Top 10 Mold Resistant Cannabis Strains

mold resistant cannabis strains

Mold: a fungus that thrives in damp conditions with poor airflow that can devastate an otherwise healthy marijuana plant. It can be one of the most terrifying things that an indoor cannabis grower can encounter. If not handled immediately, the whole harvest can be wasted. It may seem impossible to grow weed in stuffy grow rooms, but we’ve got you covered with our latest addition to the Indoor Cannabis Seeds collection. There are plenty of mold-resistant weed plants out there, and we’ve got the lowdown on the best ten strains on the market.

Why Mold-Resistant Strains?

If you live in a part of the world that has rainy summers and falls, growing cannabis can be a challenge. The same issue arises within poorly-ventilated grow areas. In either case, the last thing you want is for your buds to get mushy, moldy, and rotted. However, it doesn’t have to be impossible to grow good bud in wet, rainy climates or a stuffy attic space. In fact, there are some mold-resistant cannabis strains out there that can actually thrive in wet weather. That’s right, some strains of weed are naturally resistant to issues caused by moisture. Continue reading to find out what these marijuana strains are.

Here's What You Need to Look for In Mold-Resistant Cannabis

What makes for a mold-resistant cannabis strain? Well, it’s all in the genetics. Many mold-resistant strains come from the humid and rainy regions of Asia and Central America. These strains (usually Sativas), otherwise known as “landraces,” have, through generations, adapted to local climates with less than ideal growing conditions. Landraces have become so naturalized to their original environments that the plants are naturally less susceptible to mold and can thrive in wet conditions. Crossing these strains with others has led to hybrids with mold resistance and hardiness on another level! Many of them have spongier buds and wider internodal spacing that allows for better airflow, and therefore better mold-resistance.

Best Mold-Resistant Strains 2022

One of the key characteristics to mold-resistant strains is high resin production, since that’s how the plant protects itself from the elements. Luckily for us, the resin is where all the good stuff is! Not only is this list full of strains that are hardy and resilient, but most of them are pretty darn potent, too.

Mold-Free with LSD

LSD (Barney's Farm) LSD (Barney's Farm)
  • Photoperiod
  • Focused and relaxed Creator
  • 25 %
  • 700 g/m² indoors
    600 - 750 g/plant outdoors
Go to strain

LSD is a behemoth of a strain. With lemon and earth-flavored buds packed full of THC up to 25%, this strain is not for the faint of heart! To get the most out of LSD – one of the best outdoor mold-resistant strains – you’ll need to practice some topping to maximize your harvest. She thrives best outdoors, where she can grow big and tall and won’t be threatened by mold, since its great mold-resistance guarantees rewards even in colder climates.

Candy Kush Auto, a Strain that Basically Grows Itself

Candy Kush Auto (Auto Seeds) Candy Kush Auto (Auto Seeds)
  • Autoflowering
  • 19 - 22 %
  • Delightfuly sweet dreaming
  • 300 - 400 g/m² indoors
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There are mold-resistant autoflower strains out there as well: Candy Kush Auto by Auto Seeds, for example. This Indica-dominant hybrid has plenty of terpenes that help the strain fend off disease, and which also give Candy Kush her spicy caramel flavor. She has characteristics that are attractive to every grower: super resistant to pests and weather, and a discreet height of 100cm (3’2”) indoors. How easy Candy Kush is to grow isn’t the only thing that’s sweet – she also clocks in at 22% THC and 2% CBD!

Get Excellent Results with Northern Lights Auto

Original Auto Northern Lights (FastBuds) Original Auto Northern Lights (FastBuds)
  • Autoflowering
  • Heavy fingers
  • 20 %
  • 500 - 600 g/m² indoors
    60 - 160 g/plant outdoors
Go to strain

FastBuds’ Northern Lights Auto, otherwise known as Original Auto Northern Lights, is a legendary hybrid with hard-hitting Indica effects and a natural resistance to colder climates. Growers will be pleased to know that Northern Lights Auto’s genetics make this plant naturally mold-resistant , which it’s been proving to growers for decades. Her resinous buds will protect your crop from disease and leave you pleased later with the potency, fruity flavor, and a narcotic-like knock-out effect. Original Auto Northern Lights plants are stocky and compact, which makes.them ideal for indoor growers.

The Power and Beauty of The Church

The Church (GHS) The Church (GHS)
  • Photoperiod
  • A portion of vivacity and relaxation
  • 20.28 %
  • 800 g/m² indoors
    900 g/plant outdoors
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Another entry in our list of the best mold-resistant cannabis strains is The Church, also a strain related to Northern Lights. It has origins in the European region, which means that she can handle a wide variety of non-optimal growing conditions. Resistant to mold, mildew, and pests, The Church is incredibly easy to manage. All that sticky resin will keep your plant safe from mold – plus, you’ll see a yield of about 700g (1.5lb) per square meter indoors. We also can’t help but mention how beautiful the buds are: light green and full of trichomes, and adorned with orange and purple hairs.

