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Strain Catalogue

Comprehensive Guide to Our Premium Clones

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Banana Mango

Huge plants with amazing vigor produce exceptional banana and mango terps

  • Type: Sativa Dominant
  • Flowering Time: 8 weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Great for Outdoor, Top Yielder

Biscotti

  • Type: Indica Dominant
  • Yield: Moderate
  • Difficulty: Intermediate

Black Jack

Black Jack is a heavy yielding sativa-dominant hybrid, that produces large dense flowers with big calyxes covered in crystals. Good for both indoor and outdoor grows alike.

  • Type: Sativa Dominant
  • Flowering Time: 9-10 weeks
  • Yield: Heavy
  • Difficulty: Intermediate
  • Categories: Top Yielder

Blue Dream

A cross between DJ Short’s Blueberry (indica) and Santa Cruz Haze (sativa), Blue Dream quickly rose to become a staple in the West Coast grower and dispensary communities. With 50-100% stronger yields than most other strains, Blue Dream produces huge dense buds packed heavily with trichomes, and covered with a fine coat of light orange hairs.

  • Type: Sativa Dominant
  • Flowering Time: 8-10 weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Great for Outdoor, Top Yielder

Chili Verde

Unforgettable spicy aromas and pops of color!

  • Type: Sativa Dominant
  • Flowering Time: 9 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate

Do-Sa-Do

Ridiculously resinous and beautifully colored, dense buds.

  • Type: 50/50 Hybrid
  • Flowering Time: 8-9 weeks
  • Yield: Moderate
  • Difficulty: Intermediate

Dream Queen

Top choice for smell – extremely pungent with a fruity, sweet candy fragrance.

  • Type: Sativa Dominant
  • Flowering Time: 7-8 weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Great for Outdoor, Top Yielder

Feminized Seedlings

Plant feminized seedlings for explosive growth and big yields!

Fire OG

Frost covered lime greenish buds packed heavy with red hairs giving the appearance of being on fire.

  • Type: 50/50 Hybrid
  • Flowering Time: 9-10 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate
  • Categories: OG’s, Top Yielder

Freakshow

This freaky strain looks like a fern but provides a wonderful, uplifting sativa effect!

  • Type: Sativa Dominant
  • Flowering Time: 9 weeks
  • Difficulty: Intermediate
  • Categories: Great for Outdoor

GMO Cookies

Chemdawg meets GSC to create a one-of-a-kind powerhouse yielder with funky garlic terps.

  • Type: Indica Dominant
  • Flowering Time: 11-12 Weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Headstash, Top Yielder

First place winner of the High Times SoCal Cannabis Cup 2014

  • Type: Sativa Dominant
  • Flowering Time: 9 weeks
  • Yield: Moderate

Ice Cream Cake

  • Type: Indica Dominant
  • Flowering Time: 8 weeks
  • Yield: Moderate
  • Difficulty: Intermediate

Knights Templar OG

A potent OG for indica lovers!

  • Type: Indica Dominant
  • Flowering Time: 9 weeks
  • Yield: Heavy
  • Difficulty: Intermediate
  • Categories: OG’s

Lemongrass

Vigorous standout grows huge outside and carries an intense lemon flavor

  • Type: Indica Dominant
  • Flowering Time: 8 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate
  • Categories: Great for Outdoor
  • Type: Indica Dominant
  • Flowering Time: 9 weeks
  • Yield: Moderate
  • Difficulty: Intermediate
  • Categories: Headstash

Magic Melon

This lime green, frosty, big budded strain with hints of purples, orange hairs is a Humboldt Seed Company 10k Phenotype MegaHunt strain selection!

  • Type: Sativa Dominant
  • Flowering Time: 7-8 weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Great for Outdoor, Top Yielder

NaPali Pink

With this cannabis strain you’ll have a truly unique Hawaiian experience delivering all the color and flavor people have come to associate with island life.

  • Type: Sativa Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Moderate
  • Difficulty: Intermediate

Pineapple Upside Down Cake

This strain, with its frosty lime green and golden calix tips, really takes the cake when it comes to new and exciting strains. She’s a 60% Sativa and 40% Indica strain that yields heavy with an extremely unique terpene profile that is great for concentrates!

  • Type: Sativa Dominant
  • Flowering Time: 7-8 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Easy
  • Categories: Headstash

Purple Punch

This frosty lady is a must have for your garden! She does well in both indoor and outdoor environments, her scent is extremely pungent and she’s exhibited a resilience to mites.

