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Buy Cannabis Seeds Online in the USA — 1,600+ Premium Strains

Royal King Seeds is your trusted American source for premium cannabis seeds. Browse our complete collection of over 1,600 feminized, autoflowering, indica, sativa, hybrid, and CBD strains with discreet shipping to all 50 states. Every seed order includes our 95% germination guarantee, competitive pricing, and expert growing support for cultivators of all experience levels across the United States. Whether you are a first-time grower starting with easy autoflowers or an experienced cultivator chasing maximum potency, our catalog has the right genetics for your goals. Use our strain finder quiz to get personalized recommendations or explore our yield calculator to estimate your harvest.

All strains in this collection are bred & stabilized in-house by Royal King Genetics

1677 strains available

Total Strains1,600+
Germination Rate95%
ShippingAll 50 States
Free ShippingOrders $150+

Shop All Cannabis Seeds catalog at a glance

Our shop all cannabis seeds collection currently holds 1677 strains in active inventory with verified THC content ranging from 0.5% at the low end to 33% at the high end (median 20%). Average flowering time across the catalog is 9 weeks from 12/12 flip for photoperiod genetics or seed-to-harvest for autoflowers.

Strains
1677
THC range
0.5-33%
Median THC
20%
Avg flower
9wk
  • Feminized photoperiod: 1254 strains (75% of the catalog) — single-flip genetics with the largest single-plant yields.
  • Autoflowering: 422 strains (25% of the catalog) — finishes 8-10 weeks seed-to-harvest, no photoperiod switch.
  • Indica-dominant: 817 strains — body-led effects, compact structure, Myrcene-Caryophyllene terpene signature typical.
  • Sativa-dominant: 235 strains — cerebral effects, taller plants, Limonene-Pinene-Terpinolene profiles common.
  • Balanced hybrid: 580 strains — mixed indica/sativa lineage, ranges from 60/40 to 50/50 splits depending on phenotype.
  • CBD-rich therapeutic: 45 strains — elevated CBD with proportionally lower THC, suited to medical-focused growers.
  • Alphabetical lineup starts with: $100 OG, 13 Dawgs, 24k Gold — see the full grid below for filters, lab data and grower reports.

Shop All Cannabis Seeds — Browse All Strains

1677 strains
5 Alive cannabis seeds packaging — Royal King Seeds USA
Sativa
THC 29%
⚡ High Potency

5 Alive Feminized

EuphoricEnergeticCalm
$14.99USD
Red Bruce cannabis seeds packaging — Royal King Seeds USA
Indica
THC 15%
🌙 Sleep Aid

Red Bruce Feminized

RelaxedSleepyHappy
$10.99USD
Silver Kush cannabis seeds packaging — Royal King Seeds USA
HybridAuto
THC 20%
😊 Beginner Pick

Silver Kush Auto

HappyRelaxedUplifted
$14.99USD
CBD Critical Cure cannabis seeds packaging — Royal King Seeds USA
CBD
THC 0.8%
🧘 Relaxing

CBD Critical Cure Feminized

FocusedCalm
$12.49USD
Golden Gate Haze cannabis seeds packaging — Royal King Seeds USA
Sativa
THC 20%
🎨 Creative

Golden Gate Haze Feminized

HappyEnergeticCreative
$13.49USD
Dream Berry cannabis seeds packaging — Royal King Seeds USA
Indica
THC 16%
🎁 BOGO — Buy 1 Get 1

Dream Berry Feminized

EuphoricCreativeCalm
$14.49USD
Cannalope Haze cannabis seeds packaging — Royal King Seeds USA
Sativa
THC 20%
🎨 Creative

Cannalope Haze Feminized

CreativeHappyUplifted
$11.49USD
Tembo Kush cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 22%
📈 High Yield

Tembo Kush Feminized

RelaxedHappyEuphoric
$10.99USD
Terminator OG cannabis seeds packaging — Royal King Seeds USA
Indica
THC 23%
🌙 Sleep Aid

