Answer: Whenever something like that happens, the best thing to do is immediately wash them off with water from the garden hose to dilute it. It may have "burned" the foliage and caused the browning. At this point I would suggest a wait and see approach, hoping that they will produce foliage to replace the damaged portions. Then eventually you could prune them back if you really have to. I am hesitant to prune them back any more than absolutely necessary as junipers do not regrow very well from older wood so you could have ugly stubs. Also, I might mention that junipers as a rule are not heavy feeders and would not need much if any fertilizing. If you do need to fertilize, as indicated by soil tests, you could use a general purpose granular or slow release granular rather than a water soluble liquid. As always, be sure to read and carefully follow the label directions.
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