  • Type: Indica Dominant
  • Flowering Time: 7-8 weeks
  • Yield: Heavy, Moderate
  • Categories: OG’s, Purple

Remedy CBD

This high in CBD and low in THC strain is a moderate yielder with little to no psychoactive effects.

  • Type: Indica Dominant
  • Flowering Time: 8-10 weeks
  • Yield: Moderate
  • Difficulty: Intermediate
  • Categories: CBD

Romulan

Legendary strain that delights cannabis veterans and newcomers alike

  • Type: 50/50 Hybrid
  • Flowering Time: 8-9 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate

SFV OG

One of the most prized OG Kush varieties today.

  • Type: 50/50 Hybrid
  • Flowering Time: 9-10 weeks
  • Yield: Moderate
  • Difficulty: Intermediate
  • Categories: Great for Outdoor, OG’s

Sour Diesel

These plants are possibly some of the most stank and skunk smelling plants indoors.

  • Type: Sativa Dominant
  • Flowering Time: 10-12 Weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Great for Outdoor, Top Yielder

Strawberry Banana

Grows to a medium height bush, producing a heavy yield of dense buds.

  • Type: Indica Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate
  • Categories: Short in Height

Strawberry Cheesecake

This decadent cannabis strain produces dense, GSC like buds averaging a THC potency in the HIGH 20’s!

  • Type: Indica Dominant
  • Flowering Time: 7-8 weeks
  • Yield: Moderate
  • Difficulty: Easy, Intermediate
  • Categories: Headstash

Sweeties

  • Type: Indica Dominant
  • Flowering Time: 9 weeks
  • Yield: Moderate

Tahquitz OG

Rock-solid stable F1 hybrid clone-only is easy to grow and has an amazing effect.

  • Type: Indica Dominant
  • Flowering Time: 9-10 weeks

The Bling

The Bling is a productive and fast growing, that boasts both insane trichomes and a heavy dose of THC!

  • Type: Indica Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Heavy
  • Difficulty: Easy, Intermediate
  • Categories: Great for Outdoor, Headstash, Top Yielder

Tropicana Cookies

  • Type: Sativa Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Moderate
  • Difficulty: Intermediate

Vanilla Frosting

She’s a high-yielding, extremely potent, new & improved version of the consumer favorite strain, Gelato, hand-selected as Humboldt Seed Company’s 10K Phenotype Mega Hunt favorite!

  • Type: Indica Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Heavy
  • Difficulty: Easy, Intermediate
  • Categories: Top Yielder

Venom OG (All Gas OG)

A cross between Venom OG and Humboldt OG, Venom OG (now renamed Asphalt Plant) is a 50/50 Hybrid strain. The flowers are dense and bright green with protruding bright orange hairs that show purple colors towards the final weeks of flowering. With a piney, lemon aroma reminiscent of diesel and skunk, Venom OG will have you calm and relaxed.

  • Type: 50/50 Hybrid
  • Flowering Time: 8 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Easy
  • Categories: OG’s

Wedding Cake

A must-have for 2020, this clone-only strain smells like vanilla cake and has exceptional bag appeal.

  • Flowering Time: 8-9 weeks
  • Yield: Heavy
  • Difficulty: Intermediate

3xCrazy

3X Crazy is an indica-dominant three-way cross between OG Kush, Bubba Kush, and Granddaddy Purple. Its aroma is comprised of sweet grape, spicy pepper, and earthy notes passed on by its Bubba Kush parent.

  • Type: Indica Dominant
  • Flowering Time: 7-9 weeks
  • Yield: Moderate
  • Difficulty: Intermediate
  • Categories: Purple, Short in Height

4G is a cross between Gelato #45 x Gorilla Glue #4 x Girl Scout Cookies. The Cola’s have a tight bud structure that stack well giving growers the quality high yield they are looking for.

  • Type: Indica Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate
  • Categories: Great for Outdoor

Alien OG

A cross between Tahoe OG and Alien Kush, the buds on this plant grow tight & slightly elongated. Its branches tend to keep stretching in the first few weeks of flowering.

  • Type: 50/50 Hybrid
  • Flowering Time: 8-9 weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Great for Outdoor, OG’s, Top Yielder

Allen Wrench

Perfect for sativa-lovers, Allen Wrench embodies the best traits from its Trainwreck and NYC Diesel lineage. With delicious flavors of sour-citrus fruits, its aromatic scent compliments its flavor profile.

  • Type: Sativa Dominant
  • Flowering Time: 10-11 weeks
  • Yield: Heavy
  • Difficulty: Difficult, Intermediate

Blackberry Fire

Bred by Purple Caper Seeds, Blackberry Fire is a cross between Blackberry Kush and Fire Lady. Lauded for its fuel like flavor, Blackberry Fire was awarded 2nd place in the HempCon Cup Awards in 2016. With a gas like terpene profile and hints of berry, the flavor has a sour, mineral like, fruity sweetness.

