Globe Willow Trees, my leaves are wilting after insecticide

[Bobby1969]

I planted a new young Navajo Globe Willow tree on May 1, 2008 in Winslow, AZ. It immediately was healthy and began to grow perfectly.

I started noticing aphids on the leaves at the end of July. On August 18, I sprayed Ortho Bug-B-Gon Insect Killer on the tree using my garden hose and an Ortho dial sprayer set at 1.5 oz like the directions indicated. I filled the dial sprayer 1/2 full (the options on the directions were to fill it 1/2 full or completely full). I followed all the directions and I sprayed all the leaves very thoroughly. When I was done there was plenty of insecticide left over which I poured back into the original container.

About 10 hours later I noticed the aphids dying (they were turning black). The next day, the leaves started wilting and turning brittle. Now all the leaves are wilted and crumble to the touch. The rest of the tree still appears healthy and I spray the leaves down daily with water from my garden hose. Have I permanently harmed the tree? Or will these leaves fall off and be replaced by new healthy ones? None of the leaves have fallen off yet but I think it's just a matter of time.

Any suggestions are appreciated. Thanks
Bobby

 

[jefflovstrom]

Wow- willows in Winslow--I would get an analyisis to see if it is a blight. The poplars and willows are getting hit hard.
Jeff

 

[S Mc]

August 18 in Arizona...How hot was it that day? The label warns about using the spray if the temperature is expected to exceed 85 deg F.

I would suspect that the sticking agent (inactive ingredient) may be a dessicant. It is possible this simply "burned" the leaves on the tree. It should come back. (I am assuming the tree itself still has life in its limbs.)

Pictures would be helpful to be more accurate in our advice.

Sylvia