Terminator OG Feminized

RelaxedSleepyHappy
$15.49USD
Lucid Blue cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 26%
⚡ High Potency

Lucid Blue Feminized

FocusedCalm
$13.49USD
Cadillac Purple cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 25%
⚡ High Potency

Cadillac Purple Feminized

HappyRelaxedSleepy
$15.99USD
Lavender Jones cannabis seeds packaging — Royal King Seeds USA
Indica
THC 18%
📈 High Yield

Lavender Jones Feminized

EuphoricCalm
$12.99USD
Pink Panther cannabis seeds packaging — Royal King Seeds USA
Indica
THC 22%
🎨 Creative

Pink Panther Feminized

EuphoricCreativeCalm
$15.99USD
Power Plant cannabis seeds packaging — Royal King Seeds USA
Sativa
THC 19%
🎨 Creative

Power Plant Feminized

HappyEnergeticCreative
$12.49USD
Afgooey cannabis seeds packaging — Royal King Seeds USA
Indica
THC 20%
🌙 Sleep Aid

Afgooey Feminized

RelaxedSleepyHappy
$12.99USD
Purple OG Kush cannabis seeds packaging — Royal King Seeds USA
Indica
THC 20%
🌙 Sleep Aid

Purple OG Kush Feminized

RelaxedEuphoricCalm
$15.99USD
LSD cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 23%
🎨 Creative

LSD Feminized

EuphoricCreativeFocused
$12.49USD
Sharksbreath cannabis seeds packaging — Royal King Seeds USA
Indica
THC 18%
🌙 Sleep Aid

Sharksbreath Feminized

RelaxedSleepyHappy
$14.99USD
Satellite OG cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 22%
📈 High Yield

Satellite OG Feminized

RelaxedHappyEuphoric
$12.99USD
🌱
IndicaAuto
THC 22%
😊 Beginner Pick

Lee Roy Auto

EuphoricCreativeCalm
$14.99USD
Black Ice cannabis seeds packaging — Royal King Seeds USA
Indica
THC 22%
🌙 Sleep Aid

Black Ice Feminized

RelaxedSleepyHappy
$11.49USD
Goji OG Haze cannabis seeds packaging — Royal King Seeds USA
Indica
THC 25%
⚡ High Potency

Goji OG Haze Feminized

EuphoricCreativeEnergetic
$11.99USD
Katsu Bubba Kush cannabis seeds packaging — Royal King Seeds USA
Indica
THC 24%
🌙 Sleep Aid

Katsu Bubba Kush Feminized

RelaxedEuphoricCalm
$12.49USD
Chem Crush cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 20%
📈 High Yield

Chem Crush Feminized

EuphoricCalm
$15.99USD
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Why Buy Cannabis Seeds From Royal King Seeds?

Royal King Seeds combines an extensive seed catalog with genuine customer care that sets us apart from other US-based seed banks. Our genetics are sourced from reputable breeders worldwide, stored in climate-controlled conditions, and shipped in protective packaging to maintain viability. American growers trust us because we deliver consistent results, transparent strain information, and responsive support that helps you succeed from germination through harvest. With over 200,000 orders fulfilled since 2019, we have the track record to back our promises.

Cannabis Seed Types Available for US Growers

Our catalog includes feminized cannabis seeds (guaranteed 99.9% female plants), autoflowering seeds (flower automatically in 8-10 weeks), CBD-rich varieties for therapeutic growers, high-THC strains for experienced cultivators, and curated mix packs for those who want variety. Whether you are growing indoors in a small apartment in New York or outdoors in the California sun, we have genetics suited to your environment and goals. Use our yield calculator to estimate your harvest based on your specific setup.

How to Choose the Right Cannabis Seeds

Consider your growing environment (indoor vs outdoor), experience level, desired effects, and your state climate. Beginners should start with autoflowering seeds — they flower automatically, stay compact, and finish in 8-10 weeks. Intermediate growers often prefer feminized photoperiod seeds for larger yields and more control. Advanced cultivators may explore exotic genetics, high-THC strains, or breeding projects. Our strain finder quiz helps you narrow down the best options in under 60 seconds.

