Sandy from Medfield, Mass writes
Disease symptoms are on the upper stem, leaves and petals. There doesn't appear to be any disease at the base of stems, questioning any root disease. I have been spraying with Mancozeb every 7-10 days or so which seems to be helping. Also, can I continue to use Mancozeb alternately with the Agri-Fos treatment.
Monterey Garden Phos Systemic Fungicide can be applied as either a foliage spray or soil drench as directed on the product label. You can rotate between fungicides to prevent resistance Foliar Spray: Apply spray to thoroughly wet all foliage. Application intervals: 14 to 21 days. Repeat as required. 2 to 4 tsp. per gallon of water. Soil Drench: Apply each 25 gallons of solution to an area of 100 sq. ft. Follow application with irrigation. Repeat as required. Limit of one application per month 1/8 tsp. per gallon of water.
Answer last updated on: 06/17/2019
