Life's Blood)
- U2 (Mr. Nice)
- UBC Chemo (BC Bud Depot)
- UBC Chemo (Clone Only Strains)
- UBC Chemo (Federation Seeds)
- Ube (Taylormade Selections)
- Uber (Cannarado Genetics)
- Uber Candy Haze (Dutch Flowers)
- Uber Dawg (Pisces Genetics)
- Udder Madness (Solfire Gardens)
- UFC (Swamp Donkey Seeds)
- UFO (Coastal Seed)
- UFO Cookies (Sin City Seeds)
- UFO x Bubba Kush (Ripper Seeds)
- Ugly Unicorn (Jinxproof)
- UGORG#1 (Underground Orig.)
- UHF (Red Scare)
- Uk Auto-Ammi (London City Genetics)
- UK Auto-PENG (London City Genetics)
- UK Blues (Lineage Genetics)
- UK Bluez (London City Genetics)
- UK Cheese (CSI Humboldt)
- UK Cheese (Elev8 Seeds)
- UK Cheese (Green Fantasy)
- UK Cheese (Shaman)
- UK Cheese (UKSeedCo)
- UK Cheese Auto (Humboldt Seed Org.)
- UK Cheese Auto (Shaman)
- UK Cheese x Aloha WW (Blazing Pistileros)
- UK Cheese x Animal Cookies (Ripper Seeds)
- UK Cheese x Zombie Kush (Ripper Seeds)
- UK Chem (Connoisseur Genetics)
- UK Exo (London City Genetics)
- UK Home Made Cookie's (Trump Seeds)
- UK Monkey (Wanted Seeds)
- UK Psychosis (London City Genetics)
- UK Scottish Power (London City Genetics)
- UK-47 (London City Genetics)
- UK08 (Unknown or Legendary)
- UK47 (Tempa Genetics)
- Ukiah Berry (Blackbird Preservations)
- Ukraine Hybrid (Original Strains)
- Ukraine Ruderalis (Original Strains)
- Ulduz (Bald man Lala)
- Ultimate AK (Sumo Seeds)
- Ultimate Banana Kush (Dankonomics Genetics)
- Ultimate Chem (Unknown or Legendary)
- Ultimate Chem 08 (Thunderfudge)
- Ultimate Chem 2010 (Riot Seeds)
- Ultimate Chem 818 (Thunderfudge)
- Ultimate Circle (Wanted Seeds)
- Ultimate Frosting (Smokingrower)
- Ultimate Indoor (Capricorn Seed Co.)
- Ultimate Kush (Cannarado Genetics)
- Ultimate Lav (Exotic Genetix)
- Ultimate Lemon Bubba (Thunderfudge)
- Ultimate OG (Goat & Monkey)
- Ultimate Peak (Capricorn Seed Co.)
- Ultimate Purple (BC Bud Depot)
- Ultimate Thai (Hemcy Genetics)
- Ultra 85 (Olympic Seeds)
- Ultra Alien (NW Roots)
- Ultra Chem SFV (Unknown or Legendary)
- Ultra Critical (Azarius Seeds)
- Ultra Early Love (Reeferman)
- Ultra Fizz (Calyx Bros.)
- Ultra Freshies (Cult Classics Seeds)
- Ultra Genetics - MAK 10 (Ultra Genetics)
- Ultra Glue (Lady Sativa Genetics)
- Ultra Grapefruit (Ultra Genetics)
- Ultra High Frequency (Red Scare)
- Ultra La Chem (Bean Boyz Genetics)
- Ultra Lemon Haze (Auto Seeds)
- Ultra Lemon Haze (Stone Free Seeds)
- Ultra Power Plant (Victory Seeds)
- Ultra Skunk (Dutch Passion)
- Ultra Sonja (GrindHouse)
- Ultra Violet Haze (SnowHigh Seeds)
- Ultra Violet Poison (Bio Bomb)
- Ultra White Amnesia (M.O.C.)
- Ultrabrite (Thunderfudge)
- Ultrashack (FlowerPower)
- UltraSour (TH Seeds)
- Ultraviolence (Cult Classics Seeds)
- Ultraviolet (Samsara Seeds)
- Ultraviolet Eclipse (Enlightened Genetics)
- Ultraviolet Haze (TreeTown Seeds)
- UltraViolet OG (Archive Seed Bank)
- UMME (Anesia Seeds)
- Una Fria (Wyeast Farms)
- Unabomber (Capitan's Connection)
- Unapologetic (Noble Genetics)
- Unbroken Chain (Mycotek)
- Uncirculated OG (In House Genetics)
- Uncle Ebenezer (Happy Little Treez)
- Uncle John's Headband (Magick Beans)
- Uncle Lucious Lemonade (GreenMan Organics)
- Uncles Magoo (Patchwerk Genetics)
- Uncut Gems (Triple C)
- Under Dawg (Top Dawg)
- Under Dawg #1 (Top Dawg)
- Under Dawg D (Top Dawg)
- Undercover Butter (FCSC)
- Underdawg (Loompa Farms)
- Underdawg Cake (TH Seeds)
- Underdawg OG (Clone Only Strains)
- UnderDawg OG (TH Seeds)
- Underdog OG (Loompa Farms)
- Underdog Urkle (Loompa Farms)
- Underground Originals - KillerSkunk (Underground Originals)
- Underground Seeds Collective - Cheesetral (Underground Seeds Collective)
- Underground Seeds Collective - Colombian Gold 72 (Underground Seeds Collective)
- Underground Seeds Collective - Jamaican Kush (Underground Seeds Collective)
- Underground Seeds Collective - Nepalma (Underground Seeds Collective)
- Undertaker (ScareCrow Seeds)
- Unforgettable (Beyond Top Shelf)
- Unholywood (Flight Time Genetics)
- Unicorn (Anomaly Seeds)
- Unicorn (Staykeyed Seeds)
- Unicorn Bacon (Anomaly Seeds)
- Unicorn Bacon (Staykeyed Seeds)
- Unicorn Berries (Mobties609)
- Unicorn Blood (Riot Seeds)
- Unicorn Cake (Sinisterslim)
- Unicorn Cakes (Cult Classics Seeds)
- Unicorn Cakes (Universally Seeded)
- Unicorn Cookies (Mobties609)
- Unicorn F2 (Anomaly Seeds)
- Unicorn Farts (H.B.K.)
