The application rate of Fung-onil Multi Purpose Fungicide Concentrate on Colorado Blue Spruce depends on what you are treating for. Please review the product label for the best application rate for the disease you are treating.
When applying Fung-onil Multi Purpose Fungicide Concentrate, be sure to cover thoroughly all parts of the tree/plant. Repeat applications at 7 to 14 day intervals until conditions are no longer favorable for disease.
Per the product label on Fung-onil Multi Purpose, you want to avoid spraying plants during extremely hot and sunny weather so that you avoid damage or burn to the plants you are treating.
It sounds like you are referring to fruit trees. Per the product label for Fung-onil Multi Purpose Fungicide Concentrate: "Apply at shuck split to prevent infections on young fruit. If additional disease control is needed after shuck split and before harvest, use another registered fungicide." You could use an organic fungicide such as Triple Action up to day of harvest.
Fung-onil Multi Purpose Fungicide Concentrate works best when applied in the cooler times of the day. It could be that the tomato plants are discolored due to burning. There's no pre harvest interval for tomatoes. So basically you want to wash as normal prior to eating.
Fung-onil Multi Purpose Fungicide Concentrate has no pre-harvest interval. It can be applied up until day of harvest. See the product label for complete application instructions.
Fung-onil Multi Purpose Fungicide Concentrate is labeled for use on blueberry plants; however, the pre-harvest interval is 42 days.
Fung-onil Multi Purpose Fungicide Concentrate has no pre-harvest interval. It can be applied up until day of harvest. We would recommend washing the peppers off thoroughly before eating.