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Q&A Home

Kelly from Abilene, Texas writes,

What's the dilution rate of Fertilome Tree and Shrub Systemic Insect Drench?

What dilution rate do you recommend for large pecan trees in Texas for aphid sap control? When is the best time to apply for prevention?


Unfortunately, Fertilome Tree and Shrub Systemic Insect Drench wouldn't be the best choice because it's not labeled for Aphids and therefore wouldn't help get rid of the aphid sap.

We would recommend something like Bayer Advanced 12 Month Tree & Shrub Insect Control Landscape Formula. It is safe to use on Pecan Trees for Aphid control. You would apply 1/2 oz per inch of distance around trunk so what you need to do is measure the distance, in inches, around the trunk at chest height and multiply the total by .5 for the amount of ounces required for the application. For 2 or more trunks (at chest height) take the total of the measured trunks and multiply the total by .375, the total of that is the amount in ounces needed. You can use the total ounces to a gallon of water or if the total inches of 2 or more trunks were more than 50" then you need to use 2 gallons of water. You can use a bucket or watering can and slowly pour the finished solution around the trunk/main stem of the tree as possible for best results. The best time for application is before the problem starts which is preferably in the fall but it can be applied at any time as long as the ground is not waterlogged or frozen. It is only meant to be applied once a year.

Answer last updated on: 04/03/2015

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