  • Type: Indica Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate

Blackberry Kush

Prized by the medical cannabis community, Blackberry Kush is primarily indica and is a mix of Afghani and Blackberry strains with deep purple flowers and bright orange hairs. Producing moderate yields with hard, dense buds that are heavily crystallized, Blackberry Kush has a strong jet-fuel scent and flavor tapered by delicious sweet berries.

  • Type: Indica Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Moderate
  • Difficulty: Intermediate
  • Categories: Purple, Short in Height

Blueberry Muffin

2017 Emerald Cup winner by Humboldt Seed Company

  • Type: Indica Dominant
  • Flowering Time: 7-8 weeks
  • Yield: Moderate
  • Difficulty: Intermediate

Boss OG

Crafted in-house at Dark Heart Nursery, Boss OG is an OG Kush phenotype sharing similarities with Fire OG. With its classic OG scent of fuel and citrus, Boss OG produces heavy yields making it an ideal strain for commercial growers and discerning patients alike.

  • Type: 50/50 Hybrid
  • Flowering Time: 9-10 weeks
  • Yield: Heavy
  • Difficulty: Difficult, Intermediate
  • Categories: OG’s

Chemdawg 4

Originating from the Chemdawg lineage, Chemdawg 4 is different in that it is indica-dominant. With a lemon-citrus flavor reminiscent of Pine-Sol, Chemdawg 4 produces large cola’s with tight, plump structure and heavy crystallization with light sprinkling of orange hairs.

  • Type: 50/50 Hybrid, Indica Dominant
  • Flowering Time: 9-10 weeks
  • Yield: Heavy
  • Difficulty: Easy
  • Categories: Top Yielder

Chernobyl

Rated one of the top 10 strains of 2010 by High Times Magazine.

  • Type: Sativa Dominant
  • Flowering Time: 8-9 weeks
  • Yield: Moderate
  • Difficulty: Difficult
  • Categories: Headstash

Cherry Pie

Not quite the same Cherry Pie your grandma used to make – although just as delicious.

  • Type: Indica Dominant
  • Flowering Time: 9-10 weeks
  • Yield: Moderate
  • Difficulty: Difficult
  • Categories: Headstash, Short in Height

Chocolate Grape Diesel

Direct from Purple Caper Seeds, Chocolate Grape Diesel comes from a clone-only Grape Diesel mother. The father plant is a Chocolate Kush and the same father that made the famous Chocolate Hashberry. The buds are an auto purple getting dark purple tinges in the flower without having to lower the temperatures. It is a very very dark bud once it ripens and has a deep rich plum color with a grape smell and sweet flavor.

  • Type: Indica Dominant
  • Flowering Time: 8-10 weeks
  • Yield: Moderate
  • Difficulty: Intermediate

Chocolate Hashberry

A uniquely flavored bud with hints of semi-sweet chocolate and spice.

  • Type: 50/50 Hybrid
  • Flowering Time: 7-9 weeks
  • Yield: Heavy, Moderate
  • Difficulty: Intermediate
  • Categories: Great for Outdoor, Short in Height

Chocolate Tonic CBD

This high yielding, 2:1 CBD cannabis strain, that won Best CBD Flower, is sure to produce well for you no matter what garden environment you place her in!

Learn all about our extensive lineup of premium-quality genetics.

Nitrogen Toxicity

Problem: Dark green leaves, shiny leaves, clawing, weak stems, and overall slow growth. Marijuana leaves that are nitrogen toxic often get “The Claw” or talon-like leaves that are bent at the ends. They also do an odd curving (or cupping) that is often mistaken for overwatering, but is unique to nitrogen toxicity. You can see a “clawing” leaf in the pictures below (click each picture for a close-up).

Leaves that turn into claws often start turning yellow and dying if the nitrogen toxicity is not treated, much like a nitrogen deficiency, only the leaves will continue to get more and more clawed. Leaves eventually turn yellow or brown and fall off. You can tell if yellowing is caused by too much nitrogen because the rest of the plant will be dark green, and the yellowing leaves will turn into claws first.

The majority of times that growers encounter problems with nitrogen, it’s from giving too much of it to their plants.

Many new growers accidentally give their plants give too much Nitrogen, especially in the flowering stage. This results in dark, shiny, clawing leaves.

