A small amount of oil overspray of a product such as Hi-Yield Dormant Spray should not harm your turfgrass. We do not recommend spraying an oil like this on your turfgrass on purpose, though, since the oil could be a bit heavy for the turfgrass, especially in hot weather (over 85 degrees).
For Hemlock Wooly Adelgids we typically recommend Dominion 2L.
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. Thus, more water may be used if the applicator feels runoff will not occur and proper penetration of the root zone is achieved. Insecticides applied to the soil are taken up by the roots and trans-located throughout the tree or shrub. Root/soil drenches offer the advantage of requiring no special equipment to apply (other than a bucket or watering can). However, surface layers of organic matter, such as mulch or leaf litter, can bind the insecticide and reduce uptake. Before applying drenches, it is important to remove or pull back any mulch or dead leaves so the insecticide solution is poured directly on the mineral soil. It is also important to keep the soil around the tree or shrub moist for the next 7-10 days after applications to encourage uptake.
Hi-Yield Dormant Spray Oil is not specifically labeled for black rot on grapes. Eagle 20EW can be used to treat black rot on grapes.
The manufacturer of Hi-Yield Dormant Spray advises "applying this product in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area." You would need to reapply, if rain occured within 24 hours of applying. Please see the label for complete application instructions.
No Hi-Yield Dormant Spray is not labeled for use with a pressure washer. You should use a tank sprayer of sorts with a pump and wand to apply this to plants.
Hi-Yield Dormant Spray has a shelf life of up to 3 years as long as it's stored in a dry, cool place.
Hi-Yield Dormant Spray should be applied when temperatures are above freezing temperatures (32 degrees) for at least 24 hours without any rainfall.
Hi-Yield Dormant Spray does include pecan trees on the product label for targeting Obscure Scale.
According to the label, spray trees thoroughly with a mixture of 6 tablespoons (3 fl. oz.) in 1 gallon of water. This product may be used on fruit trees / pecan trees only during the dormant season, which occurs prior to bud swell. Applications may be repeated at intervals of 3 to 4 weeks during the dormant.
Dormant Spray Oil may be used on fruit trees only during the dormant season, which occurs prior to bud swell, it would not be applied during bloom. Applications may be repeated at intervals of 3 to 4 weeks during the dormant season.
