Skywalker Haze x Auto Amsterdam Amnesia
High THC Seeds
For some growers, High THC seeds are the only ones worth growing! High THC cannabis seeds can be either feminised seeds or autoflowering seeds. High THC seeds use the best, most consistent cannabis genetics to produce the most potent cannabis buds available. We regularly submit our high THC strains to independent labs to check THC levels in the buds. The highest THC results require optimised grow room conditions. Note that your own results will depend on a range of factors including plant phenotype, grower experience and nutrient/lighting/environmental conditions. If you want the strongest possible cannabis try growing some of our High THC seeds.
(Cinderella 99 X Jack Herer) X Magnum
Las Vegas Lemon Skunk Autoflower
THC Bomb X (Critical Orange Punch x Bubba Island Kush)
WiFi OG X Glueberry OG
Orange Bud X Auto Daiquiri Lime
Wedding Cake X Animal Cookies
Gelato X Sherbet
Mokum's Tulip x Auto Colorado Cookies
Kerosene Krash x (Kerosene Krash x Auto Glueberry O.G.)
Mad Scientist X Voodoo
Gorilla Glue #4 X Sherbet
pre ‘98 Bubba Kush X (Grandaddy Purple x OG Kush)
Orange Bud X Californian Orange
Skunk#1 X Afghani
What are High-THC cannabis seeds?
Most cannabis growers want to buy THC rich seeds in order to produce the most potent crop possible. THC rich seeds are defined as those that can produce around (or above) 20% THC in the dried cannabis buds.
The strongest THC seeds produce buds with a long lasting and extremely powerful psychoactive high. They are perfect for the grower that places the highest value on the quality and strength of their harvests.
The most reliable, highest THC seeds are the result of very careful breeding using the finest cannabis genetics. Because the seeds are feminised, you should get over 95% female plants from high THC seeds whether they are autoflower or photoperiod genetics. With high THC regular seeds, you will get roughly equal numbers of male and female offspring.
Buy High-THC cannabis seeds online
If you’re looking to buy high THC cannabis seeds then you should take a close look at the Dutch Passion seed collection. Dutch Passion was the first cannabis seed company to create feminised seeds back in the 1990’s. Today, Dutch Passion’s high THC seeds are better than ever. You can expect an easy grow experience across a wide range of grow methods. All the high THC seeds are specially bred and selected for ease of growth.
You can also expect heavy yields from these high performance modern genetics. Since the invention of feminised seeds, Dutch Passion have continued to improve performance and results. Dutch Passion’s mission is to provide the best performing cannabis seeds to professional growers and home growers.
This is done by sourcing the finest cannabis genetics from the unrivalled Dutch Passion network of breeders and genetic specialists around the world. When you buy your next high THC seeds buy them from Dutch Passion, the original creators feminised cannabis seeds. As well as buying the best cannabis genetics you can count on great support from the highly experienced team in the unlikely event of any issues. You can also choose next day delivery whether you are buying feminised seeds, autoflower seeds or regular seeds.
Highest THC feminised seeds recommendations
Below we list our highest THC seed recommendations. All these high THC cannabis seeds are easy to grow and deliver heavy harvests. You will find the highest THC seeds of feminised, autoflower and regular strains. You can expect consistent, reliable results. Many of these high THC seeds for sale have been in the Dutch Passion collection for several years with thousands of repeat growers.
Sugar Bomb Punch
High THC feminised seeds don't get much more powerful than Sugar Bomb Punch. Lab results have shown THC levels of over 23%. These indica dominant genetics use the best USA special genetics to deliver that perfect combination of XL yields with very high THC levels.
C-Vibez is a hybrid cannabis strain combining indica and sativa genetics in a beautifully balanced package. These are seriously high THC cannabis seeds, THC levels of over 23% have been recorded. Bloom time is around 10-12 weeks. Expect some of the stickiest and most potent buds you have ever grown!
With elite genetics from Wedding Cake x Animal Cookies, Meringue is a hybrid strain with extremely high THC levels. THC levels of over 20% have been recorded making this a high THC cannabis seed for the uncompromising grower seeking unique hybrid USA genetics with an amazing sweet aroma and fantastically resinous white buds.
HiFi 4G is a hybrid cannabis strain combining indica and sativa genetics in a beautifully balanced package. These are seriously high THC cannabis seeds with long lasting, highly pleasurable effects. Bloom time is a rapid 8 weeks or so, making this both a quick strain to grow as well as one with extremely high THC levels of 20-25%. Expect some of the stickiest and most potent buds you have ever grown!