The Sweet Escape with Kandy Kush

Kandy Kush (Reserva Privada) Kandy Kush (Reserva Privada)
  • Photoperiod
  • Destination: couch
  • 18.5 %
  • 450 - 550 g/m² indoors
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Next up is the sweet Kandy Kush from Reserva Privada, an Indica-dominant cross between Trainwreck and OG Kush. Thanks to the latter strain, this variety prefers colder climates and is naturally resilient to mold and mildew. You’ll have nice yields whether you’re growing her inside or out, and the buds will be deliciously fruity, dense, and sticky. You can definitely add Kandy Kush to the list of awesome mold-resistant indoor strains.

Durban Poison, of Course!

Durban Poison (Dutch Passion) Durban Poison (Dutch Passion)
  • Photoperiod
  • Light feeling
  • 16 - 22 %
  • 500+ g/m² indoors
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This wouldn’t be a list of the best mold-resistant strains without Durban Poison, a pure Sativa that’s exceptionally resistant to mold and disease. This strain has been around for decades, and for good reason: she’s strong and hardy, but still gets absolutely massive when grown outdoors, with huge yields despite a short flowering time of 8 to 9 weeks. The heavy, resin-laden blooms make for 500g/m2 (1.6oz/ft2) of resilient buds that are also 22%  THC potent.

Pest-Free with Panama

Panama (Ace Seeds) Panama (Ace Seeds)
  • Photoperiod
  • Straight to heaven
  • 15 - 21 %
  • High
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Brought to the masses from Central America, Panama is a triple threat Sativa that brings together the best characteristics of three mold-resistant strains: Panama Goddess, Green Panama, and Panama Red. This incense and vanilla-flavored strain can handle a variety of climates provided you supply her with enough nutrition! Expect to see alluring pinkish-red pistils packed into large, fragrant buds that will be sticky with 21% THC resin once it’s flowering time! Great both indoors and out, Panama has exceptional resistance to pests and humidity.

Glookies: an All-Star Genetic

Glookies (Barney's Farm) Glookies (Barney's Farm)
  • Photoperiod
  • Begin your own mind trip
  • 25 %
  • 700 - 800 g/m² indoors
    2000 - 3000 g/plant outdoors
Go to strain

Glookies has earned her spot on this list from her reputation as an award-winning strain that’s capable of enduring days of rain and wet weather, or generally high humidity, without catching mold. She’s also an extremely heavy yielder: with plenty of nutrients, light, and water, you can expect an awesome harvest of 800g/m2 (2.6oz/ft2) indoors or 3000 g (6.6 lbs) per plant outdoors! Expect each of those buds to deliver a divine cerebral and creative high like no other strain on the market.

Super Silver Haze for Super Buds

Super Silver Haze (GHS) Super Silver Haze (GHS)
  • Photoperiod
  • Legen - wait for it - dary
  • 19.11 %
  • 800 g/m² indoors
    1500 g/plant outdoors
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Super Silver Haze is another strain with Northern Lights ancestry, but this time bred with Skunk and Haze to create a 70% Sativa hybrid. She gets her mold resistance from a thick layer of trichomes and high resin production – perfect for novices growing weed in high-humidity environments. Super Silver Haze likes hot, equatorial climates but also does well indoors. Give your plants lots of nutrients and, come harvest time, you’ll see the results in immense, drooping branches full of sweet and citrusy 19% THC buds that glitter with resinous trichomes.

Sweet Ecstasy: Sugar Candy

Sugar Candy (Delicious Seeds) Sugar Candy (Delicious Seeds)
  • Photoperiod
  • 25 %
  • Peaceful warrior
  • 600 g/m² indoors
    2000 g/plant outdoors
Go to strain

Although this list isn’t in any particular order, you could say we’ve saved the best for last with Sugar Candy – a sugar rush-inducing classic. This Indica-dominant strain is famous for her huge, dank buds containing a potent 25% THC. Sugar Candy is famously easy to grow from seed and also happens to be one of the most mold-resistant weed strains available. Although her natural resistance to sickness will make the growing process easy on you, be sure to give your plants some extra love and attention toward the end of flowering to ensure quality buds that ooze mango and spice flavors. An extra bonus for showering Sugar Candy with TLC is a ridiculous amount of resin, making these cannabis seeds a great choice for concentrate enthusiasts.

Say No to Mold with These Mold-Resistant Strains

Mold is a danger for both indoor and outdoor grow operations, and can render a cannabis harvest totally ruined. By making sure to keep the temperature and humidity under control, you can mitigate the chances of mildew finding its way into your crop. Choosing a strain that’s specifically mold-resistant can nip the problem in the bud before you even start growing. What are your favorite mold-resistant weed strains to grow in wet conditions? Let us know in the comments below.

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Informative read and relevant as mold can ruin a lot of hard work.We have had an exceptionally wet summer here in south eastern OZ with the worst at harvest time. GG4 from the original breeders out performed Blue Dream and Gold bar Kush in the mold department. The less dense sativa like bud structures of the BD and GG4 helped here. Might give Super Silver Haze a run next year along with the GG4 which impressed me with its growth/structure and resilience to pests and mold. Beware of the strong pungent tomcats piss odor of the GG4 if stealth is required! Humboldt's Green Crack is another I would recommend for our region but again the GC has a strong skunk type odor.
Hello Melon,Thank you for sharing your experience. Indeed, when growing outdoor you may need to take care of the specific smell that plants produce. You may try different methods to fight the smell indoor, but order it will prove to be a bit more difficult, sometimes planting a smelly plant around would help, but on the other hand it may attract undesirable insects
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