8 Resilient Mold Resistant Cannabis Strains for Wet Climates

Most mold resistant cannabis strains list. Growing cannabis in wet humid climates is a challenge without some good mold resistant strains. The best mold resistant strain seeds grow hardy, resilient cannabis plants that can fully finish up dank outdoors in rough conditions—even in the pouring rain.

wet climate mold resistant cannabis cultivation

Why Mold Resistant Strains?

Have you ever dealt with pounds of moldy cannabis?

Plants soaked, buds mushy, trashed and covered in black bud rot or grey/blue mold (Botrytis infection). Only to harvest and bring them inside to further multiply the problem.

Many cannabis growers feel it is impossible to grow buds worth any value in wet, rainy climates. They have seen the worst of it—pulling immature plants due to bad weather. Early harvests result in poor yields of scrawny, undeveloped buds that are difficult to market.

Here in Hawaii, we are faced with long periods of heavy rain and high humidity. The town of Hilo, Big Island, Hawaii is one of the wettest areas in the world, at an average of 120 inches of annual rainfall.

Yet, people are producing amazing results outdoors growing marijuana in Hawaii.

How so?

It may come as a surprise to hear there are cannabis varieties that thrive in wet conditions.

Through generations of inbreeding and cross pollination, these strains have adapted to humid and rainy environments. The resilience against mold is likely in their genes, a natural response for surviving the flowering process long enough to mature seed.

There are great mold resistant cannabis strains for sale that you can buy today as regular and feminized seeds to start growing your own!

cannabis field colombia outdoor
Credit: Nicolas Enriquez

Landrace Strains

A landrace cannabis strain is a breed of marijuana that has grown in an area by itself for generations. Also known as feral cannabis. The plants grow and adapt to the local climate, passing on knowledge gained to their offspring.

Landraces from wet climates show superior mold resistance, vigor and hardiness. Sativas from South and Central America, Asia and Africa are renowned for their strength in both growing and bud potency. These cannabis varieties are mostly sativas. However, cross pollination does occur.

Landrace strains are ideal for breeding programs. They can prove to be stable, uniform genetics. By crossing the landraces to high yield cannabis hybrids, the best of both worlds collide—strong genetics that bring in good returns.

Thai Sativa

thai sativa mold resistant strains outdoor huge

The sativa varieties from Thailand, Laos and Myanmar are some of the tallest, longest flowering and most mold resistant strains in the world. A rarity in the modern cannabis market, these strains are revered among connoisseurs for their powerful psychedelic effects.

The trick to growing Thai sativa is to wait… and wait some more! Started from seed in the spring, many phenotypes won’t be ready to harvest until January or February the next year! The plants have a tendency to drop their leaves during mid-flower, so don’t mistake this as the plant dying off. The buds will keep bulking up in time.

The taste and smell of Southeast Asian sativas is unique, resembling rotten fruit or anise. The high has virtually no ceiling—at high doses the effect is comparable to magic mushrooms.

 

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Malawi Gold

malawi gold cannabis strain outdoor mold resistant

Considered one of Africa’s best sativa strains, Malawi Gold by Seeds of Africa is harvested in the Central and Northern region of Malawi. The hot and humid conditions of this subtropical region is responsible for the superior mold resistance Malawi Gold has developed.

The plants grow strong and tall with lots of branching and the potential to get huge. Recommended for outdoor cultivation in warm climates. Its long flowering time of up to 16 weeks makes this strain a challenge for many growers.

Malawi Gold buds are large, incredibly resinous and have a deep gold, almost amber color. It smells and tastes like exotic pineapple/lemon and spicy incense, which is enhanced by the traditional Malawi Cob curing method. The high is extremely psychoactive.

 

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Kwazulu

south african kwazulu resilient weed strainThe search for a fast flowering, mold resistant sativa is over. This 100% sativa variety grows wild to the north of the Drakenberg ridge in South Africa. The climate is wet and cool at the high elevations, which experience snowfall in the winter.

Kwazulu matures fast at only 65–75 days of flowering, allowing easy cultivation both indoors and outdoors. The plants grow quickly into a tree formation and develop unusually large colas. Very resistant to mold, powdery mildew and pests.

