Downy Mildew Identification Pocket Loupe

Spot early signs of downy mildew with this 15X folding loupe. Designed for growers, inspectors, and horticultural training in humid environments.

Downy mildew can spread quickly in greenhouse or garden center environments, where high humidity and plant density create ideal conditions for outbreaks. This 15X folding magnifier allows staff, growers, or inspectors to closely examine leaf undersides for the characteristic downy growth, helping distinguish it from nutrient stress or other foliar issues. It's ideal for routine monitoring, quarantine checks, or inclusion in training programs for horticultural staff.

Downy mildews infect the leaves, stems, flowers and fruits of a diverse range of plants. They are single & multi-celled eukaryotic protists whose photosynthetic organelles contain chlorophyll c. Infection by downy mildew disease can also promote the growth of E. coli O157:H7 & Salmonella enterica on lettuce, enteric bacteria that are both known human pathogens

Downy mildew symptoms start as pale-yellow to light green patches on upper leaf surfaces or as irregular, angular lesions. These translucent spots can eventually spread to the an entire leaf, stem, flower or fruit as a downy, gray-white fuzz. This can go unnoticed until severely infected leaves turn brown, shrivel, and drop. Close examination is necessary to confirm the cause as downy mildew.

Small berries & wine grape varietals include Cabernet Franc, Cabernet Souvignon, Catawba, Chancellor, Chardonnay, Delaware, Fredonia, Gewurztraminer, Ives, Merlot, Niagara, Pinot Blanc, Pinot Noir, Riesling, Rougeon and Sauvignon Blanc. All are reported to be highly susceptible to downy mildew. There is no simple solution for Downy Mildew Control of infected plants.