When white powder first appears on the stems or leaves of cannabis plants, it may already be too late to take action. Powdery mildew is one of the most common and most virulent cannabis plant diseases. Although fungicides and other treatments can partially combat the fungus infestation, treatments cannot always stop the spread of this fungus. Instead, it is essential to focus on ways to prevent powdery mildew on cannabis plants in the first place. Investing in prevention up front will save you money in the long run as you avoid costly fungal infestations.
Ways to Prevent Powdery Mildew on Cannabis Plants
1. Maintain appropriate temperature and humidity.
Powdery mildew thrives in temperatures between 60 and 72 degrees Fahrenheit. This also happens to be in the range that cannabis plants like best. Dialing up the heat to 74 or 75 degrees may prevent powdery mildew without impeding plant growth. Also strive to keep humidity levels below 45% to prevent the proliferation of mildew spores.
2. Promote air circulation.
One of the biggest culprits in powdery mildew infestations is overcrowding. Crowded plants raise humidity levels and shade one another. This is a perfect breeding ground for powdery mildew. Hence, increasing space between plants solves these problems and prevents spores from spreading through direct plant contact.
Air purifiers do more than circulate the air; they destroy spores and other pathogens invisible to the naked eye. An air purification system like AiroClean420 is specially formulated to prevent mildew outbreaks.
4. Avoid over-fertilization.
Over-fertilizing plants may spur growth, but new growth is more likely to be affected by powdery mildew. Scale back fertilization efforts to keep your plants safe.
5. Invest in disease resistant strains.
Certain cannabis strains are more resistant to powdery mildew than others. In general, strains with a genetic background from Southeast Asia are more fungus-resistant than alternatives. Reinforcing strains that have been successful in the past is a good way to keep your crop safe.
6. Use natural, preventative sprays.
Finally, periodically applying natural sprays may prevent powdery mildew on cannabis plants. Use a solution of potassium bicarbonate and water to prevent the proliferation of dangerous spores. Apply several times per week for best results.
A multi-faceted prevention plan is crucial to prevent powdery mildew on cannabis plants. Any good fungus prevention plan includes taking concrete action to improve air quality. Investing in an air purification system such as AiroClean420 remains the top way to cleanse your air of dangerous mildew spores. Contact us today to learn how AiroClean420 can help you prevent powdery mildew on cannabis plants.