When growing marijuana, choosing the right strain can save a lot of hassle. Here we look at some of the most mold resistant options available. 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 List of products tagged as Mold resistant in the Alchimia Grow catalogue.
Mold Resistant Marijuana Strains [Top 5 Picks]
New and experienced marijuana growers alike will understand how frustrating mold is when cultivating cannabis. You put a lot of time and effort into your crops, only to find them decimated by mold. And there’s simply nothing you can do about it! Once your crop goes moldy, it is unfortunately lost.
Mold, or bud rot, can be heartbreaking for growers. It can spread throughout your entire crop in just a few days, sometimes before you have noticed the beginnings.
Mold is common both indoors and outdoors. It typically occurs in hot, humid climates. Humidity can prevent the evaporation of water, which is what leads to mold. Therefore, mold can occur outdoors in a humid climate or in greenhouses with poor ventilation and air circulation.
However, mold growth is avoidable in many situations. But if you’re growing strains that prefer a humid environment, then you sometimes need to exercise caution. For novice growers, you might want to try strains that are naturally resistant to molds.
Cannabis strains with a high resin production can be mold-resistant, removing the need for you to worry about spores damaging your growth. Below, we check out five of the best naturally mold-resistant strains. If you’re a cultivator looking to get rid of the risk of mold in your crop, then read on!
EDITOR’S CHOICE – Homegrown CannabisCo
Homegrown CannabisCo are the masters when it comes to seeds. Offering a massive variety of cannabis seeds that are well categorized, not only does this company create a resource for superb quality options including feminized seeds, it also provides extensive growing information for those looking for some support along their journey.
#1 – Super Silver Haze
- Flowering Time: 9-11 weeks
- Effects: Body high, relaxation, energy
- Grows Best: Indoors
Super Silver Haze is a well-known, sativa-dominant strain that produces a glittering layer of trichomes. The plant’s high resin production is likely what makes it so mold-resistant, which is excellent news for inexperienced growers.
This strain has a sage-like, skunky aroma inherited from its lineage, which features other famed strains like Haze and Skunk No. 1. The strain’s sativa elements deliver a burst of energy while the 30% indica genetics provide a relaxing body high.
In terms of growing, Super Silver Haze prefers a hot, equatorial climate. However, many users prefer to grow it indoors. A hydroponics set-up serves this strain well, but note that it may also decrease the flowering time.
Typically, Super Silver Haze is ready for harvest in 9-11 weeks. The later you harvest, the more resinous trichomes you get. Indoor harvests will provide you with a higher yield of about 19 ounces of bud per square meter. Outdoor crops may produce around 15 ounces per plant in the same space.
#2 – Power Plant
- Flowering Time: 8 weeks
- Effects: Energy, social, increases appetite
- Grows Best: Outdoors
If you’re looking for a quicker turnaround than Super Silver Haze, look no further than Power Plant. This epic strain is a powerhouse, packing 15%-20% THC and up to 2%.
Famed cannabis breeders, Dutch Passion Seed Company, bred this strain from South African genetics. It has been around for some time, released in 1997. It continues to impress, even taking home first prize in the Sativa category at the 2016 Life Expo in Vancouver.
Power Plant has a spicy, woody taste, but its smell isn’t particularly pungent. This combination makes it a pleasant strain to enjoy. It’s also an excellent choice for growers, thanks to its mold-resistant qualities. Its enormous yield and quick flowering time are added bonuses.
You can grow Power Plant both indoors and outdoors, and there are advantages to each method. Indoors, the plants are ready to harvest between 7-9 weeks.
Outdoors, you have to wait for the right growing season; your plants will flower in the middle of October. However, the outdoor yield is far greater.
Indoors, you can anticipate a yield of 21 ounces per square meter. Outdoors, you may receive a whopping 35 ounces!
Either way, Power Plant is easy to grow because it flourishes in standard soil. It’s a consistent strain that’s a real treat for cultivators, thanks to its simple growth and high reward.