Your plant needs a lot of nitrogen in the vegetative stage, and it’s generally hard to give too much as long as you’re not going completely overboard with nutrients. Nitrogen is a big part of what makes leaves green, and is incredibly important to the process of photosynthesis (making energy from light).

But cannabis plants need relatively low levels of Nitrogen in the second half of the flowering/budding stage. While your plants still need N (nitrogen) during flowering, too much N at this stage will prevent your plants from forming buds properly, resulting in lower yields, less potency and possibly inferior buds.

This is why it’s important to avoid any type of “time-release” nutrients or soil (for example, standard Miracle-Gro soil) as they will keep giving your plant a lot of N even after its started flowering.

When it comes to nitrogen, this is what your plant needs:

Vegetative Stage – higher levels of Nitrogen (pretty much any plant food will do)

Most complete plant foods that you get at a gardening store contain high levels of nitrogen (N). These nutrient systems tend to work well in the vegetative stage.

Some examples of cannabis-friendly one-part Vegetative nutrient systems…

Pretty much any complete plant food

Flowering Stage – lower levels of Nitrogen (use “Bloom” or Cactus nutrients)

It’s extra important to find a nutrient system with lower levels of nitrogen for the last part of your plant’s life. Many “Bloom” or “Flowering” style base nutrients are just the ticket.

Some examples of good one-part Flowering nutrient systems…

If you can’t order online and can’t find a good one-part base Bloom formula locally, you do have other choices. Though not an ideal choice, most Cactus plant foods will contain good nutrient ratios for growing cannabis during the budding stage. So in a pinch, you can use the cactus nutrients that can be found at most gardening stores.

Different strains react differently to nitrogen toxicity. Some plants get dark green leaves with no clawing. Some strains will get leaves that do the weird 90 degree bend at the tips, while other strains or individual plants start curling like claws and then turn yellow / brown and fall off like a deficiency. Yet these are all signs of too much nitrogen.

Signs of Nitrogen Toxicity

  • Dark green leaves and foliage
  • Leaf tips may turn down, without signs of overwatering.
  • You may notice yellowing on the affected leaves or other signs of nutrient deficiencies as time goes on
  • Nitrogen toxicity is often but not always accompanied by nutrient burn
  • The Claw often seems random, affecting leaves here and there
  • Heat and pH problems will make the clawing worse, as they stress out the plant and lower her defenses, and cause her to drink more water (and uptake more N)
  • As time goes on, the claw leaves will eventually start turning yellow, getting spots, and dying

This cannabis seedling is dark because it was underwatered in a “hot” soil mix (too much Nitrogen), but after watering the plant as normal for a week or two, the plant started growing vigorously

Solution: Reduce the Nitrogen your plant is getting!

Reduce the amount of nitrogen that is being fed to the plants. If you are feeding extra nutrients, cut down that amount. If you are in the flowering / budding stage, make sure you’re using a formula that’s specifically meant for flowering, or else it could have too much nitrogen.

If you are not feeding extra nutrients, you may have “hot” soil that has been giving your plants extra nutrients. In that case, flush your plants with filtered, pH’ed water to help clear out the extra nitrogen.

Effected leaves likely won’t recover, but you should see the problem halt with no new leaves being affected.

Wait! I’m not sure if it’s Nitrogen toxicity!

Ok, you ruled out overwatering, now what?

When I first got started growing, everyone kept telling me that this particular kind of leaf clawing was caused by under or overwatering my plants, pH problems, or heat problems.

Yet in my case, I knew that it wasn’t over or under watering (I was growing in hydro, where roots grow directly in water and air stones are constantly adding oxygen). I knew it wasn’t pH (my reservoir water had the right pH) and I knew it wasn’t heat since the grow area was slightly cooler than room temperature.

So then what was really causing my claw leaves?

It’s understandable that other growers were mistaken. It is true that many stresses will make any other problem worse.

Plus overwatering can cause a similar kind of leaf clawing (learn more below). And if you do have nitrogen toxicity, than heat or pH problems will make the problem much worse.

Now, you may or may not know that marijuana (or any plant) needs an element known as “Nitrogen” to grow.

In fact, nitrogen is one of the 3 nutrients that are included in almost every kind of plant food.

When looking at plant nutrients, you’ll almost always see 3 numbers listed, like 3-12-6 or 5-10-5. These numbers represent the ratio of Nitrogen (N), Phosphorous (P) and Potassium (K) contained in the bottle. Just about all plant life on Earth needs these 3 elements to grow.

The very first number, “3” in the case of the picture to the right, always displays the proportion of nitrogen in this nutrient bottle compared to the other 2 nutrients (Phosphorus and Potassium respectively).

