Sevin Concentrate is "white to off white" according to the manufacturer's SDS.
Sevin Concentrate is labeled to target gall wasps is used as directed, and can be applied as a spot treatment on ornamental trees by spraying up to the point of run-off, making sure to cover all sides of leaves and trunk.
Liquid insecticides would be better than granules for this type of application.
The Sevin Concentrate should kill any stalk borer that comes into contact with it, that being said, its not a systemic product so its not one that will get taken up by the plant. Common stalk borer caterpillars can be difficult to manage because caterpillars that tunnel into stalks are very well protected. Cultural control for common stalk borer includes any weed management plan that limits or eliminates grasses near field margins. We do not have an effective control for borers that are inside of the stem. Per the Iowa State Extension research article on stalk borers: Plants can sometimes be saved by slicing open the stem and removing the borers by hand. Wilted plants should be considered as a source of additional borer problems and these should be removed and destroyed. The best suggestion is to keep weeds and tall grasses controlled and mowed around gardens and flowers, especially in the fall. This will help eliminate sites that are attractive to the adult moths and the young borers.
Per page 8 of the product label you would need to mix 3.0 fl. oz. of product per gallon of water and spray upper and lower leaf surfaces and between fruit clusters and on small limbs and trunks
to the point of runoff where pest appear. Repeat applications as necessary up to a total of five times per year for small fruits, but not more often than once every seven days.
We cannot find anything on the product label that mentions the 2 qt/acre application so we are unsure where that information came from.
Sevin Concentrate can be applied on plum trees. The product label does not list plum maggots. We recommend that you have the insect properly identified. Please click on the link below to receive the contact information to your local cooperative extension office.
Can you elaborate on your question please?
You will mix 1.5 fl. oz. of Sevin Concentrate with 1 gallon of water for boxelder bugs. The upper and lower leaf surfaces, small trucks and stems and twigs need to be sprayed to the point of runoff. Repeat applications may be necessary up to a total of four times a year for trees and six times per year for ornamental shurbs and flowers. Sevin Concentrate should not be sprated more than once every seven days.
If you have any additional questions, you are welcome to call us at 866-623-6917.
No, Sevin Concentrate is labeled for use on trees, ornaments and flowers. You will mix between 1.5 fl. oz. to 3.0 fl. oz. per gallon of water. This can be applied using a hand pump sprayer or a hose end sprayer.
Please let us know if you have any additional questions.