powdery mildew resistant strains

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

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.

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 .

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!

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

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.

Malawi Gold

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.


The 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.

Colombian Gold

Colombian 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.

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

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.

Jamaican Pearl

Jamaican 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.

Bangi Haze

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.

Holland’s Hope

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.

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.

Most mold resistant cannabis strains list. Growing cannabis in wet humid climates is a challenge without some good mold resistant strains.