Rewarding yields of marketable, big buds with a fruity aroma and flavor. Kwazulu gives an energetic high felt mostly in the head. Legend has it this strain was used before battle by Shaka Zulus, one of Africa’s farmer warrior tribes.

 

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Colombian Gold

colombian gold landrace resistant cannabis strainColombian Gold is a legendary landrace sativa originating from the Santa Marta mountains of Colombia. This strain has laid the foundation for many modern cannabis strains as we know it—the infamous Skunk #1 is said to have Colombian Gold genetics as well as countless other creations.

Below 8000 ft. elevation, you can find anything from typical Andes woodland to dense tropical forests. The indigenous people of this area have cultivated cannabis for generations. These plants are tall, vigorous, fast flowering and show excellent mold resistance and yield potential.

Musky, spicy and fruity—Colombian Gold is a savory smoke that stands out for her taste and potent, psychedelic effects. Dating back to the late 1700’s, records show Simón Bolívar used the seeds as he traveled around the Amazon rainforest, trading spices and medicinal plants with the natives.

 

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Hybrid Strains

A hybrid is a crossbreed—the offspring of two different cannabis varieties.

Hybrid strains offer many advantages to the grower.

The dense, resinous bud qualities of an indica combine with the larger stature of a sativa to create a strain that grows big while still producing top shelf dank buds.

Hybrids can have what’s called “hybrid vigor”, a trait that allows them to outperform both of their parents in growth speed and yield. See—High Yield Strains

Hybrids make up the majority of genetic stock on the market. Nearly all the popular modern strains are hybridized such as: Blue Dream, OG Kush, Diesel, Girl Scout Cookies, Trainwreck, White Widow, etc.

When searching for a suitable hybrid, take a look at its parents. For best defense against wet humid climates, find strains that are bred from mold resistant or wet climate landrace strains.

Hybrids made from landraces or hardy inbred strains typically perform better outdoors than alternatives bred for maximum production indoors (although there are exceptions).

Super Silver Haze

super silver haze strain-plant

Originating from the classic cannabis strains Skunk, Northern Lights and Haze, Super Silver Haze is a famous award-winning sativa hybrid prized by commercial cultivators and connoisseurs alike.

An ideal outdoor strain for warm climates, the plants get rather tall and unwieldy if allowed to. Indoor growers are advised to use SCROG or LST combined with a short veg cycle to control height. After a long flowering time of 10–11 weeks, Super Silver Haze rewards growers with giant colas—so large they may require staking. Resistant to mold and disease.

Sweet, herbal aromas and flavors. Long lasting effects that provide a potent, cerebral head high, progressing into a deep state of relaxation. A favorite smoke of many.

 

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Jamaican Pearl

jamaican pearl marijuana strain mold resistantJamaican Pearl is a cross of the mold resistant sativa hybrid Early Pearl with the Jamaican female plant used to create Marley’s Collie. This created an ideal sativa for outdoor cultivation—even at northern latitudes—that’s quick to flower and shows great resistance to mold.

A tall plant, Jamaican Pearl displays a typical sativa growth pattern, but develops quite bushy compared to others. Its flower clusters run together, filling in the space between internodes with long “banana” buds. This characteristic allows for abundant harvests, which comes after 9–11 weeks of bloom.

The taste and aroma of Jamaican Pearl is sweet, earthy, fruity and spicy, reflective to the rich diversity of its genetics. The effect produces an uplifting, happy, warm feeling that radiates throughout the mind and body.

 

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Bangi Haze

bangi haze hybrid strain of weed

Bangi Haze, named for its Nepalese incense aroma, is one of the most stabilized sativa dominant hybrids in the Ace seeds catalog. This fast flowering, easy to grow cannabis strain is an excellent choice for cultivation in a range of harsh climates–from rainy to cold outdoor areas as well as indoors, too.

The plants grow compact, columnar and easy to work with for a sativa. It produces dense buds, loaded with trichomes. Superb mold resistance. Ready to harvest at 9–10 weeks of flowering.

Bangi Haze has a sweet taste, like honey or liquor. The high is similar to Congolese sativas, very energetic.

 

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Holland’s Hope

hollands hope mold-resistant weed strain

One of the first Dutch outdoor varieties, Holland’s Hope is a mostly indica strain grown in Holland since the 1980’s. Developed specifically to thrive in cold climates, it is also very mold resistant.