Highest THC autoflower seeds recommendations
Autoflower seeds are perhaps the easiest and quickest way to grow cannabis. These high THC autoflower seeds grow from seed to harvest indoors under 20 hours of daily light in around 11 weeks. They can also grow well outdoors taking around 100 days from seed to harvest.
Auto Cinderella Jack
Auto Cinderella Jack is perhaps the worlds strongest autoflower strain. These high THC autoflower seeds have produced buds with over 25% THC. This is a hybrid strain, with indica and sativa genetics. She is very easy to grow in any grow medium/system. If you are looking for the most potent high THC auto seeds they don't come any stronger than this!
Auto Orange Bud
With a delicious sweet citrus taste and particularly heavy yields, Auto Orange Bud is a High THC autoflower seed with a difference. THC levels are around 20% and this auto is very easy to grow. First time growers have achieved superb results. Genetics come from the multiple prize winning original Orange Bud. Perfect for those that love buds with superb visual and aromatic bag appeal!
Auto Lemon Kix
Auto Lemon Kix uses USA special genetics to deliver a delicious combination of heavy yields with sky-high THC levels of around (and perhaps above) 20%. The candy taste is quite unique, sweet and fruity. The aroma is like dipping your nose into a jar of fruity candy sweets. This strain is perfect for those that enjoy high THC strains with a a genuinely wonderful caste and aroma.
Highest THC regular seeds recommendations
High THC regular seeds produce roughly equal numbers of male and female offspring. These are often preferred by old school growers and breeders who don't mind the presence of male plants.
Looking for high THC landrace cannabis seeds? With THC levels around 20% you can be assured of a premium strength vape/smoke from Mazar. These original cannabis cup winning Afghani genetics have been in the Dutch Passion collection for many years and deliver a powerful high and a strong body effects, making them a popular choice with medical marijuana growers. Mazar high THC seeds also deliver heavy harvests and an extremely penetrating aroma.
Euforia is a top quality sativa dominant skunk with a joyful, stress-busting anti anxiety high. Skunk seeds have a reputation for being particularly easy to grow and Euforia is no exception. These high THC seeds produce buds that have a thick crust of resin and a powerful skunky aroma. Perfect for the grower seeking to combine ease of growth with a unique ‘up’ high.
Looking for high yield outdoor THC cannabis regular seeds? Passion #1 is a Californian Indica with high THC levels and is bred for outdoor cultivation, often ready to harvest around early October. She can reach 3-4m tall and yield very heavily in good conditions.
Do cannabis seeds contain THC?
Is there THC in seeds? Cannabis seeds don’t contain THC. That’s one of the reasons they are legal in so many countries. However, they do contain all the necessary genetics to grow a plant which will produce lots of THC rich buds.
Key factors that influence THC-levels in cannabis plants
Starting with proven, high THC cannabis seeds is the best foundation to grow a crop of potent buds. But high THC seeds are only part of the story. The grower also needs to understand the finer points of cannabis cultivation in order to provide fully optimised conditions. This knowledge can be learned through experience or through online education. There are several aspects of cannabis growing which all need to be combined in order for the high THC cannabis seeds to reach their full potential. The main factors that influence THC levels in cannabis plants are listed below.
Grow room environment
A stable optimised grow room environment is key for an optimised plant growth. Temperatures should be stable. Extreme high/low temperature variations stress the plant and slow down development. Humidity needs to be controlled. This is particularly important towards the end of the grow when low humidity levels need to be maintained to prevent bud rot.
Indoor cannabis plants need lighting that delivers the right wavelengths at optimised intensities. LED lighting is generally regarded as the highest quality lighting option. HPS is the cheapest grow light option but the spectrum isn’t as optimised for cannabis plants as LED.
UVB supplemental light
UVB light is naturally present in sunlight but not usually in indoor grow lights. Supplementing an indoor grow light with UVB can add an extra few percentage points of THC to the buds. Without UVB a strain may produce THC levels of around 20%. With UVB fluorescent light added to the grow room, THC levels of up to 25% may be possible. Most professional legal growers use UVB to maximise THC levels.
One of the most difficult topics for beginners to master is nutrient management and control. One of the most common errors, especially from less experienced growers, is the tendency to over water and over feed their plants. In the worst cases this can permanently stunt plant growth and prevent plants from achieving the THC potential.
Pests and disease control
Keeping a clean, pest/disease grow room is key when trying to produce the highest THC levels in your crop. Pests and disease stress your cannabis plant, reducing growth and final harvest quality.
Cannabis seeds quality
Even the world's best cannabis growers won't get high THC results from low THC seeds. Choose the best quality high THC seeds you can get from a supplier with a long standing reputation for quality and you have the best starting point for your grow.