Coastal Redwood - Sudden needle browning after purchase

[CaptainFuzzy]

Hi all. Picture of the whole tree a week ago before this issue, and a photo of the needles this am for reference.

Got this stunning redwood a week ago. I foliar sprayed and kept it in dappled light/shade the last few days. Came home from the nationals and noticed a film on the needles. I foliar sprayed with a kelp fertilizer, and micronutrients the day it arrived last Wednesday. I left the day after.

Could the foliar spray cause this white film to go over the needles and shock the tree? I usually fertilize new incoming trees during the summer early fall months as a precaution, but I fear I may have shocked the tree.

I moved it to full light now that it’s cooling down here in Chicago, and it will go in my green house in three days.

Any tips on how to remove this film, and help recovery would be great.

 

[Deep Sea Diver]

Occum’s Razor might apply here. “The simplest explanation is usually the right one”.

Considering the leaves were foliar sprayed, that would be my bet as to the cause.

btw Coast Redwoods are pretty hardy. Likely best to keep this guy outside at least until the it experiences at least a mild freeze or two or three until a more severe freeze is predicted. That way it will at least get started into dormancy and accumulate a good number of chilling hours. Then toss it into the cold greenhouse for the big freezes and the rest of the winter.

We’ve three we kept out year around for five years now, wintering over barked in the garden. As we are zone 8b we only hit 14F last year, but all trees soldiered thru.

cheers
DSD sends

 

[rockm]

Bald cypress, a relative of redwood, is known to be extremely sensitive to horticultural oils. What did you spray it with?