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Top 5 Mold-Resistant Cannabis Strains
What's worse than the sight of an empty stash jar? Moldy buds! When indoor growing spaces get too humid, or persistent rain continuously soaks plants outdoors, fungal diseases strike. They look like fluff to the naked eye, but you certainly shouldn't smoke moldy buds. To avoid such disappointment, you need to select disease-resistant strains.
You can correct overwatering and nutrient deficiencies, and even remove some pests by hand. But fungal pathogens present a much more serious problem. Mold remains invisible in the early stages. By the time it makes an appearance, your flowers are likely overrun with spores that you don’t want getting into your lungs. There are several ways to defend against such diseases when growing weed—including opting for disease-resistant genetics.
Several traditional strains have gained recognition for their ability to stave off plant pathogens. However, the advent of F1 hybrid cannabis genetics has given growers the most powerful weapon yet in the war against mold. These cannabis varieties are created by crossing two inbred parent lines. This intensive process creates uniform offspring that are better equipped to deal with an array of pests and diseases, including the dreaded Botrytis. On top of this, they also provide larger yields and more cannabinoids.
At Royal Queen Seeds, our breeders were the first in the world to develop these powerhouse genetics. Below, you’ll discover three F1 varieties that possess profound disease and mold resistance, alongside a couple of traditional strains that demonstrate respectable resistance themselves.
1. Hyperion F1 Hybrid Cannabis Seeds
The mighty Hyperion F1 gets her name from a Titan of Greek mythology. Much like these fabled beings, this F1 hybrid cannabis cultivar also puts up a heck of a fight. Equipped with hybrid vigour, this variety boasts impressive resistance to myriad sources of stress, including drought, cold bouts, pests, and virulent diseases.
Hyperion F0 ozenetics descend from Amnesia, Lemon, and Sin Tra Bajo inbred lines. After creating this cultivar, our breeders conducted several trials and found that she demonstrates impressive resistance to Botrytis—a systemic mold infection capable of wiping out entire cannabis harvests.
If you’ve ever lost a yield to fungal pathogens, or live in a humid climate where the risk remains high, Hyperion F1 will vastly increase your chances of success. Adding to this, this tall autoflowering variety produces large harvests and provides a high that relaxes the body while enlightening the mind. A rich terpene profile comprising myrcene, ocimene, farnesene, and other volatile compounds delivers enticing flavors of fruit and pepper.
Hyperion F1
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Amnesia x Lemon x Sin Tra Bajo Automatic |
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50 - 55 days |
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THC: Very high |
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Laughter, Motivating , Physically Relaxing, Sleepy |
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80 - 85 days after sprouting |
2. Apollo F1 Hybrid Cannabis Seeds
In the Greek pantheon, Apollo stood as the god of many things—including plague. Ironically, Apollo F1 possesses superior resistance to disease, which makes it an attractive choice for all manner of growers. Nothing makes the heart sink more than spotting mold on your buds at the end of a long and effortful growing cycle. As a true F1 hybrid, Apollo F1 makes this devastating sight very unlikely.
Our breeders created this vigorous autoflowering variety by first developing pure inbred lines descending from Lemon, Black Domina, and Sugar Magnolia genetics. After crafting highly stable parent lines, our breeders crossed them to create one of the first true F1 hybrids, equipped with sky-high THC levels, delicious terpenes, and excellent uniformity.
After hitting a bowl or blunt packed with these buds, you’ll enjoy a deeply relaxing high, bouts of euphoria, and tastes of fruit and citrus. Her vigorous genetics serve to shield her against an array of pathogens. You’ll have no problem growing this cultivar outdoors, even in the rainiest climates.
Apollo F1
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Lemon x Black Domina x Sugar Magnolia |
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45 - 50 days |
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THC: Very high |
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Calming, Creative, Motivating , Physically Relaxing |
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75 - 80 days after sprouting |
3. Power Flower
Power Flower is derived from original South African dagga genetics and is renowned for her social, buzzy, and talkative high, despite her indica dominance. She is the result of crossbreeding parent strains Original Power Plant and White Widow, a pairing that passed on powerful mold-fighting qualities.
Smoking a bowl or joint loaded with this strain with leave a pleasant taste of pine on the taste buds. Power Flower is recognized as a competitive cash crop due to her fast flowering times and massive buds that form an enormous towering cola when left untopped.
Power Flower performs well in grow rooms and tents, and outdoors within garden beds and pots. She grows to a stealthy height of 2.6 – 3.9 feet, making her very easy to conceal and cultivate in small spaces. For her small size, she puts out an impressive yield of 17.6 – 19.4 oz/m², ready for plucking after a flowering time of 8-9 weeks.
Power Flower
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South African Sativas |
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18 to 19 oz/m² |
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3 to 4 feet |
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9 - 10 weeks |
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THC: 19% |
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Sativa 88% Indica 12% |
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18 to 19 oz/plant |
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5 to 7 feet |
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October |
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Heavy |
4. Orion F1 Hybrid Cannabis Seeds
Just as eye-catching as the constellation that sits on the celestial equator, Orion F1 shines bright in a market filled with traditional genetics. This autoflowering variety charges from seed to harvest in a matter of weeks, and her impressive disease resistance means you’ll cross the finish line with no mold in sight.
This tough cookie inherited her hybrid vigour from pure inbred parent lines that stem from Blue Mammoth Auto, Blue Dream, and Amnesia. Together, these gene pools passed down large quantities of THC and a complex mix of terpenes, including myrcene, ocimene, and farnesene. On top of this, Orion F1 also offers small levels of CBG.
Whether you’re growing this variety in a rainy and humid region, or simply want to do everything to protect your flowers during bloom, you can rest assured that these buds are very unlikely to succumb to virulent pathogens intent on infecting cannabis inflorescences.
Orion F1
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Blue Mammoth Auto x Blue Dream x Amnesia |
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35 - 40 days |
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THC: Very high |
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Calming, Physically Relaxing, Stoned |
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65 - 70 days after germination |
5. Northern Light
Northern Light is a well-known name within the cannabis world, a strain famous for her indica purity and intense high. A huge bonus to growing this strain is her high resistance to mold, a trait that can put growers at ease during the flowering stage, knowing that she is quite capable of withstanding this threat.
Northern Light produces a high level of THC alongside a medium level of CBD, making her high stoning, relaxing, and euphoric. These qualities make her an ideal smoke for the evening hours when unwinding after a day of work. Each toke of this strain is accompanied by flavors of sweetness, fruit, and spices.
Indoor plants grow to heights of 3.3 – 5.2 feet and put out yields of around 17.6 – 19.4 oz/m². Outdoor plants grow taller to heights of 5.9 – 7.2 feet, producing good yields of up to 22 oz per plant. Northern Light has a flowering time of 7–8 weeks, and outdoor plants will be ready for the axe in late September.
Northern Light
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Northern Light S1 |
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18 to 19 oz/m² |
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3 to 5 feet |
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8 - 9 weeks |
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THC: 18% |
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Sativa 0% Indica 100% |
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20 to 22 oz/plant |
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6 to 7 feet |
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Late September |
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Balanced, Clear, Stoned |
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