Blue Strains
Blue Strains are cannabis cultivars that finish with blue-to-violet flower tones in the Blueberry family. Royal King Seeds USA stocks 93 blue cannabis strains, including grower favorites like Blue Haze, Blue Ox, Blue Cookies, every one shipped discreetly to all 50 states with a 95% germination guarantee. Below you'll find the full lineup with THC, effects, and flowering time, plus what to look for when choosing blue genetics.
93 Blue Strains to Buy
IndicaAutoBlue Haze
20 THC · Auto
From $11.99
IndicaBlue Ox
25 THC · Photo
From $11.49
HybridAutoBlue Cookies
25 THC · Auto
From $14.49
IndicaBlue God
18 THC · Photo
From $14.99
HybridBlue Goo
20 THC · Photo
From $11.49
HybridBig Blue
22 THC · Photo
From $10.99
HybridBlue Lyly
18 THC · Photo
From $14.49
HybridAutoBlueberry Haze
15 THC · Auto
From $10.99
HybridBlue Kush
20 THC · Photo
From $9.99
IndicaBlueberry
16 THC · Photo
From $12.99
SativaBlue Kiss
24 THC · Photo
From $13.99
IndicaBlue Widow
16 THC · Photo
From $11.99
HybridBlue Power
21 THC · Photo
From $10.99
HybridLucid Blue
26 THC · Photo
From $13.49
SativaBlue Cinex
22 THC · Photo
From $15.99
IndicaBlue Blood
14 THC · Photo
From $13.99
IndicaBlue Frost
20 THC · Photo
From $12.99
IndicaBlue Crack
22 THC · Photo
From $14.49
HybridBlue Mango
18 THC · Photo
From $12.99
SativaAlpha Blue
20 THC · Photo
From $15.99
IndicaBlue Magoo
15 THC · Photo
From $15.99
IndicaBlue Alien
21 THC · Photo
From $11.99
SativaBlue Dream
17 THC · Photo
From $9.99
HybridBlue Zushi
28 THC · Photo
From $15.49
IndicaBlue Fruit
14 THC · Photo
From $10.99
HybridBlue Cheese
19 THC · Photo
From $14.49
IndicaDisney Blue
24 THC · Photo
From $12.99
HybridBlue Dragon
26 THC · Photo
From $14.99
HybridBlue Galaxy
22 THC · Photo
From $12.99
IndicaBlue Mystic
19 THC · Photo
From $13.49
IndicaBlue Zombie
18 THC · Photo
From $10.99
IndicaBlue Buddha
23 THC · Photo
From $14.49
IndicaBlue Diesel
22 THC · Photo
From $15.49
IndicaBlue Knight
27 THC · Photo
From $13.49
HybridAlpine Blue
17 THC · Photo
From $14.99
IndicaBlue Lights
18 THC · Photo
From $11.49
IndicaBlue Monster
22 THC · Photo
From $15.99
HybridBlueberry AK
15 THC · Photo
From $10.99
IndicaPacific Blue
25 THC · Photo
From $12.49
HybridSeattle Blue
27 THC · Photo
From $12.99
SativaBlue Amnesia
18 THC · Photo
From $12.99
HybridBlue Jay Way
8 THC · Photo
From $14.49
IndicaBlue Afghani
19 THC · Photo
From $13.49
SativaBlue Diamond
22 THC · Photo
From $12.99
HybridBlue Hawaiian
18 THC · Photo
From $15.99
IndicaBlue Zkittlez
20 THC · Photo
From $11.99
IndicaElectric Blue
18 THC · Photo
From $13.49
IndicaBlue Dynamite
20 THC · Photo
From $9.99
CBDCBD Blueberry
1.1 THC · Photo
From $15.49
SativaBlue Princess
18 THC · Photo
From $12.99
IndicaBlue Biscotti
22 THC · Photo
From $14.49
IndicaBlueberry Milk
26 THC · Photo
From $15.99
CBDCBD Blue Shark
0.8 THC · Photo
From $13.99
IndicaBlue Jack City
20 THC · Photo
From $12.99
IndicaWhitaker Blues
19 THC · Photo
From $13.49
IndicaBlueberry Kush
19 THC · Photo
From $9.99
IndicaBlueberry Waltz
20 THC · Photo
From $12.49
IndicaBlueberry Skunk
23 THC · Photo
From $13.99
IndicaBlue Persuasion
23 THC · Photo
From $12.49
CBDMataro Blue CBD
1.3 THC · Photo
From $13.49
What Makes a Blue Strain?
Blue flower color is largely genetic but partly environmental. Blue strains carry blue-to-violet flower tones in the Blueberry family, and that expression intensifies when night temperatures drop into the low 60s°F during the final two weeks of flower. Not every plant from a blue line will color up identically, phenotype variation is normal, but starting from genetics selected for the trait dramatically improves your odds. Bag appeal aside, color has little bearing on potency, so choose on effects and terpenes too.
Blue Strains FAQ
What are blue strains?+
Blue Strains are cannabis cultivars defined by blue-to-violet flower tones in the Blueberry family. Royal King Seeds currently lists 93 of them, spanning indica, sativa, and hybrid genetics in both feminized and autoflower formats.
What is the best blue strain?+
Popular blue picks include Blue Haze, Blue Ox, Blue Cookies. The "best" choice depends on your grow space, climate, and the effects you want, every strain page below lists THC, flowering time, and effects so you can compare directly.
Can I buy blue seeds in the USA?+
Yes. Royal King Seeds ships blue cannabis seeds to all 50 US states with discreet packaging, 3-5 day delivery, and a 95% germination guarantee.