#3 – Stress Killer Automatic
- Flowering Time: 11 weeks
- Effects: Stress-relief, clear-headedness
- Grows Best: Outdoors
With a parentage of Lemon Haze and Juanita La Lagrimosa, Stress Killer Automatic is a citrusy, lemon-filled strain. It’s a delicious and tangy strain that offers beautiful effects thanks to its balanced cannabinoid content.
As you can guess from the name, Stress Killer Automatic MMJ users consume it to address chronic stress. The THC content is 11%, which is relatively low compared to many other strains. Reportedly, this strain contains a very high CBD content of between 11-16%.
Whether you grow indoors or outdoors, Stress Killer Automatic takes around 11 weeks to flower. It’s not too difficult to grow and doesn’t require a great deal of skill. Nevertheless, you should tend carefully to your buds just as you would any other strain. You can grow Stress Killer Automatic outdoors if you live in a warm, sunny climate.
Although Stress Killer Automatic flourishes both indoors and out, you will receive a higher yield outdoors. This strain provides about 4 ounces per square meter indoors, while the outdoor return is 6 ounces per plant.
#4 – Durban Poison
- Flowering Time: 9 weeks
- Effects: Energy, spacy, uplifting
- Grows Best: Outdoors
Durban Poison is a famous cannabis strain, which is 100% sativa. As a result, you can expect the typical mind-focused, energizing, positive effects that any good sativa brings about.
This strain’s taste is delicious, combining sweet notes of vanilla with a tang of orange citrus and a hint of spice. Even the smoke is creamy.
Durban Poison grows exceptionally well, producing a thick coating of trichomes that create lots of sticky resin. Cannabis consumers thinking about growing Durban Poison should note that its THC level can be as high as 26%.
The buds are enormous, so you probably shouldn’t attempt to grow Durban Poison if you are trying to be discreet.
This strain is pretty resilient to weather conditions and mold; therefore, you can grow it both indoors and outdoors. As a sativa, Durban Poison can grow to lofty heights; it can reach a wobbly seven feet! Unless you have a tall greenhouse with enough space, then outdoors may be the best option for this strain.
Furthermore, it produces more buds outdoors. It generally yields 16-ounces per plant when grown outdoors and 13 ounces per meter squared indoors.
There are a few handy tips for growing Durban Poison, such as adding human urine during the vegetative stage. Yes, you read that right! A mixture of urine and water can fertilize the soil well, leading to a healthy plant and high yields.
#5 – Moby Dick
- Flowering Time: 9-10 weeks
- Effects: Energy, relaxation, uplifting
- Grows Best: Outdoors
This whale of a strain can knock you off your feet if you’re not careful! Moby Dick can pack up to 27% THC, with a CBD content of as little as 1%. As a result, Moby Dick’s dizzying, euphoric effects can be overwhelming for some.
To grow the Moby Dick strain successfully, you will need some experience as its growth difficulty is classified as moderate. You will need to trim the plant regularly to keep its height and shape under control.
As a 75% sativa, it grows better outdoors because it can become quite tall. Outdoor plants also thrive in sunny, Mediterranean climates.
This strain has a relatively short indoor flowering time of 9-10 weeks. Grown outdoors, it will bloom in late October or early November.
The good news is that Moby Dick provides a mammoth yield outdoors and a generous return indoors. Generally, Durban Poison plants yield around 23 ounces per square meter indoors. However, outdoor crops can provide you with an enormous bountiful yield of up to 53 ounces per plant.
Moby Dick is a great strain to try your hand at growing if you want a little more of a challenge. Although it’s resistant to mold, you will need to practice topping to get the best out of your plants. If you get this right, the reward is worth it.
Final Thoughts on Mold-Resistant Cannabis Strains
Mold is the bane of many marijuana growers’ existence. Rather than letting it get you down, you can make your life a little easier by buying mold-resistant strains. The strains in this list are just five of the best picks for mold-resistant cannabis. There are plenty of other options out there.
