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Larry from Rifle, Co writes,

Can Fertilome Tree and Shrub Systemic Insect Drench be applied as a foliar spray?

I spoke with a local owner of an aspen tree nursery. He sprays this product on his young aspen trees 3 times per year when the twiggal fly is active.


Fertilome Tree and Shrub Systemic Insect Drench is only labeled to be used a soil drench around the base of the tree and not as a foliar spray.  A soil drench will actually provide a longer residual as it will soak into the plants inner system and last for typically an entire growing season up to 1 year. Foliar application are only somewhat systemic with products labeled to do so but would need to be reapplied after the weather wears away at it on the surface.

Answer last updated on: 03/27/2015

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