Yes, Clearys 3336F Fungicide will need to be watered in 24-48 hours later with what would be equivalent to approximately 1/2 inch of rain.
Clearys 3336F Fungicide should be stored away from extreme temperatures and has a three year shelf life from the date of purchase. If mixed with water, it should be applied within 24 hrs of mixing for the most effectiveness.
You would use 2-4 oz. of Clearys 3336F Fungicide per 1000 sq. ft. in however much water it takes to cover that area. To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area note how much water it took you to spray that area, and that is the amount you will want to mix 2-4 oz of product with for each 1,000 sq ft area that needs to be treated
You could use a hose end sprayer to apply Clearys 3336F as long as you can properly calibrate it to spray the recommended amount of product per gallon of water, though it is not as accurate as using a pump/backpack sprayer.
Using a surfactant like Southern Ag Non Ionic Surfactant, with Clearys will help to promote the product to stick and penetrate the bark better.
Clearys 3336F Fungicide can be used for brown patch and dollar spot, and it is a Group 1 Fungicide. You will want to rotate with a fungicide in a different group for the best results. Eagle 20EW is a very popular choice and can be used for both these diseases. You can also view our Brown Patch Guide and Dollar Spot Guide for more information about how to Identify and Treat these diseases.
Clearys 3336DG Lite is not labeled to be used on roses. A better option would be the Clearys 3336F Fungicide which is labeled for black spot on roses. The rate is 12-16 fl oz/100 gallon which breaks down to approx 0.12 to 0.16 fl per gallon of water.
Clearys 3336F Fungicide should not be applied when the temperatures are above 90 degrees. If your temperatures reach 90 or above during the day, it would be best to apply in the morning or evening when temperatures are cooler.
Clearys 3336F Fungicide should be mixed 2-4 oz per gallon water for a foliar treatment for Anthracnose on the Dogwood. You may need to reapply 14 days after initial treatment. Please consult page 5 of the product label.