High THC Marijuana Seeds

Looking for a seriously strong buzz? High THC seeds are all about next-level potency, with genetics bred to pack a punch and deliver that intense, euphoric high everyone talks about. These strains usually test at 20% THC or even higher, so if you’re after powerful effects—whether you want to chill hard, get creative, or just vibe with friends—these seeds are the way to go.

High THC seeds give you the kind of buds that hit fast and last, making them super popular for both recreational and medical growers. You’ll find everything from classic heavy-hitters to new dessert-flavored strains, all bred to grow sticky, resin-packed nugs that don’t mess around. If you’re ready to take your grow to the next level and want the strongest results possible, check out our lineup of high THC seeds and get growing.

Showing 1–48 of 66

Showing 1–48 of 66

Recently Added
27% THCa
indica dominant
intermediate
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Black Patronus

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Baja Blast

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Glookies

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California Octane

5
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Purple Gas

4.8
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Apple Blossom

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Pistachio

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Mango Sherbert

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Chicken N’ Wafflez

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Fortune Cookies

4.9
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Orange Creampop

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Granny Candy

5
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All Gas OG

4.9
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Poddy Mouth

4.8
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Royal Highness

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intermediate
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Purple Panty Dropper

5
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Garlic Butter

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Blueberry Pancakes

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indica dominant
intermediate
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Vanilla Frosting

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sativa dominant
easy
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Pineapple Upside Down Cake

4.9
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$45
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30% THCa
sativa dominant
easy
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Hella Jelly

4.9
4.9
(45)
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30% THCa
indica dominant
intermediate
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Pancakes

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Special Sauce

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Cherry Soda

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Trophy Wife

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Purple Sunset

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Melonade

4.7
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Blue Zushi

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Moroccan Peaches

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27% THCa
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Dante’s Inferno

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(7)
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37% THCa
indica dominant
intermediate
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Cadillac Rainbow

4.4
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(7)
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35% THCa
indica dominant
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Glitter Bomb

4.7
4.7
(9)
$28.32
25% THCa
indica dominant
easy
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Blue Lobster

4.8
4.8
(5)
$29.94
30% THCa
indica
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Permanent Marker

4.7
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(11)
$28.19
25% THCa
indica
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Sirius Black

4.6
4.6
(12)
$28.76
32% THCa
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intermediate
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The Toad

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27% THCa
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mixed hybrid
intermediate
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Gello Shotz

4.8
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(22)
$28.46
22% THCa
sativa dominant
intermediate
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Jack Herer

4.8
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(153)
$26.51
27% THCa
sativa dominant
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Timewreck

4.7
4.7
(25)
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17% THCa
sativa dominant
easy
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Bubble Gum Auto

4.8
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(142)
$28.94
20% THCa
sativa dominant
easy
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Haze XL Auto

4.8
4.8
(151)
$30.06
10% THCa
indica dominant
easy
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CBD Shark

4.8
4.8
(114)
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20% THCa
indica dominant
easy
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Skunk Kush

4.8
4.8
(134)
$30.14
21% THCa
indica dominant
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Candy Kush Auto

4.8
4.8
(153)
$30.69

Showing 1–48 of 66

What Makes a Cannabis Strain "High THC"?

So, what actually makes a strain “high THC”? It’s all about the percentage of THC—the stuff in weed that gets you high. Most regular strains have around 10-15% THC, but high THC strains usually start at 20% and can even go way higher. These strains are bred to have more of the THC chemical in their buds, which means stronger effects when you smoke or vape them. Basically, if you want weed that hits harder and gives you that intense, heady feeling, you’re looking for high THC seeds. It’s the difference between a chill buzz and a full-on, mind-blowing experience.

What Are The Most Popular High THC Strains?

If you’re hunting for the strongest weed out there, a few high THC strains always come up in conversation. These are the ones everyone’s talking about for their crazy potency and legendary highs:
  • Godfather OG: This one’s a total beast. People call it the “Don” of all OGs, and it’s hit THC levels up to 34%. It’s super popular for its heavy, relaxing effects that can leave you feeling totally chill.
  • Gorilla Glue #4 (GG4): GG4 is famous for its sticky buds and strong, couch-lock kind of high. THC usually lands between 25% and 32%, so you know you’re in for a wild ride.
  • Bruce Banner: Named after the Hulk for a reason, Bruce Banner packs a punch with THC levels in the upper 20s. It’s got a strong, uplifting high that can hit you fast.
  • Strawberry Banana: This one’s known for its sweet, fruity flavor and THC up to 26%. It’s a go-to for a happy, mellow vibe.
  • Girl Scout Cookies (GSC): GSC is a classic, with THC sometimes pushing past 28%. It’s super popular for that mix of euphoria and chill.
  • Do-Si-Dos: This strain is all about strong, relaxing effects and can hit THC levels up to 30%. It’s a favorite for winding down after a long day.
  • Zkittlez: If you want something that tastes awesome and hits hard, Zkittlez is a solid pick. THC usually falls between 20% and 25%, and it’s super easy to grow at home.
These strains are all about high THC seeds and are super popular with both new and experienced growers who want the most potent buds possible. If you’re after a strong high and some legendary genetics, you can’t go wrong with any of these.

Frequently Asked Questions

All our products are federally legal and have been since the 2018 Farm Bill. This piece of legislation legalized cannabis products containing less than 0.3% Delta-9 THC by dry weight. We regularly have all our products tested by third-party labs, to ensure our compliance with federal law.
All Growers Choice Seeds products are regularly tested by third-party labs to ensure safety and federal legality.
Our federally legal cannabis seeds are organic non-GMO, and will grow into plants that gives you the fun THC high and wellness benefits without the risk, danger and inconsistency of illegal marijuana. We’re so confident in our growers and producers, that we offer a money back satisfaction guarantee.
Growers Choice Seeds is committed to transparency and safety. All of our seeds are tested by third-party labs to ensure they meet federal legal and health standards.
Using marijuana will cause you to test positive for THC. We recommend not using them if you are required to pass a drug test for marijuana.