Best Mold-Resistant Cannabis Strains
We’ve written quite a bit about how mold can affect your cannabis, but we thought it might be helpful to provide a list of some mold-resistant strains!
List of Mold-Resistant Cannabis Strains
Strains for Indoors
Although nothing can fix bad growing practices, some strains are more resilient towards mold than others. If you’re growing in a smaller space, or if you live in a part of the world that gets very humid, it can’t hurt to get a more mold-resistant strain!
Here are some strains that are mold-resistant and suitable to being grown indoors:
- Moby Dick – Very easy to grow, very mold resistant, VERY potent. Smells a bit like peppermint but has also been described as having an old-school skunky flavor similar to popular sativa buds from the early 90’s. Great yields, too!
- Sweet Tooth – In California where I live, this strain is very popular at dispensaries and often goes for very high prices! Well now you can grow it at home, too! It has a sweet flavor/taste that is reminiscent of chocolate, and the effects are powerful. As a bonus it is mold-resistant from its Hawaiian roots!
Strains For Outdoors
Although definitely not foolproof, it can’t hurt to get a more mold-resistant strain if you live in a humid environment, or if you’re an outdoor grower who gets cool wet conditions early in the fall!
Here are some strains that are mold-resistant and suitable to being grown outdoors:
- Holland’s Hope – Designed specifically for outdoor growing (and not really suited to indoors), this strain is ready to harvest in late September or early October in the northern hemisphere. This strain has been bred for bud appearance, potency, yields, and overall weather resistance. Plants get 3-7 feet tall on average and produce a “knock-down” and “euphoric stone” effect that’s been honed for over three decades, with unique effects that are difficult to find with indoor strains. The buds are very mold-resistant and tend to get very fat. Buds often take on purple hues as they approach harvest.
- Frisian Dew – A popular strain because about half of the plants grow buds that turn an incredible, vibrant purple (the other half of plants grow green buds but still beautiful and the effects are just as good). This strain tends to grow the highest percentage of purple buds if plants in the flowering stage are exposed to very sunny weather with many hours of direct sunlight each day, as well as if plants also get cool temperatures at night. This strain is very well suited to outdoor growing, even in northern climates, and is especially resistant to mold.
The plant in the middle with the dark purple buds is Frisian Dew
- Jamaican Pearl – This fruity-smelling strain grows very well outdoors, and is not only mold resistant but it also has great yields. It’s known to produce a unique cerebral in-your-head effect that lasts a long time and won’t put you to sleep. Harvest Jamaican Pearl buds before the trichomes start turning amber for the best effects!
Example of a dense Jamaican Pearl bud
More resources to help you in your fight against mold!
Unfortunately your plants are much more likely to suffer from mold if you live in a humid environment or have cool, wet weather 🙁 Although no strain is fool-proof, some strains are better at preventing mold than others! Get a list of some of the most pop
Mold Mildew Resistant Strains, Cannabis Seed, Marijuana Seeds, Sativa, Auto or Indica Seed
Select an option below
Best-Selling Cannabis Seeds Dec. 2020
|Strain of the Week (Fem)||9 weeks||21 oz/3x3ft|
|White Widow (Fem)||9 weeks||18 oz/3x3ft|
|OG Kush (Reg)||8-10 weeks||500-600 g/m2|
|White Widow (Auto Fem)||8 weeks from seed||4-6 oz/3x3ft|
|Super Skunk (Fem)||8 weeks||18-21 oz/3x3ft|
|Afghan (Reg)||8-10 weeks||500-600 g/m2|
|Blueberry (Auto Fem)||8 weeks from seed||4-6 oz/3x3ft|
|Gorilla Glue (Fem)||8 weeks||16-18 oz/3x3ft|
|Sour Diesel (Reg)||10-12 weeks||500-600 g/m2|
Top 10 Best Outdoor Strains
The top 10 best outdoor strains to grow (listed below) are mostly indica-sativa hybrids, with a few pure sativa strains too. All high-yielding strains good for growing outdoors. Mold and mildew resistant strains to buy as regular or feminized cannabis seeds (aka marijuana seeds or weed seeds). The plants are resistant to mold, or are at least less susceptible than other so-called “mold resistant” strains we’ve tried outdoors in Hawaii.
Diesel (New York City Diesel) | Soma Seeds
NYC Diesel, or New York City Diesel, is a great strain for outdoor cash croppers. This surprisingly mold resistant strain produces sweet, chunky, heavy buds that reek of petrol. NYC Diesel is a 60% sativa, 40% indica hybrid first grown in the Big Apple.
🌱 Plants can shoot up to 3 meters tall. NYC Diesel grows vigorously, especially when provided extra hours of intense light. Also does well indoors grown in a hydro setup.
⚖️ The buds have a dank indica appearance despite it being a sativa dominant strain. Yields are high as well as quality.