The reason nitrogen is in all plant nutrient formulations is because it’s vital to plant processes.

For marijuana plants, when they don’t get enough nitrogen, the bottom leaves start turning yellow and dying. Left unchecked, a nitrogen deficiency can cause the whole plant to eventually die.

However, this time we’re the dealing with the opposite problem: nitrogen toxicity, or too much nitrogen.

Why You Should Treat And Prevent Nitrogen Toxicity

  • Marijuana plants that get too much Nitrogen in the vegetative stage don’t grow as vigorously.
  • Too much nitrogen is especially harmful in the flowering stage, because this will cause your plant to produce much smaller buds.
  • If you react quickly and reduce your nitrogen levels at the first sign of toxicity, your plant will quickly recover.

Note: Some strains with the word “Claw” in the name tend to do The Claw more easily than others.

Problems with excess nitrogen are not common in the wild; it’s a lot more common to see nitrogen toxicity on indoor plants, especially when overzealous growers go overboard with nutrients.

Occasionally you’ll come across a strain or particular plant that likes lower levels of nutrients, and when this happens, it’s important to realize the plant is showing signs of toxicity, even if all the other plants in your garden seem fine.

One of the most common signs off too-many-nutrients is “nutrient burn,” or when the tips of your leaf appear brown or burned. Yet there are specific signals your plant will display when she’s getting too much nitrogen…

Recap: How You Know You Have a Nitrogen Toxicity

  • Dark green leaves and foliage
  • Leaf tips turn down, without signs of overwatering.
  • You may notice yellowing on the affected leaves or other signs of nutrient deficiencies as time goes on
  • Nitrogen toxicity is often but not always accompanied by nutrient burn
  • The Claw often seems random, affecting leaves here and there
  • Heat and pH problems will make the clawing worse, as they stress out the plant and lower her defenses, and cause her to drink more water (and uptake more N)
  • As time goes on, the claw leaves will eventually start turning yellow, getting spots, and dying

Light and “The Claw”

  • The distance between the leaves to the lights or irregular light patterns from reflectors often seem to affect the condition, which is why many growers believe that light is somehow causing the problem.
  • You may notice this clawing first appears on dark green leaves that aren’t getting enough light (they aren’t able to use up all their nitrogen and become nitrogen toxic).

The Claw in the Flowering Stage

  • If you use vegetative plant nutrients during the flowering stage, then they’ll deliver too much nitrogen. This is why you need to get special nutrients meant for the blooming / flowering stage. You’ll notice that flowering nutrients always contain a smaller percentage of nitrogen (the first number) compared to nutrients for the vegetative stage. Learn more about marijuana nutrients here.
  • Many growers mistakenly keep raising nutrient levels or adding additional nitrogen when they see yellow leaves in the flowering stage, not realizing that it’s natural for plant leaves to start yellowing as harvest approaches. Adding too much nitrogen in the flowering stage can cause nitrogen toxicity even when you can see yellow lower leaves. Nitrogen toxicity in flowering results in smaller yields and airy cannabis buds, so make sure to watch out!

Note: During the last few weeks before harvest, marijuana plants starts pulling all the remaining nitrogen from her leaves as part of the bud-making process. This causes yellowing leaves starting towards the bottom of the plant. This is part of the natural flowering process and you don’t need to fight it. You may notice that marijuana leaves are yellowing in almost all pictures of marijuana plants with big buds that are close to harvest. You tend to get smaller yields at harvest from nitrogen-toxic plants with dark green leaves.

It’s Normal For Marijuana Leaves To Start Turning Yellow As Harvest Time Approaches, Don’t Keep Adding More Nitrogen!

I know a lot of marijuana plant problems can look similar, but now that you’re armed with the right information, you’ll know exactly what to do if you see Nitrogen Toxicity affecting your marijuana plants.

Plant Symptoms

  • Bronze or brown patches
  • Brown or slimy roots
  • Brown or yellow leaf tips/edges
  • Buds dying
  • Buds look odd
  • Bugs are visible
  • Curling or clawing leaves
  • Dark leaves
  • Drooping plant
  • Holes in leaves
  • Mold or powder
  • Pink or purple on leaves
  • Red stems
  • Shiny or smooth leaves
  • Spots or markings
  • Twisted growth
  • Webbing
  • Wilting leaves
  • Yellow between leaf veins
  • Yellow leaves

This page is part of our Plant Doctor series. You can use our tool to filter by symptom and help diagnose your plant.

Does your plant have "the claw?" The talon-like leaves that are bent at the ends are a sign that your plant may have nitrogen toxicity. Learn how to fix it.