As with other indica dominant strains, Holland’s Hope remains short and stocky, with lots of branching and an overall sturdiness. An ideal candidate for pruning techniques. It has a fast flowering period of 50–60 days. The buds are dense, heavy and grow big.

Classic indica smell and flavor—pungent, earthy, hashy and spicy. The potent effects hit hard in both the mind and body, leaving users feeling calm and sedated. A great choice for beginner growers and experts alike.

 

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For more information on selecting mold resistant marijuana strains, visit our homepage for the Best-Selling Cannabis Seeds

 

Disclaimer: Know your laws. Check federal and state/county regulations before buying seeds online. We do not promote or undertake in illegal activity.

 

Read next: Best Marijuana Seed Banks, Cannabis Seeds for Sale

51 thoughts on “8 Resilient Mold Resistant Cannabis Strains for Wet Climates”

  1. Aloha braddah,
    Much mahalos for this blog. This article and the “Top 10 Mold resistant…” are the kinds of info I’ve been looking for for years. So glad I stumbled into your blog. Well-written and very comprehensive. Keep it coming! Aloha, from leeward Oahu.

    Reply
  2. Hey braddah, I get one question maybe u can answer. Besides the mold problem, another one that messes me up is spider mites. U guys don’t have that prob in the BI? I tried using all the stuff the mainland guys talk about on the message boards….all that kind insecticidal soaps from Home Depot and whatevs. Kinda works at first when I spray everyday, but as the plants get bigger, seems like I fighting one losing battle. I’d like a locals perspective on spider mites. Mahalos!

    And one more time: thanks for your blog! Way more fun reading about locals growing. Shoots!

    Reply
    • Not really a problem on the BI. There are various marketed products available for sale, but rubbing alcohol mixed with about 40% water will kill the buggers. Also, if you’ve ever watched the series Trailer Park Boys, they collect ladybugs to put on their plants to combat the spider mites. Aloha!

      Reply
      • Those f*cking lady bugs do work but they burn themselves out flying in to the thousand watt hps I have. Personally, I wouldn’t recommend it. There’s stuff at the plant store that works great like “liquid lady bug” and a few others that are great for around 25 dollars.

        Reply
        • When you buy ladybugs they usually come in a plastic bag before releasing them add a cap full of Coca-Cola to the bag and shake ladybugs will not fly away as their wings are stuck to their body and they will stay and lay eggs on the plant their babies are just as hungry as they are

          Reply
    • Plant Chives. I have then spread around my garden and have no spider mites. they grow like grass, you cut them and they come up again. I had a bid mature one and dived it and put it around the edges. Onion flavor. add to many things.

      Reply
    • Praying mantis. They work like a charm for any type of bug grubbing on your crop. There visious too and don’t sh*t all over like lady bugs. There also a bit smarter avoiding the lights and rather use them to lure in pray

      Reply
  3. Nice work braddah, we need it. Hopefully my high CBD Supreme Durban has kept its mold fighting genetics after the cross.

    Mahalo nui.

    Reply
  4. Aloha,

    I live on the leeward side of the big island and wanted to add another strain to your list of strains that grow well here, or in wet climates.

    Kilimanjaro by WOS.

    I never have ever had a mold or mildew problem. Grows well even in lava cinders. Lol

    Malama pono.

    Reply
    • Awesome Chris! I’d love to see some pics of that Kilimanjaro grown on the Big Island… I’m on the windward side. Come over for some doobies!

      Reply
  5. Have my Med license on maui. Does anyone know where I could get a few seeds of these strains? Love to try the m out. I get to big island occasionally.

    Reply
  6. Purple Maroc, Purple #1, Sweet Purple, Polm Gold, Passion, Shaman, Purple HashPlant, PCK (Pakistan Citral Kush), CDG (Congolese Double Gold), Arne, Viking and many more. All those strains are very fast – max 8 weeks flowering. Purple genetics are very very resistance check them out 🙂

    Reply
  7. Being a grower in the foothill regions of Maine, I’ve searched for mold resistant strains high and low, lured in by this or that description about such and such a strain’s ability to withstand moisture and temperature fluctuations, which are a problem up here come September and onwards. What I’ve come to find over the years is that there does not exist a rot resistant strain, at least not any I’ve grown. They all submit to the reality of temp swings, dew, and rain. Power plant and Durban I grew last two years, and they have proven no different than any of my other plants in regards to mold and pm… They both mold up and once they get it, it justice accelerates all the same.