💦 Easy to grow mold resistant strain from seed.
👍 Breeds strong hybrids and clones easily, NYC Diesel cuttings root quick.
NYC Diesel is a good all-around easy growing strain for producing good pot. As long as the plant has enough airflow, its buds have no problem finishing outdoors in wet climates. They can even handle being rained on. To be honest it’s not the tastiest strain out there, but the smell is real strong and it yields better than most candy strains.
|Genetics||Originates from the Chemdawg line|
|Flowering Time||10-12 weeks|
|Pack Size||1/5/10/50/100 seeds|
|Yield||Indoors: 475 g/m2;
Outdoors: 950 g/plant
Buy NYC Diesel Seeds🌱
Blue Dream | Humboldt Seed Organization
Blue Dream is a super popular cannabis strain for a reason. It grows top shelf quality, dank buds on sativa plants that can get huge. High 17-24% THC content. This 70% sativa dominant hybrid originates from the West Coast.
🌱 Plants grow to enormous sizes. Blue Dream is a true beaster strain.
⚖️ High yields of potent & fruity sweet herb. The buds have colorful blue and silver hues, shining in a thick coat of crystals.
💦 Mold resistance is well above average, but make sure to give this strain some extra care and attention towards the end. The resulting A grade nuggets will thank you.
👍 An extremely easy to grow strain from seed and clone.
How many growers have been getting rich off Blue Dream? Some are against growing something so popular, but the fact is people love smoking Blue Dream, and want to buy it – a constant demand needs a constant supply.
|Genetics||Blueberry x Haze|
|Flowering Time||65-70 days|
|Pack Size||3/5/10/25 seeds|
|Yield||Indoors: 350-500 g/m2;
Outdoors: 2-3 kg/plant
Buy Blue Dream Seeds🌱
South African Kwazulu | World of Seeds
Kwazulu is a landrace sativa that produces a massive dominant cola filled with big stinky buds. It is a true mold resistant variety, suitable for cultivation indoors or outdoors. This is one of the few top grade pure sativa strains that can compete with the best marijuana strains of today’s market.
🌱 Plants have the potential to grow large. If provided with a long vegetative growth cycle, Kwazulu turns into a tree.
⚖️ Buds are very big in a bag and look stunning, a real eye-catcher when finished good. Kwazulu has a pleasant smell and taste. Yields are well above average, more than most pure sativa strains.
💦 Does well outdoors with its high resistance to Botrytis cinerea (grey/blue bud mold) during flowering.
👍 Easy growing strain with a nice buzz. Stable genetics for breeding.
My last Kwazulu plant got drenched in a 10-day tropical rainstorm right before harvest. After the storm, there was no mold damage, simply a few brown spots of rot had to be picked out. Truly a rugged strain.
|Genetics||South African landrace sativa|
|Flowering Time||8-9 weeks|
|Pack Size||3/7/10/12 seeds|
|Yield||Indoors: 350 g/m2;
Outdoors: 450-500 g/plant
Buy South African Kwazulu Seeds🌱
Grand Daddy Purple | Granddaddy Purple (Ken Estes)
Grand Daddy Purp, Grand Daddy Purple, or GDP by Ken Estes is the best choice for growers who want high grade purple pot. These famous West Coast buds are saturated in trichomes and packed with sugar leaf down to the stalk, resulting in very sticky trimming scissors. The smell of real deal GDP is heavenly – get a good whiff of it and the strong smell stays in your head all day. GDP is 70% indica 30% sativa.
🌱 Plants grow into a bushy indica plant structure. Grand Daddy Purple grows at a moderate speed, faster than a lot of other purple strains.
⚖️ Yields are medium to high. Grand Daddy Purp is a heavy feeding plant, so make sure there are plenty of nutrients available to get maximum returns.
💦 Performs surprisingly well when faced with rain and high humidity despite it being an indica dom. Good air circulation will ensure success.
👍 Amazing quality and appearance. Purple colors come out late in flowering at cooler temps.
Grand Daddy Purple buds are always in high demand. I got a hold of the seeds the first year Ken Estes released them and have been impressed with the strength of this strain, easy to grow anywhere and breeds well.
|Genetics||Purple Urkle x Big Bud|
|Flowering Time||7-8 weeks|
|Pack Size||5/10 seeds|
|Yield||Indoors: 300-450 g/m2;
Outdoors: 400+ g/plant
Buy Grand Daddy Purp Seeds🌱
Pineapple Chunk | Barneys Farm Seeds
Any type of weed with the word pineapple in its name is good marketing. Whether that strain really tastes like pineapple is uncertain, but Pineapple Chunk is a productive high yield strain that has a strong tropical fruit flavor. Some phenos really do taste like pineapple, so buy a few seeds to find a winner for cloning. Real dank buds that weigh out heavy on the weed scale. 60% sativa, 40% indica.
