Hi and welcome to UK Fungi.
The wording of your post suggests that you may reside outside the UK, (America?), and that you have tried or intended to include photos?
If you are having difficulty in that regard, all the information you would need can be found here: –
How to upload images & add them to your posts (Basic Method): – https://www.fungi.org.uk/viewtopic.php?t=1942
As to your query: –
No, Blushing Rosette, (if you are meaning the species Abortiporus biennis), will not harm healthy living trees.
The species is saprobic/saprotrophic, meaning that it obtains its nutrients only from dead or dying wood.
(Saprobes are generally known as “wood rotters” as they are the primary means in which dead wood decays).
This Royal Horticultural Society article provides more information: –
https://www.rhs.org.uk/biodiversity/saprotrophic-fungi
Regards,
Mike.