    Reply
    • Hi Jay, I’m in a wet climate area too… I wouldn’t give up just yet tho.. I’ve had good luck with Thai strains, those Asian sativa are the best mold resistant strains in my opinion but I doubt you can find any real deal Thai strains that would finish up in time for outdoors where you’re at unless you had a greenhouse with additional lighting to bring her into Dec. WOS Kwazulu has been pretty rock solid for us outdoors in even the rainy season in Hawaii. Anyways good luck and hope you get the mold situation figured out.

      Reply
      • Nice Su I like Jack Herer too, nice creamy buds. Yeah how is Maine treating you? I have a buddy up there growing and he loves it. Haven’t tried vortex yet tho looks pretty good.

        Reply
    • Hey jay..I’ve had the same luck as you with the Durban and power plant. I live near California boarder on the ocean. Seems like it just depends on the weather each year. Ive had some luck with white rhino and pennywise although not in the same years.. rhino blooms later than Penny so depending on weather one will get budvrot while the other lives on. Just be watchful..
      Thats my lucky strains.. although I always try new ones every year..
      just plant extra..haha

      Reply
  8. Hello from the wet southern oregon coast, I finally have the upper hand in this battle it does not matter the strain! AIRFLOW AIRFLOW AIRFLOW it’s all about the AIRFLOW. Lollipop the bottom third of the plant and completely remove the entire core of the plant. It sounds terrible but I’ve lost a lot because I just wanted to keep all those buds n branches thinking “amount” but losing to much to brush off to the side so I encourage any grower out there to chop the f out of one plant in the garden more than you ever have clear any and all leaf and or bud or small branch from every crotch on all the branches (ladys love a well groomed crotch) but that’s where rot starts not on the buds it starts there and takes the highway to the weakest buds and battles to the death of a lot of buds, anyway call that your tester plant and watch the difference side by side and the outcome is quality bigger tops that show you what your strains can handle and gives you the opportunity to take yourself to school and learn about it hands on (take it from this haoli growing near the beach is tough but can be done n done well)

    Reply
    • Some great tips Rocky, thanks for sharing. I agree with you on most things, airflow yes, cleaning out plants yes (to an extent) however here in Hawaii the strains really seem to matter, many indica doms will get trashed with mold next to sativa strains clean as a whistle right next to them. Anyways thanks again for visiting and here are some more tips to stop bud rot, gray mold in cannabis.

      Reply
    • Thanks dude. I have been fighting for a long time in Georgia and last 6 months I have been doing exactly what you are talking. I keep each branch clean till near top fighting also with 35% hyd peroxide deluded to 5% and lots air flow but what helped most is clean lower branches.

      Reply
      • Jim,

        What have you been growing that has been successful in GA? I live there too and looking to plant some autos very soon. Or should I wait until late August?

        Thanks!

        Reply
  9. For what it’s worth, since I’ve been using cannabis oil before bedtime for better sleep, I’ve acquired high levels of aspergillus internally! I did NOT have high levels before I started, because I had done an organic acids test and there was NO mold. Now in 2018 and another organic acids test, high levels. BEWARE. I need to explore this with the facility I use.

    Reply
  10. If it’s humid enough airborne fungi just attack any and all parts of the plant. I’ve found copper oxychloride mixed with non toxic acrylic paint works well. Problem with defoliation is it opens up wounds on the plant for pathogens to enter.

    I prefer to remove infected sections, cut out any rotted or diseases stem tissue, seal with acrylic paint/copper mix. Doesn’t hurt the plant, keeps it going. I switch.to Foliant sprays with chelated nutrients every 3-4 days at this point. This is due to stem infection and reduced nutrient transport.

    I stop all spraying 14 days prior to harvest and coax them home. Even heavily infected plants I’ve managed to bring to maturity this way. It’s a lot of work. You need check nodes and branches, leaves and stem daily for signs of infection. Preventative maintenance Foliant spraying with a fungicide can be beneficial. However I feel airflow is paramount.

