Snow mold can be an unsightly welcome to the spring season. There are two types of snow mold: gray (Typhula incarnata) and pink (Microdochium nivale). Pink snow mold can develop at any time of the year when conditions are cool and damp, while gray snow mold needs an extended snow cover to develop. Gray snow mold attacks the blades of grass, whereas pink snow mold is more aggressive, attacking the crown and roots. As we all get ready to prep our properties for fall, consider testing your soil, fertilizing, following cultural practices, and using plant protectants to help prevent snow mold.
The first step is understanding what your plant needs are by conducting a soil test prior to fall applications. Soil Solver tests are a great x-ray for your soils and give you a better understanding of your fertility needs. This will also allow you to maximize your budget by only putting down what you need.
Once your testing is done, your objectives are clear. You can systemically attack your deficiencies with granular applications to replenish your soils. This is also the time to address potential pH issues. As you build up the plant’s carbohydrates going into winter, this lessens the potential for disease since carbs create a stronger plant. Make sure not to oversupply the plant with nitrogen, as this may increase your disease pressure.
Aeration, whether it be solid or hollow core, allows gases to escape and relieves compaction. This allows roots to absorb the nutrients that are available or are put down. This would also be the time to dethatch and address any drainage issues. Try to avoid any plant injury caused by scalping or lowering the height of your cut. Cleaning up leaf litter to dry up the canopy is a must, too.
Plant protectants can be as simple as drainage and proper fertilization in some instances, but there are times when fungicides are needed. A dual-action fungicide with contact and systemic qualities will give the best results throughout the winter. Some common, effective active ingredients include PCNB, chlorothalonil, fluazinam, propiconazole, and iprodione.
Each property and field may vary, so take that initial step this fall and do some testing. Snow mold can be a nuisance, but with the right preventative steps, the impact and/or amount can be lessened.