- Unicorn Kush (Unicorn Boys)
- Unicorn Meat Pie (Bakery Genetics)
- Unicorn Milk (Bodhi Seeds)
- Unicorn Poop (ThugPug Genetics)
- Unicorn Pops (Aura Genetix)
- Unicorn Porn (Bakery Genetics)
- Unicorn Porn Star (HereWeGrow)
- Unicorn Rainbows (Universally Seeded)
- Unicorn Sherbert (Cult Classics Seeds)
- Unicorn Sherbert (Universally Seeded)
- Unicorn Shoes (Cult Classics Seeds)
- Unicorn Shoes (Universally Seeded)
- Unification (Cult Classics Seeds)
- Union Jack (Sagarmatha)
- United Seedbanks - Erdbeer (United Seedbanks)
- Unity (Bakery Genetics)
- Unknown Kush Early Version (Delicious Seeds)
- Unknown or Legendary - D-DNL (Unknown or Legendary)
- Unknown or Legendary - Dark Cross (Unknown or Legendary)
- Unknown or Legendary - Evania (Unknown or Legendary)
- Unknown or Legendary - Orange Cookies (Unknown or Legendary)
- Unknown or Legendary - Oregon Purple Thai (Unknown or Legendary)
- Unknown or Legendary - Snow Lotus (Unknown or Legendary)
- Unknown or Legendary - Sour Tsunami (Unknown or Legendary)
- Unknown or Legendary - Stardawg IX (Unknown or Legendary)
- Unknown or Legendary - Tres Dawg (Unknown or Legendary)
- Unknown or Legendary - TreStarDawg (Unknown or Legendary)
- Unknown or Legendary - Warhammer (Unknown or Legendary)
- Unknown or Legendary - West Coast Dog (Unknown or Legendary)
- Unknown or Legendary - White Dawg (Unknown or Legendary)
- Unknown or Legendary - Zinn (Unknown or Legendary)
- Unknown Strain (Original Strains)
- UP Kush (Andalucía Seeds)
- Up The Hill Creations - Red Velvet Cookies (Up The Hill Creations)
- Upapi (42)
- Uplift (Bodhi Seeds)
- Upper Cut (Oni Seed)
- Uppercut (Up The Hill)
- Uprising Seed Co - Cherry Clifton (Uprising Seed Co)
- Uprising Seed Co - Dosi Fire (Uprising Seed Co)
- Upside Boundcake (Green Team Genetics)
- Upside Down Cake #4 (Lit Farms)
- Upstream (Delicatessen)
- Uptown Clockstar (Riot Seeds)
- Uptown Girl (Omuerta Genetix)
- Uptown Haze (Unknown or Legendary)
- Uptown White Dawg (Riot Seeds)
- Uranai Baba Kush (Hisens Crew)
- Uranus Lemon Haze (Naledi Seeds)
- Urban Guerrilla (Freedom Seeds)
- Urban Poison (Nirvana)
- Urgam Valley (I.L.E.)
- Urkle Berry II (CannaVenture)
- Urkle Lemons (Skunk House Genetics)
- Urkle's Royale with Cheese (Secret Santa Genetics)
- Urkle91 (Goat & Monkey)
- Ursa Major (Unknown or Legendary)
- Ursula Berry F2 (Humminbird Genetics)
- UruWhite (Ketama Seeds)
- Uruzghani x Jack's Cookie (Forum Genetics)
- USA Hybrid (Original Strains)
- USA Indica (Original Strains)
- USA Mostly Indica (Original Strains)
- UTHC OG (Up The Hill)
- Utopia (Absolute Cannabis Seeds)
- Utopia Dreams (Goldenseed)
- Utopia Haze (Barneys Farm)
- UV-A (Rare Dankness)
- UVA (SubCool)
- UW (Clone Only Strains)
- UW Cookies (Slanted Farms)
- Uw Og (Slanted Farms)
- Uzbekistan (CH9 Female Seeds)
- Uzbekistan (Kannabia)
- Uzbekistan Hash Plant (Nomad Seed)
- Uzbekistan Indica (Original Strains)
- Uzbekistani Headstash (Red Scare)
- Uzbekistani Shit Show (Red Scare)
- Uzbekistani Thunderfuck (Red Scare)
- UzBlockistan (Red Scare)
- UZI (Yardie Seeds)
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.