🌱 Plants can grow into multi-pound bushes reaching up to heights of 10 feet tall. Indoor growers may consider flowering Pineapple Chunk early to keep this strain compact.
⚖️ Buds that please the general market: plump, fruity, skunky, heavy and dense. Yields well. Proper care of this strain leads to abundant yields of creamy, pineapple dank.
💦 Handles outdoor climates well despite being a candy hybrid. A fast flowering marijuana strain.
👍 Very easy to grow from seed. Suitable for beginners as well as the experienced cannabis cultivator. Pineapple Chunk can handle heavy fertilization, so a hearty diet of nutrients is recommended.
Some phenotypes have the pineapple fruity smell, while others have a more cheesy taste and aroma. All posses a heavy-hitting indica high and very stoney smoke. Hawaiian growers love this strain for their outdoor medical gardens.
|Genetics||Pineapple x Cheese|
|Flowering Time||55-60 days|
|Pack Size||1/3/5/10 seeds|
|Yield||Indoors: 650 g/m2;
Outdoors: 750 g/plant
Buy Pineapple Chunk Seeds🌱
Wild Thailand | World of Seeds
Thai strains are pure sativa landrace strains that grow into monster cannabis trees. They are some of the largest cannabis plants on earth. Thais and other Southeast Asian sativas are prized by cannabis connoisseurs for their high THCV content, known to induce psychedelic effects comparable to magic mushrooms.
🌱 Grows tall quick. Thai strains will shoot up fast above other plants in a grow room. A stretchy growing plant that loves to suck up light.
⚖️ Yields can be massive but Thai strains have a super long life cycle that can take up to a year from germination. That’s why you don’t see pure Thai sativa everywhere on the market. Not for the quick cash cropper, more for the rare strain collector. World of Seeds sells a faster flowering Thai strain, named Wild Thailand.
💦 Ideal for tropical and subtropical climates, or northern climate growers who are up for the challenge. Thai strains are some of the most mold resistant strains in the world.
👍 The smoke from Thai strains is super smooth, making it great for phat bong hits. Thai strains have a unique musky flavor like lavender or exotic spices. Good cheap cannabis seeds.
The secret to harvesting top quality Thai weed is easy – just don’t pull early! The plants will turn yellow in color and drop a lot of its fan leaves during late flowering. Wait past this stage and you’ll really see what these buds are capable of.
|Genetics||Thai landrace sativa|
|Flowering Time||12-16 weeks or more!|
|Pack Size||3/7/10/12 seeds|
|Yield||Indoors: 300 g/m2;
Outdoors: 1200+ g/plant
Buy Wild Thailand Seeds🌱
Super Lemon Haze | Green House Seeds
One of Green House Seed Co’s best selling strains, Super Lemon Haze is an 80% sativa hybrid for anyone who loves fruity pot. Its buds taste and smell and just like real lemons.
🌱 Grows big, although not the fastest variety from seed. Can be rather woody plants that get sharp alligator skin-like serrated edge leaves.
⚖️ Buds are lemony, fragrant and pack a stench that reeks through the bag. Beautiful, shiny and dense nuggets. Top shelf bag appeal. Yields as well as any other top cash cropper strains, which is rare for super fruity hybrids.
💦 Does well outdoors or indoors, growing into a sativa tree type pattern. These sativa dominant buds are not overly dense, which helps them breathe in heavy moisture climates.
👍 Relatively easy to grow anywhere.
Super Lemon Haze won back-to-back first prize at the Cannabis Cup and has remained a top seller for over a decade at the best marijuana seed banks.
|Genetics||Lemon Skunk x Super Silver Haze|
|Flowering Time||10 weeks|
|Pack Size||3/5/10 seeds|
|Yield||Indoors: 800 g/plant;
Outdoors: 1200 g/plant
Buy Super Lemon Haze Seeds🌱
Bubble Gum | Serious Seeds
A classic fruity weed strain, Bubble Gum is a stocky 80% indica strain sporting lush, velvety flowers that taste identical to bubble gum when smoked. This cannabis strain is full of hybrid vigor.
🌱 Plants take on a wide, bushy stature. They grow vigorously, high in chlorophyll, with very fat stalks.
⚖️ Buds are soft as silk to the touch, yet have a good density. A high yielding indica strain.
💦 Try to keep Bubble Gum out of the rain. Not the most mold resistant strain out there, but it does better than many other indica hybrids.
👍 Easy to grow, easy to clone. Also does great under LED grow lights, forming up full and finishing solid to the end.
