Corrupted Songflowers buff missing ?

In Felwood, it is possible to restore Corrupted Songflowers using

https://www.wowhead.com/item=11516/cenarion-plant-salve

Is the buff given by the restored flowers not given on purpose on this server ?

https://www.wowhead.com/spell=220351...lower-serenade

That spell id is not wotlk

https://www.wowhead.com/wotlk/spell=...lower-serenade

This one sorry

Yea it has a level restriction on the realms

So, like it's a lvl 63 max buff as per the comments for people wondering