Monterey Garden Phos is a systemic fungicide formulated to penetrate plant tissues and provide long-lasting protection against a broad spectrum of fungal diseases. The active ingredient phosphorous acid works from within the plant to strengthen cell walls and boost natural defense mechanisms. Use this 1-pint concentrate on ornamental plants, bedding plants, turf, and landscape specimens to prevent and control pythium root rot, phytophthora blights, and downy mildew. It is particularly effective for managing phytophthora diseases associated with Sudden Oak Death (SOD) in susceptible oak species and mixed plantings.
Mix according to label directions and apply as a preventative spray or drench during active growing seasons. Systemic action means the fungicide moves throughout the plant for comprehensive coverage, even on new growth. Ideal for both residential gardens and commercial nursery operations seeking reliable, season-long disease suppression.