When a conifer is that brown, it is usually well beyond revival. Sorry.

Looks like it died from too much or too little water. Can you define ”adequate water”?

tj

When it was dry I'd add water. I went ahead just now and planted it in the backyard with full sun. It was indoors for a good while and likely the lack of sun dud it. Fingers crossed it will perk up. I see a little dim green in some areas.

It's dead. End of discussion. Indoors for a "good while" is likely the cause for its demise. Only a small handful of conifers from tropical locations can be grown indoors. Junipers of any kind cannot!! It is too hot, too dry and too dark indoors. Even living Christmas trees are cautioned to be kept inside as short a time period as possible - 3-5 days.

Will my Juniper Spiral bounce back?

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no... its dead...

and they are not houseplants... that is probably the cause ... if not too mcuh water.. juniper like being completely dry in between waterings... adn thats probably not a greaty media for a tree in a pot...

id buy another.. and dig this one up .. if you do get another.. compare live roots with dead roots.. when you dig this one up... look for white growth points...

ken