Bubble Gum cannabis seeds are a superb seed choice if you want a mold resistant candy strain. Bubble Gum has a long history on the Hawaiian Islands, and is a trusted legend with the old-time growers as well as the younger crowd.
|Genetics||Originated from Indiana, USA|
|Flowering Time||8 weeks|
|Pack Size||6/11 seeds|
|Yield||Indoors: 350-500 g/m2;
Outdoors: 450-550 g/plant
Buy Bubble Gum Seeds🌱
Blue Widow | Dinafem Seeds
Blue Widow is an colorful marijuana plant with an intoxicating flavor. It’s chronic weed that tastes great right down to the ashes. This 50% indica, 50% sativa strain is so good that there’s a local on the Big Island with the nickname Mr. Blueberry Widow
🌱 Plants grow short and bushy but given enough light can structure out large. Blue Widow is great for guerilla growing plants in the bushes, or indoor grow rooms and greenhouses.
⚖️ Buds are fruity and skunky, possessing that distinct strong musty/pine widow smell combined with a blueberry fruitiness. Blue Widow forms up dense and looks amazing. Thick, juicy and potent.
💦 A fairly mold resistant strain when grown with care. Even faced with the high humidity of Hawaii, Blue Widow buds hold up against Botrytis mold and powdery mildew.
👍 Color changes happen during the end of flowering. Enjoy the brilliant purple, red, yellow and neon green colors of Blue Widow.
Blue Widow does well grown from seed outdoors and indoors, having earned a spot in many medical marijuana gardens in Hawaii and across the US. More stoney than some may prefer, Blue Widow’s combination of sativa and indica effects may leave users feeling confused. The high potency, strong aroma and sugar coated THC glaze makes this strain a winner. Excellent bag appeal.
|Genetics||Blueberry x White Widow|
|Flowering Time||7-8 weeks|
|Pack Size||1/3/5/10 seeds|
|Yield||Indoors: 525 g/m2;
Outdoors: up to 1100 g/plant
Buy Blue Widow Seeds🌱
Early Pearl | Sensi Seeds
Early Pearl is an old classic variety from The Seed Bank catalogs. Early Pearl buds are light-green in color, extremely pungent, fat and dank. The Early Pearl strain has been mass-produced by outdoor growers for decades. People tend to call it whatever they want, meaning you may already know this strain under a different name. Early Pearl is a 75% sativa that grows like an indica.
🌱 Grows quick, developing into a short, stout plant that performs well outdoors, indoors, in grow tents and in greenhouses.
⚖️ Buds are skunky, pungent and have great bag appeal. Tasting Early Pearl buds is like a skunk spraying right in your mouth. Good high yields.
💦 One of the first strains to be noted as an “early mold resistant variety”.
👍 Its fast flowering time works great for quick cycling of seeds and clones.
I gave a stoner celebrity a bag of mixed buds that included Early Pearl, Purple Kush and a few other top breeds. He only wanted the Early Pearl, giving the rest to friends. Stoners looking for stinky, dank, cat piss marijuana will be pleased with Early Pearl.
|Genetics||Originated from the West Coast|
|Flowering Time||60 days|
|Pack Size||10 seeds|
|Yield||Slightly above average|
Buy Early Pearl Seeds🌱
*Bonus: Mendo Purple Kush
Mendo Purps is an award-winning indica that has proved to be a reliable seed strain for both outdoor and indoor growers. Coming straight from California’s Humboldt County, it represents some of the best purple weed on the West Coast. Combined with Purple Kush, a legend in itself, the Mendo Purple Kush hybrid is a producer of premium quality purple cannabis.
🌱 Plants grow bushy with large leaves in a typical indica fashion, up to 7 feet tall. Each phenotype shows uniques color qualites from green to purple to intense violet.
⚖️ Buds have a beautiful dark appearance and fruity grape flavor. Mendo Purple Kush has top shelf bag appeal. Yields are high.
💦 Mold resistant strain in most climates, be careful of rain on these indica buds.
👍 Breeds strong hybrids and clones easily, cuttings root fast in aero cloners.
Mendo Purple Kush is a great all around strain that grows like other kush strains. These indica varieties flower a little longer than hash plant indicas, but it is paid back in heavy, top grade harvests.
|Genetics||Mendo Purps x Purple Kush|
|Flowering Time||8-9 weeks|
|Pack Size||3/5/10 seeds|
|Yield||Indoors: 450 g/m2;
Outdoors: 600 g/plant
Buy Mendo Purple Kush Seeds🌱
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Topics include: Organic and non-organic methods of cultivation, indoor and outdoor growing, strain breeding, reviews. Sativa and indica. Landrace and IBL. Feminized, regular and autoflowering seeds. Good strains for the outdoors, mold resistant strains, powdery mildew resistant strains, outdoor strains. Bud trimmers, weed fertilizers, cool grinders, aero cloners, gram scales, as well as grow tips, tricks and other cannabis niche content.
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Sativa and indica. Landrace and IBL. Feminized, regular and autoflowering seeds. Good strains for the outdoors, mold resistant strains, powdery mildew resistant strains, outdoor and indoor strains.