The Best Mold-Resistant Cannabis Strains

Mold is one of the most common challenges in Cannabis cultivation. You can’t entirely avoid it because of how Cannabis grows and the environment they need to flourish.

In general, Cannabis thrives in warm conditions, especially during its flowering period. Additionally, plants transpire to move water and nutrients from their roots to their shoots. That causes the humidity around your plants to rise.

High temperatures combined with high humidity are the perfect environment for mold growth. It’s much better to grow mold-resistant strains and seeds than to find ways to mitigate the chance of mold.

Super Lemon Haze is easily one of the most popular strains on this list, for good reason. The Sativa-dominant hybrid gained most of its popularity and earned its stripes as a Cannabis Cup winner. But the strong citrusy flavor and smell of Super Lemon Haze made it a mainstay in the market.

What makes Super Lemon Haze one of the best mold-resistant weed strains is how well it can keep mold off, thanks to its natural defenses. And as a Sativa-dominant strain, it can handle warmer, Mediterranean-like climates. But the best part; its high yield of up to 25 ounces per plant.

Choose between growing Super Lemon Haze from feminized seeds or autoflower seeds.

When it came to revolutionizing the flavor of cannabis, there was nothing quite like the change that Chocolope brought to the chocolate niche. The work of Don Morris and Aaron Yarkoni in introducing California cannabis genetics to Holland made waves in the weed capital of the world. One of their prized hybrids was Chocolope, a Sativa-dominant strain made by crossing Chocolate Thai with Cannalope Haze.

The resulting offspring not only introduced new genetics into Holland's cannabis scene but also brought with it a rich chocolate flavor. For seasoned connoisseurs, a draw from Chocolope will also have the nostalgic taste of 80s hashish, reminding you exactly when this strain took off.

Purple Kush is mainly known for its sedative yet relaxing highs. But did you know it’s also one of the best mold-resistant indica strains on the market? Outside of its heavy indica effects and high THC content, Purple Kush is also a hardy strain for growers. Some growers may find its mold resistance surprising since this indica-dominant strain tends to grow quite bushy. Its compact size can cause airflow issues in your garden, so you’ll need to do some pruning to maintain proper air circulation.

Besides being one of the best mold-resistant strains, Purple Kush is also a great pick among mold-resistant autoflower strains as it has an autoflowering variant.

Tropicana Cookies is a product of Oni Seeds Co and Harry Palms of Blood Seed Co. Harry Palms was the first to create the strain, but Oni Seeds Co. later developed the second generation. Regardless, both companies were on the right track in creating one of the most mold-resistant Cannabis strains on the market.

Tropicana Cookies combines Tangie and Girl Scout Cookies – both mold-resistant strains. In particular, GSC is known for its hardiness, which gives it a natural defense against pests like mold, bacteria, and insects.

Like GSC, Tropicana Cookies isn’t for lightweights. It packs a punch, hitting you with a strong, energizing buzz with a refreshing citrusy flavor to compliment it.

Like the bright green superhero it’s named after, this strain is known to overtake you with potent effects. The intense euphoric high will turn you into a monster of happiness. And you would radiate an energetic joy that eases into a relaxing high after the initial buzz dies down.

Besides its effects, the plants that Bruce Banner seeds make are also quite a monster. They grow over 10 feet tall outdoors (4.5 feet indoors) and are highly resistant to mold and other pests. This is why it’s an easy strain to grow, but due to its size, it’s often left for those with a bit more experience.

You can grow Bruce Banner from either feminized seeds or autoflower seeds.

Sour Diesel is a sativa-dominant hybrid that grows best in sunny, warm areas. And like the climate it thrives in, this strain will leave you all sunshine and rainbows. It will take you through the day with an energizing buzz that boosts your mood and mind.

And because it thrives in dry climates with low humidity, the odds of mold and mildew growing on your buds are slim. But that doesn’t mean there’s no chance for mold to grow. If you want to truly avoid mold and other pests, you need to keep tabs on the humidity levels in your garden.

You can grow Sour Diesel from feminized or autoflower seeds.

Afghan is one of the easiest mold-resistant strains that you can grow. Its genetics come from plants that grew in mountainous areas, making them highly resilient. That translates to their natural resistance to mold and ability to adapt to changing environments.

Besides being an easy strain to grow, Afghan is also a prized strain, but not for its landrace parent. Instead, it earned its stripes by being perfected over the years as the best strain for making hash.

Afghan comes in both feminized and autoflower seeds.

Skywalker OG is made by crossbreeding Skywalker and OG Kush. Both strains possess unique resistances.  Skywalker is resistant to mold and mildew, while OG Kush is resilient against diseases. As a result, Skywalker OG produces relatively resilient plants.

Its broad resistance to pests makes it a great strain for beginners, but the buds it yields are anything but beginner-friendly. With a THC content of up to 26%, buds from Skywalker OG will send you flying to a galaxy far, far away.

Purple Haze is a versatile strain that flourishes in indoor and outdoor growing setups. Unlike most Sativa-dominant strains, this strain doesn’t grow tall. Instead, Purple Haze produces shorter plants than most sativa strains; it’s also fairly easy to grow and recommended for many newbie growers.

Part of what makes this strain easy to grow is its high disease resistance and love for sunny and warmer climates. Those two factors make it difficult for mold and mildew to thrive around Purple Haze plants.

You can grow your own Purple Haze by buying feminized seeds in our store.

Black Widow is both potent and easy to grow. With a THC level of up to 28%, it’s no wonder it was named after a highly venomous spider. But, despite its morbid name, this strain is anything but deadly. The effects will leave you feeling relaxed and sleepy, making it hard to leave your couch.

What isn’t hard about Black Widow, though, is cultivating it. With its natural resistance to pests, molds, and mildew, it makes for an easy experience that newcomers will enjoy. This is especially true if you visit our nutrient section to get the right plant food for every growth stage.