Although the majority we mentioned here grow better or offer higher yields outdoors, you can grow all of them indoors and out. For sativas like Durban Poison, though, you’ll need to have a large space and practice plenty of topping.
Hopefully, you’ll have some fun growing these strains. If you’ve tried it, let us know how you found the process in the comments!
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:
– Easy to grow, mold-resistant, 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!
-This strain is a personal favorite. 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
strain is resistant to mold and poor environmental conditions. This one survived heat and high humidity to produce great yields with strong bud effects.
Other popular indoor mold-resistant strains:
by Bomb Seeds by Royal Queen Seeds by Seed Supreme by Sweet Seeds by Barney’s Farm by Reserva Privada
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:
– A G13 Labs strain that is resistant to mold and produces beautiful bud quality.
– 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.
– 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
– This citrus sour-smelling strain grows well outdoors, and is not only mold resistant but produces good yields, too.
Other popular outdoor mold-resistant strains:
by Seed Supreme by Greenhouse Seed Co. by Humboldt Seed Co. by Heavyweight Seeds by G13 Labs by G13 Labs by Ace Seeds
Mold-Resistant Auto-Flowering Strains
The following auto-flowering strains are specifically listed as being mold-resistant. Learn more about autoflowering strains (auto-flowering plants automatically go from germination to harvest in 2-3 months).
by Nirvana by G13 Labs by Barney’s Farm by Barney’s Farm Extra potent auto-flowering strain! by Seedsman by Barney’s Farm by Pyramid Seeds by Barney’s Farm
Purple Punch Auto by Barney’s Farm performs well outdoors and produces beautiful purple buds
Mold resistant cannabis strains
This resistance depends on several factors (bud density, environmental conditions, etc.) and specially on the selection of the parents used to produce the seeds, since this resistance is often genetically transmitted to the offspring.
Cannabis strains for wet climates
Mold resistant cannabis strains are the best option for growers in humid climates (northern Europe, Canada, etc.), either indoors or outdoors.
We present here a list of genetics from different seed companies with high resistance to molds and thus suitable for wet climates.
There are 270 products tagged as Mold resistant
Green Haze 19 A5 – Ace Seeds
Alchimiaweb are proud to offer feinised seeds of Green Haze 19 A5 from ACE Seeds, a limited edition cannabis hybrid of the best Green Haze combined with the legendary A5 Haze, resulting in an elegant and vigorous, predominantly-sativa hybrid of the h [. ]
- 5 seeds 80.00€
Purple Haze 23 A5 – Ace Seeds
Alchimiaweb are happy to present Purple Haze 23 A5 from ACE Seeds, a limited edition feminised cannabis hybrid of the best Purple Haze combined with the legendary A5 Haze, resulting in a vigorous, highly-perfumed incense Haze hybrid of the highest qu [. ]
- 5 seeds 80.00€
Mandarin Panties, Humboldt Line – Seed Stockers
Alchimia is delighted to present Mandarin Panties by Humboldt, a Limited Edition strain, within their Humboldt line, that is currently only available in our feminised cannabis seeds catalogue. You certainly should not miss this opportunity. Mandarin [. ]
- 3 seeds 44.90€
Mandarin Panties Auto, Humboldt Line – Seed Stockers
Alchimia is glad to present Mandarin Panties Auto, a variety of US genetics in Limited Edition by Humboldt, Seedstockers and Alchimia. An easy to cultivate plant that offers a strong tangerine citric terpene. It is certainly a great candidate to be a [. ]
- 3 seeds
Nepal Jam x Kali China Fem – Ace Seeds
