Richard from Darien, Ct writes
Fung-onil Multi Purpose Fungicide Concentrate is for diseases only not insects so would not be used for wooly adelgids. Dominion 2L will be most effective when applied as a soil drench for pests such as wooly adelgids. If you have branches that are very badly infested, then you may want to trim these branches rather than trying to control a heavy population there. If you would like to use a product that will have a faster topical kill for existing adult adelgids, then you could use a pyrethroid insecticide such as Talstar P.
When using Dominion 2L as a soil drench for Hemlock Woolly Adelgids you should use 0.2 fl. oz. (3 to 6 mL) of Dominion 2L per inch of trunk diameter (D.B.H.) diluted in 1 pint - 1 gallon of water per inch of trunk diameter. The amount of water that is used will vary depending on soil conditions and volumes that are easy for applicators to use. The minimum amount of water that should be used is 1 pint per inch of trunk diameter but you may use 1 quart -1 gallon of water per inch of trunk diameter. Denser soils such as clay do not accept water as readily, so the lower volume of water is suggested. Since sandy soils can accept more water, using the higher volume of water is preferred. After the soil drench has been applied you should water it in with at east 1/2 inch of water. Note: Water simply acts as a carrier and it is important that even distribution of the product is achieved.
Answer last updated on: 03/23/2020