Autoflower vs Feminized Seeds — Which Should You Choose?

Autoflowering seeds are faster (8-10 weeks seed to harvest), stay smaller, and allow multiple harvests per year. Feminized photoperiod seeds produce larger plants, heavier individual harvests, and offer more control over plant size through vegetative growth timing. For beginners and limited spaces, autoflowers are ideal. For maximum single-harvest yield, feminized seeds win. Many experienced growers run both types simultaneously.

Tips for Growing Cannabis Seeds Successfully

Start with quality genetics — strain selection is the single biggest factor in your results. Germinate seeds using the paper towel method or direct soil planting. Maintain proper temperature (70-85°F), humidity (40-60% during flower), and pH (6.0-6.5 in soil). Use quality lighting — LED or HPS for indoor grows. Feed conservatively and increase gradually. Train your plants with LST or topping for bigger yields. Check our complete grow guide library for detailed instructions on every stage from seed to harvest.

Lab-Verified THC & Terpene Data

A cross-section of our 1,600+ strain catalog showing the full spectrum of modern cannabis genetics — from heavy-hitting Cookies-family hybrids through classic Dutch genetics through pure landrace lines. Lab-verified by third-party state-licensed testing facilities. The wide THC range (15-28 percent) and varied terpene profiles below illustrate why no two strains in our catalog perform identically.

StrainTotal THCCBD
Wedding Cake26.8%0.07%
Blue Dream23.4%0.10%
Northern Lights21.1%0.10%
Gelato26.2%0.08%
Sour Diesel24.7%0.05%
Granddaddy Purple22.0%0.09%
Hindu Kush (landrace)20.5%0.12%
ACDC (CBD)6.4%14.3%
Northern Lights Auto21.2%0.08%
Durban Poison (sativa)23.6%0.08%

Tests use HPLC analysis on dried, cured flower at 8-12 percent moisture content. Total THC reported as max-potential (THC + 0.877 × THCA). Sample chosen to represent each major sub-category in our catalog — see individual category pages for genre-specific lab data tables.

Real Grower Yield Reports

A representative slice of harvest reports from our customer base across all 50 US states over the past 14 months. The yield range below (145-1050 grams per plant) reflects the diversity of grow setups our customers use — from compact 2x2 autoflower tents to outdoor 25-gallon Critical Mass beasts in Northern California.

StrainYield (g/plant)
Wedding Cake875g
Blue Dream660g
Northern Lights360g
Gelato625g
Sour Diesel895g
Granddaddy Purple510g
Hindu Kush720g
ACDC380g
Northern Lights Auto145g
Durban Poison1050g

Frequently Asked Questions

Is it legal to buy cannabis seeds in the USA?
Cannabis seeds are sold as adult novelty souvenirs and for genetic preservation. Laws regarding germination vary by state. Buyers are responsible for understanding local regulations. Many states including California, Colorado, Oregon, Michigan, and others allow home cultivation for personal use.
How do I choose the right cannabis seeds?
Consider your growing environment (indoor vs outdoor), experience level, desired effects, and climate. Beginners should start with autoflowering or feminized seeds. Take our strain finder quiz for personalized recommendations based on your specific needs.
What is your germination rate?
Our seeds maintain a 95% germination rate when following our recommended germination guide. Seeds that fail to germinate are covered by our replacement guarantee at no additional cost.
How long does shipping take?
Orders ship within 1-2 business days. Most US deliveries arrive in 3-5 business days via USPS or UPS. All orders ship in plain, unmarked packaging for complete discretion. Free shipping on orders over $150.
What is the difference between autoflower and feminized seeds?
Autoflowers flower based on age (8-10 weeks total), stay compact, and are beginner-friendly. Feminized photoperiod seeds require a light cycle change to flower, grow larger, and produce heavier individual harvests. Both types produce only female plants.
Do you ship to all 50 states?
Yes. We ship cannabis seeds to all 50 US states using plain, unmarked packaging. Every order includes tracking information. Free shipping is available on orders over $150 USD.

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