    Reply
  11. Been fighting mold for 15 years here in MA. I tried many “mold resistant strains” that were NOT mold resistant at all. Last year i tried 6 mold resistant strains. The rule here has been the more frost, the more likely the mold will hit it fast. PEYOTE COOKIES was the amazing exception. It rains here every other day in the fall. Even worse is the heavy soaking dew landing on the buds every morning. Yet Peyote Cookies was almost MOLD PROOF. I gave two friends P.C. plants nearby who also had no mold issues with this strain. AIRFLOW, clearing fan leaves and useless branches is HUGE, i agree. Having the best soil will greatly strengthen the immune system of even indoor strains, outdoors (earthworm castings, good black loam and a huge hole).. Also the most DIRECT SUNLIGHT will help in about every way. I had to skirt a couple big trees. I also like THE CHURCH from GREEN HOUSE seeds. Not quite as mold proof but there will always be a couple in my garden.

    Reply
    • Hi Dana thanks for sharing your experiences battling mold, I agree from what we’ve seen too- sunlight, airflow and cleaning plants are huge advantages that can save crops during the end and also healthy soil for sure helps the immune systems.
      Jared

      Reply
  12. Hi there,

    I have had a growroom infested with PM, almost completely… Ive grown some joystick clones and love triangle and all of them were pretty sick. But there were “accidentally” some clones of blueberry hashplant also and these plants were in the middle of the completely sick joysticks and triangles. they were overcrowded, touching and laying on each other. Blueberry had not a single leaf sick with PM. But i can not find any seeds of BH online.. the temperatures were sometimes around 31Celsius and at night around 22C. humidity around 35 – 55%.
    so this blueberry genetics is superb i guess. also buds much better and super smelly, hard, the flowers were thriving in the middle of the PM battlezone…

    Reply
    • Hi Jakub,
      Funny you say that, I was just planning on getting some of those again for this year. I’ve also had good experiences growing Blueberry x Hashplants when I did last time, an awesome strain that never got mold growing outdoors in our wet climate. Seems like most places are sold out of them right now but I did find some on Seed City here.
      Good luck

      Reply
  13. Growing in the uk for 15 years and always the mould issue until last year, and i found THE MOST botrytis resistant strain ever, LEDA UNO from KC Brains. It finishes late 15-31oct and some of the plants are overly leafy, but some are fantastic and all mould resistant like nothing else i have tried, great flavour too and strong sativa hit. I went back to have a look at the leftovers on the plants on 10 December last year and there was still only 10-20% mould on them, i had to go back with a bag and pick some popcorn!!! I have managed to save the two best plants as clones over winter so this year should be even better. I’m also attempting to make fem seeds from these genius plants at the moment. Who would have thought KC Brains, laziest breeder ever, i had tried other stuff of his years ago and it was all pants. He doesn’t even mention mould resistance in the write up. Happy 2019 season all !!!!

    Reply
    • Awesome thanks for dropping by and sharing that, I would like to see how that strain grows in the tropical wet Hawaiian climate here. Good luck with your growing and seed breeding.

      Reply
  14. Indoors humidity easy to control in Veg. Room. Light will run it off. Keep your Temp 75 or below is absolutely best mold control I have found.

    Reply
  15. I have experience growing on Maui, Portland Oregon, and San Francisco. I found that if you can access the plants easily, manually shaking the water off helps immensely. Preferably just at the start of a sunny spell, even in continuous downpours. It helps quite a bit, indoors you should be able to control it by keeping moisture off the foliage and low humidity…

    Reply
  16. Every single Durban Poison plant I have seen grown(outdoors in New England) and grew myself has had mold issues. Some worse than others both botrytis and PM mostly botrytis though. In fact I am about to go cut bud rot after I am done writing . Still I recommend it she’s quick & would be a great parent to quicken a favorite strain. Being sativa I perfer to keep the feed light almost nothing when in fresh hole (ground). Do keep the rain off her with a simple poly roof. Also likes a long cure to bring out her sweetness.

    Reply
  17. Do not have website. I live in Ontario near Toronto. I wanted to grow plants that are resistant to mildew and mould.what would be the best 4 strains and the best place to buy gem seeds

    Thank you Angie

    Reply

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