Alchimiaweb presents feminised seeds of Nepal Jam x Kali China, a complex and complete Sativa-dominant F1 hybrid that brings together two of the most popular hybrids in the ACE Seeds catalogue with astonishingly high-quality results. Now available in [. ]
- 3 seeds 31.00€
- 5 seeds 50.00€
Panama x PCK Fem – Ace Seeds
Alchimiaweb presents feminised seeds of Panama x PCK, an exciting hybrid combining two classic landrace cannabis varieties from the ACE Seeds catalogue. It’s a fast-flowering and fruity-flavoured 50/50 Indica-Sativa cross that gives visually spectacu [. ]
- 3 seeds 31.00€
- 5 seeds 50.00€
Strawberry Haze Auto – Kannabia
Alchimia is happy to present Strawberry Haze Auto by Kannabia Seed Company, a Sativa dominant auto-flowering plant of great vigour. It is particularly notable for its resistance to pests and humidity, with excellent performance both indoors and outdo [. ]
- 1 seed 8.50€
- 3 seeds 22.00€
- 5 seeds 29.00€
- 10 seeds 55.00€
Early Gorilla – Philosopher Seeds
We are happy to present Early Gorilla by Philosopher Seeds, the Gorilla Glue #4 version of this seed bank, a much appreciated variety for its high resin production and for its strong and relaxing effect. It is now available in our feminised cannabis [. ]
- 1 seed (Product sold out) 8.50€
- 3 seeds (Product sold out) 23.00€
- 5 seeds (Product sold out) 36.00€
- 25 seeds (Product sold out) 150.00€
Moby Delicious – Delicious Seeds
Delicious Seeds is glad to present here Moby Delicious, a cross between the famous predominantly Sativa Moby Dick and one of its descendants, Royal Moby. This strain, with even higher quality, is now available in our feminised cannabis seeds catalogu [. ]
- 3 seeds 34.00€
- 5 seeds 54.00€
Vanilla Sundae x London Pound Cake x Kushmints – T.H.Seeds
Alchimia are pleased to present limited edition seeds of Vanilla Sundae x London Pound Cake x Kushmints from TH Seeds. This hybrid is highly resistant to pests and fungi and offers a surprising and complex terpene profile that will have you coming ba [. ]
- 11 seeds 150.00€
Watermelon x London Pound Cake x Kushmints – T.H.Seeds
New from TH Seeds: limited edition regular seeds of Watermelon x London Pound Cake x Kushmints, a unique and highly resistant cannabis hybrid with an outstanding blend of flavours. Now available as part of our online seed catalogue at Alchimiaweb. W [. ]
- 11 seeds 150.00€
Grandpa’s Stash – Ethos Genetics
Alchimia is glad to present Grandpa’s Stash by Ethos Genetics, the perfect strain for enthusiasts of new Old School crosses. It is a plant easy to cultivate, vigorous and with a strong earthy and pine petrol aroma. Now available in our feminised cann [. ]
- 5 seeds (Product sold out) 60.00€
- 10 seeds (Product sold out) 100.00€
Banana Candy Krush – T.H.Seeds
Alchimia is delighted to present Banana Candy Krush by TH Seeds, a hybrid with a slight Sativa influence. It has a flowering period of about 8-9 weeks, with a harvest of appetising buds with a unique terpenes concentration. A strain now available in [. ]
- 5+2 seeds and 1 French Macaron seed 65.00€
Eleven Roses Auto – Delicious Seeds
Delicious Seed presents here Eleven Rose Auto, this is the auto-flowering version of its best-selling variety since 2017. A high quality, productive and powerful plant with a very fast complete cycle. A variety now available in our auto-flowering can [. ]
- 1 seed 11.00€
- 3 seeds 30.00€
- 5 seeds 46.00€
- 10 seeds 85.00€
BubbleBananaGum 710 Special Pack – T.H.Seeds
TH Seeds presents here BubbleBananaGum, a genetic that has it all, easy cultivation, resistance and solid and efficient structure. It offers harvests full of resin with sweetish flavour, with a relaxing and positive effect. It is now available in our [. ]
- 5+2 seeds and 1 French Macaron seed 60.00€
Mauritius x Ethiopian Standard – Ace Seeds
Alchimia is delighted to present Mauritius x Ethiopian Standard, a regular cannabis strain in limited edition by Ace Seeds Bank, a group of cannabis breeders and lovers committed to the preservation and study of this wonderful plant. Here we feature [. ]